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the mark shows major revised points. the revised points can be easily searched by copying an "" in the pdf file and specifying it in the "find what:" field. the information in this document is subject to change without notice. before using this document, please confirm that this is the latest version. not all products and/or types are available in every country. please check with an nec electronics sales representative for availability and additional information. mos integrated circuit pd 44324082, 44324092, 44324182, 44324362 36m-bit ddrii sram 2-word burst operation document no. m16780ej3v0ds00 (3rd edition) date published march 2006 ns cp(k) printed in japan data sheet 2003 description the pd44324082 is a 4,194,304-word by 8-bit, the pd44324092 is a 4,194,304-word by 9-bit, the pd44324182 is a 2,097,152-word by 18-bit and the pd44324362 is a 1,048,576-word by 36-bit synchronous double data rate static ram fabricated with advanced cmos technology using full cmos six-transistor memory cell. the pd44324082, pd44324092, pd44324182 and pd44324362 integrate unique synchronous peripheral circuitry and a burst counter. all input registers co ntrolled by an input clock pair (k and k#) are latched on the positive edge of k and k#. these products are suitable for application which require synchronous operation, high speed, low voltage, high density and wide bit configuration. these products are packaged in 165-pin plastic bga. features ? 1.8 0.1 v power supply ? 165-pin plastic bga package (13 x 15) ? hstl interface ? dll circuitry for wide output data valid window and future frequency scaling ? pipelined double data rate operation ? common data input/output bus ? two-tick burst for low ddr transaction size ? two input clocks (k and k#) for precise ddr timing at clock rising edges only ? two output clocks (c and c#) for precise flight time and clock skew matching-clock and data delivered together to receiving device ? internally self-timed write control ? clock-stop capability. normal operation is restor ed in 1,024 cycles after clock is resumed. ? user programmable impedance output ? fast clock cycle time : 3.7 ns (270 mhz), 4.0 ns (250 mhz), 5.0 ns (200 mhz) ? simple control logic for easy depth expansion ? jtag boundary scan
2 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 ordering information part number cycle clock organization core supply i/o package time frequency (word x bit) voltage interface ns mhz v pd44324082f5-e37-eq2 3.7 270 4m x 8-bit 1.8 0.1 hstl 165-pin plastic pd44324082f5-e40-eq2 4.0 250 bga (13 x 15) pd44324082f5-e50-eq2 5.0 200 pd44324092f5-e37-eq2 3.7 270 4m x 9-bit pd44324092f5-e40-eq2 4.0 250 pd44324092f5-e50-eq2 5.0 200 pd44324182f5-e37-eq2 3.7 270 2m x 18-bit pd44324182f5-e40-eq2 4.0 250 pd44324182f5-e50-eq2 5.0 200 pd44324362f5-e37-eq2 3.7 270 1m x 36-bit pd44324362f5-e40-eq2 4.0 250 pd44324362f5-e50-eq2 5.0 200 pd44324082f5-e37-eq2-a 3.7 270 4m x 8-bit pd44324082f5-e40-eq2-a 4.0 250 pd44324082f5-e50-eq2-a 5.0 200 pd44324092f5-e37-eq2-a 3.7 270 4m x 9-bit pd44324092f5-e40-eq2-a 4.0 250 pd44324092f5-e50-eq2-a 5.0 200 pd44324182f5-e37-eq2-a 3.7 270 2m x 18-bit pd44324182f5-e40-eq2-a 4.0 250 pd44324182f5-e50-eq2-a 5.0 200 pd44324362f5-e37-eq2-a 3.7 270 1m x 36-bit pd44324362f5-e40-eq2-a 4.0 250 pd44324362f5-e50-eq2-a 5.0 200 remarks 1. qdr consortium standard package size is 13 x 15 and 15 x 17. the footprint is commonly used. 2. products with -a at the end of t he part number are lead-free products.
3 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 pin configurations # indicates active low signal. 165-pin plastic bga (13 x 15) (top view) [ pd44324082f5-eq2] [ pd44324082f5-eq2-a] 1 2 3 4 5 6 7 8 9 10 11 a cq# v ss a r, w# nw1# k# nc ld# a a cq b nc nc nc a nc k nw0# a nc nc dq3 c nc nc nc v ss a a a v ss nc nc nc d nc nc nc v ss v ss v ss v ss v ss nc nc nc e nc nc dq4 v dd q v ss v ss v ss v dd q nc nc dq2 f nc nc nc v dd q v dd v ss v dd v dd q nc nc nc g nc nc dq5 v dd q v dd v ss v dd v dd q nc nc nc h dll# v ref v dd q v dd q v dd v ss v dd v dd q v dd q v ref zq j nc nc nc v dd q v dd v ss v dd v dd q nc dq1 nc k nc nc nc v dd q v dd v ss v dd v dd q nc nc nc l nc dq6 nc v dd q v ss v ss v ss v dd q nc nc dq0 m nc nc nc v ss v ss v ss v ss v ss nc nc nc n nc nc nc v ss a a a v ss nc nc nc p nc nc dq7 a a c a a nc nc nc r tdo tck a a a c# a a a tms tdi a : address inputs tms : ieee 1149.1 test input dq0 to dq7 : data inputs / out puts tdi : ieee 1149.1 test input ld# : synchronous load tck : ieee 1149.1 clock input r, w# : read write input tdo : ieee 1149.1 test output nw0#, nw1# : nibble write data select v ref : hstl input reference input k, k# : input clock v dd : power supply c, c# : output clock v dd q : power supply cq, cq# : echo clock v ss : ground zq : output impedance matching nc : no connection dll# : dll disable remarks 1. refer to package drawing for the index mark. 2. 2a and 7a are expansion addresses: 2a for 72mb and 7a for 144mb. 2a of this product can also be used as nc.
4 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 165-pin plastic bga (13 x 15) (top view) [ pd44324092f5-eq2] [ pd44324092f5-eq2-a] 1 2 3 4 5 6 7 8 9 10 11 a cq# v ss a r, w# nc k# nc ld# a a cq b nc nc nc a nc k bw0# a nc nc dq4 c nc nc nc v ss a a a v ss nc nc nc d nc nc nc v ss v ss v ss v ss v ss nc nc nc e nc nc dq5 v dd q v ss v ss v ss v dd q nc nc dq3 f nc nc nc v dd q v dd v ss v dd v dd q nc nc nc g nc nc dq6 v dd q v dd v ss v dd v dd q nc nc nc h dll# v ref v dd q v dd q v dd v ss v dd v dd q v dd q v ref zq j nc nc nc v dd q v dd v ss v dd v dd q nc dq2 nc k nc nc nc v dd q v dd v ss v dd v dd q nc nc nc l nc dq7 nc v dd q v ss v ss v ss v dd q nc nc dq1 m nc nc nc v ss v ss v ss v ss v ss nc nc nc n nc nc nc v ss a a a v ss nc nc nc p nc nc dq8 a a c a a nc nc dq0 r tdo tck a a a c# a a a tms tdi a : address inputs tms : ieee 1149.1 test input dq0 to dq8 : data inputs / out puts tdi : ieee 1149.1 test input ld# : synchronous load tck : ieee 1149.1 clock input r, w# : read write input tdo : ieee 1149.1 test output bw0# : byte write data select v ref : hstl input reference input k, k# : input clock v dd : power supply c, c# : output clock v dd q : power supply cq, cq# : echo clock v ss : ground zq : output impedance matching nc : no connection dll# : dll disable remarks 1. refer to package drawing for the index mark. 2. 2a and 7a are expansion addresses: 2a for 72mb and 7a for 144mb. 2a of this product can also be used as nc.
5 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 165-pin plastic bga (13 x 15) (top view) [ pd44324182f5-eq2] [ pd44324182f5-eq2-a] 1 2 3 4 5 6 7 8 9 10 11 a cq# v ss a r, w# bw1# k# nc ld# a a cq b nc dq9 nc a nc k bw0# a nc nc dq8 c nc nc nc v ss a a0 a v ss nc dq7 nc d nc nc dq10 v ss v ss v ss v ss v ss nc nc nc e nc nc dq11 v dd q v ss v ss v ss v dd q nc nc dq6 f nc dq12 nc v dd q v dd v ss v dd v dd q nc nc dq5 g nc nc dq13 v dd q v dd v ss v dd v dd q nc nc nc h dll# v ref v dd q v dd q v dd v ss v dd v dd q v dd q v ref zq j nc nc nc v dd q v dd v ss v dd v dd q nc dq4 nc k nc nc dq14 v dd q v dd v ss v dd v dd q nc nc dq3 l nc dq15 nc v dd q v ss v ss v ss v dd q nc nc dq2 m nc nc nc v ss v ss v ss v ss v ss nc dq1 nc n nc nc dq16 v ss a a a v ss nc nc nc p nc nc dq17 a a c a a nc nc dq0 r tdo tck a a a c# a a a tms tdi a0, a : address inputs tms : ieee 1149.1 test input dq0 to dq17 : data inputs / out puts tdi : ieee 1149.1 test input ld# : synchronous load tck : ieee 1149.1 clock input r, w# : read write input tdo : ieee 1149.1 test output bw0#, bw1# : byte write data select v ref : hstl input reference input k, k# : input clock v dd : power supply c, c# : output clock v dd q : power supply cq, cq# : echo clock v ss : ground zq : output impedance matching nc : no connection dll# : dll disable remarks 1. refer to package drawing for the index mark. 2. 2a and 7a are expansion addresses: 2a for 72mb and 7a for 144mb. 2a of this product can also be used as nc.
6 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 165-pin plastic bga (13 x 15) (top view) [ pd44324362f5-eq2] [ pd44324362f5-eq2-a] 1 2 3 4 5 6 7 8 9 10 11 a cq# v ss a r, w# bw2# k# bw1# ld# a v ss cq b nc dq27 dq18 a bw3# k bw0# a nc nc dq8 c nc nc dq28 v ss a a0 a v ss nc dq17 dq7 d nc dq29 dq19 v ss v ss v ss v ss v ss nc nc dq16 e nc nc dq20 v dd q v ss v ss v ss v dd q nc dq15 dq6 f nc dq30 dq21 v dd q v dd v ss v dd v dd q nc nc dq5 g nc dq31 dq22 v dd q v dd v ss v dd v dd q nc nc dq14 h dll# v ref v dd q v dd q v dd v ss v dd v dd q v dd q v ref zq j nc nc dq32 v dd q v dd v ss v dd v dd q nc dq13 dq4 k nc nc dq23 v dd q v dd v ss v dd v dd q nc dq12 dq3 l nc dq33 dq24 v dd q v ss v ss v ss v dd q nc nc dq2 m nc nc dq34 v ss v ss v ss v ss v ss nc dq11 dq1 n nc dq35 dq25 v ss a a a v ss nc nc dq10 p nc nc dq26 a a c a a nc dq9 dq0 r tdo tck a a a c# a a a tms tdi a0, a : address inputs tms : ieee 1149.1 test input dq0 to dq35 : data inputs / out puts tdi : ieee 1149.1 test input ld# : synchronous load tck : ieee 1149.1 clock input r, w# : read write input tdo : ieee 1149.1 test output bw0# to bw3# : byte write data select v ref : hstl input reference input k, k# : input clock v dd : power supply c, c# : output clock v dd q : power supply cq, cq# : echo clock v ss : ground zq : output impedance matching nc : no connection dll# : dll disable remarks 1. refer to package drawing for the index mark. 2. 2a and 10a are expansion addresses: 10a for 72mb and 2a for 144mb. 2a and 10a of this product can also be used as nc.
7 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 pin identification (1/2) symbol description a0 a synchronous address inputs: these inputs are regist ered and must meet the setup and hold times around the rising edge of k. all transactions operate on a burst of tw o words (one clock period of bus activity). a0 is used as the lowest order address bit permitting a random st arting address within the burst operation on x18 and x36 devices. these inputs are ignored when devic e is deselected, i.e., nop (ld# = h). dq0 to dqxx synchronous data ios: input data must meet setup and hold times around the rising edges of k and k#. output data is synchronized to the respecti ve c and c# data clocks or to k and k# if c and c# are tied to high. x8 device uses dq0 to dq7. x9 device uses dq0 to dq8. x18 device uses dq0 to dq17. x36 device uses dq0 to dq35. ld# synchronous load: this input is brought low when a bus cycle sequence is to be defined. this definition includes address and read/write direction. all transactions operate on a burst of 2 data (one clock period of bus activity). r, w# synchronous read/write input: when ld# is low, th is input designates the access type (read when r, w# is high, write when r, w# is low) for the loaded address. r, w# must meet the setup and hold times around the rising edge of k. bwx# nwx# synchronous byte writes (nibble writes on x8): when lo w these inputs cause their re spective byte or nibble to be registered and written during write cycles. thes e signals must meet setup and hold times around the rising edges of k and k# for each of the two rising edges comprising the write cycle. see pin configurations for signal to data relationships. x8 device uses nw0#, nw1#. x9 device uses bw0#. x18 device uses bw0#, bw1#. x36 device uses bw0# to bw3#. see byte write operation for relation between bwx#, nwx# and dxx. k, k# input clock: this input clock pair registers addre ss and control inputs on the rising edge of k, and registers data on the rising edge of k and the rising edge of k#. k# is ideally 180 degrees out of phase with k. all synchronous inputs must meet setup and hold times around the clock rising edges. c, c# output clock: this clock pair provides a user c ontrolled means of tuning device output data. the rising edge of c# is used as the output timing refe rence for first output data. the ri sing edge of c is used as the output reference for second output data. ideally, c# is 180 degrees out of phase with c. when use of k and k# as the reference instead of c and c#, then fixed c and c# to high. operation cannot be guaranteed unless c and c# are fixed to high (i.e. toggle of c and c#) cq, cq# synchronous echo clock outputs. the rising edges of these outputs are tightly matched to the synchronous data outputs and can be used as a data valid indicati on. these signals run freely and do not stop when q tristates. if c and c# are stopped (if k and k# are stopped in the single clock mode), cq and cq# will also stop. zq output impedance matching input: this input is used to tune the device outputs to the system data bus impedance. dq, cq and cq# output impedance are set to 0.2 x rq, where rq is a resistor from this bump to ground. the output impedance can be minimi zed by directly connect zq to v dd q. this pin cannot be connected directly to gnd or left unconnected. dll# dll disable: when debugging the system or board, the operation can be performed at a clock frequency slower than tkhkh (max.) without the dll circuit being us ed, if dll# = l. the ac/dc characteristics cannot be guaranteed, however. tms tdi ieee 1149.1 test inputs: 1.8v i/o levels. these balls may be left not connected if the jtag function is not used in the circuit. tck ieee 1149.1 clock input: 1.8v i/o levels. this pin must be tied to v ss if the jtag function is not used in the circuit. tdo ieee 1149.1 test output: 1.8v i/o level. v ref hstl input reference voltage: nominally v dd q/2. provides a reference voltage for the input buffers. vdd power supply: 1.8v nominal. see dc charac teristics and operating conditions for range. vddq power supply: isolated output buffer supply. nominally 1.5v. 1.8v is also permissible. see dc characteristics and operating conditions for range.
8 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 (2/2) symbol description vss power supply: ground nc no connect: these signals are not connected internally. the logic level applied to the ball sites appears in the jtag scan chain when jtag scan.
9 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 block diagram 2 : 1 mux 0 1 /a0' a0' /a0' a0' 0 1 input register e k# r, w#` input register e write address register e k r, w# register e output control logic c# c address register e ld# address a0'' a0''' compare output buffer zq dq output enable register c burst logic d0 q0 a0 clk a0' write register memory array write driver sense amps output register a0' clk k e a0''' r w#
10 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 power-on sequence the following two timing charts show the recommended power-on sequence, i.e., when starting the clock after v dd /v dd q stable and when starting the clock before v dd /v dd q stable. 1. clock starts after v dd /v dd q stable the clock is supplied from a controller. (a) v dd /v dd q v dd /v dd q stable (< 0.1 v dc per 50 ns) dll# clock start normal operation start clock fix high (or tied to v dd q) 20 ns (min.) 1,024 cycles or more stable clock note note input a stable clock from the start. (b) v dd /v dd q dll# switched to high after clock is stable. unstable clock (level, frequency) v dd /v dd q stable (< 0.1 v dc per 50 ns) clock clock start normal operation start 1,024 cycles or more stable clock (c) v dd /v dd q dll# 30 ns. (min.) clock stop v dd /v dd q stable (< 0.1 v dc per 50 ns) fix high (or tied to v dd q) unstable clock (level, frequency) clock clock start normal operation start 1,024 cycles or more stable clock
11 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 2. clock starts before v dd /v dd q stable the clock is supplied from a clock generator. (a) v dd /v dd q dll# 30 ns. (min.) clock stop v dd /v dd q stable (< 0.1 v dc per 50 ns) fix high (or tied to v dd q) unstable clock (level, frequency) clock clock start normal operation start 1,024 cycles or more stable clock (b) v dd /v dd q dll# clock keep running switched to high after clock is stable. high or low 30 ns (min.) dll# low v dd /v dd q stable (< 0.1 v dc per 50 ns) normal operation start 1,024 cycles or more stable clock unstable clock (level, frequency) clock clock start
12 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 burst sequence linear burst sequence table [ pd44324182, pd44324362] a0 a0 external address 0 1 1st internal burst address 1 0 truth table operation ld# r, w# clk dq write cycle l l l h data in load address, input write data on two input data d(a1) d(a2) consecutive k and k# rising edge input clock k(t+1) k#(t+1) read cycle l h l h data out load address, read data on two output data q(a1) q(a2) consecutive c and c# rising edge output clock c#(t+1) c(t+2) nop (no operation) h x l h high-z clock stop x x stopped previous state remarks 1. h : high level, l : low level, : don?t care, : rising edge. 2. data inputs are registered at k and k# rising edges . data outputs are delivered at c and c# rising edges except if c and c# are high then data out puts are delivered at k and k# rising edges. 3. all control inputs in the truth table must meet set up/hold times around the rising edge (low to high) of k. all control inputs are register ed during the rising edge of k. 4. this device contains circuitry that ensure the outputs to be in high impedance during power-up. 5. refer to state diagram and timing diagrams for clarification. 6. a1 refers to the address input during a write or r ead cycle. a2 refers to the next internal burst address in accordance with the linear burst sequence. 7. it is recommended that k = k# = c = c# when clock is stopped. this is not essential but permits most rapid restart by overcoming transmission line charging symmetrically.
13 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 byte write operation [ pd44324082] operation k k# nw0# nw1# write dq0 to dq7 l h ? 0 0 ? l h 0 0 write dq0 to dq3 l h ? 0 1 ? l h 0 1 write dq4 to dq7 l h ? 1 0 ? l h 1 0 write nothing l h ? 1 1 ? l h 1 1 remark h : high level, l : low level, : rising edge. [ pd44324092] operation k k# bw0# write dq0 to dq8 l h ? 0 ? l h 0 write nothing l h ? 1 ? l h 1 remark h : high level, l : low level, : rising edge. [ pd44324182] operation k k# bw0# bw1# write dq0 to dq17 l h ? 0 0 ? l h 0 0 write dq0 to dq8 l h ? 0 1 ? l h 0 1 write dq9 to dq17 l h ? 1 0 ? l h 1 0 write nothing l h ? 1 1 ? l h 1 1 remark h : high level, l : low level, : rising edge. [ pd44324362] operation k k# bw0# bw1# bw2# bw3# write dq0 to dq35 l h ? 0 0 0 0 ? l h 0 0 0 0 write dq0 to dq8 l h ? 0 1 1 1 ? l h 0 1 1 1 write dq9 to dq17 l h ? 1 0 1 1 ? l h 1 0 1 1 write dq18 to dq26 l h ? 1 1 0 1 ? l h 1 1 0 1 write dq27 to dq35 l h ? 1 1 1 0 ? l h 1 1 1 0 write nothing l h ? 1 1 1 1 ? l h 1 1 1 1 remark h : high level, l : low level, : rising edge.
14 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 bus cycle state diagram read double count = count + 2 write double count = count + 2 power up write nop supply voltage provided load new address count = 0 nop load, count = 2 read load, count = 2 load nop, count = 2 nop, count = 2 remarks 1. a0 is internally advanced in accordance with the burst order table. bus cycle is terminated after burst count = 2. 2. state machine control timing sequence is controlled by k.
15 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 electrical specifications absolute maximum ratings parameter symbol conditions min. typ. max. unit supply voltage v dd ?0.5 +2.5 v output supply voltage v dd q ?0.5 v dd v input voltage v in ?0.5 v dd + 0.5 (2.5 v max.) v input / output voltage v i/o ?0.5 v dd q + 0.5 (2.5 v max.) v operating ambient temperature t a 0 70 c storage temperature t stg ?55 +125 c caution exposing the device to stress above those listed in absolute maximum ratings could cause permanent damage. the device is not meant to be operated under conditions outside the limits described in the operational section of this sp ecification. exposure to absolute maximum rating conditions for extended periods may affect device reliability. recommended dc operating conditions (t a = 0 to 70 c) parameter symbol conditions min. typ. max. unit note supply voltage v dd 1.7 1.9 v output supply voltage v dd q 1.4 v dd v 1 high level input voltage v ih (dc) v ref + 0.1 v dd q + 0.3 v 1, 2 low level input voltage v il (dc) ?0.3 v ref ? 0.1 v 1, 2 clock input voltage v in ?0.3 v dd q + 0.3 v 1, 2 reference voltage v ref 0.68 0.95 v notes 1. during normal operation, v dd q must not exceed v dd . 2. power-up: v ih v dd q + 0.3 v and v dd 1.7 v and v dd q 1.4 v for t 200 ms recommended ac operating conditions (t a = 0 to 70 c) parameter symbol conditions min. typ. max. unit note high level input voltage v ih (ac) v ref + 0.2 ? v 1 low level input voltage v il (ac) ? v ref ? 0.2 v 1 note 1. overshoot: v ih (ac) v dd + 0.7 v for t tkhkh/2 undershoot: v il (ac) ? 0.5 v for t tkhkh/2 control input signals may not have pulse widths less than tkhkl (min.) or operate at cycle rates less than tkhkh (min.).
16 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 dc characteristics (t a = 0 to 70c, v dd = 1.8 0.1 v) parameter symbol test condition min. typ. max. unit note x8, x9 x18 x36 input leakage current i li ?2 ? +2 a i/o leakage current i lo ?2 ? +2 a operating supply current i dd v in v il or v in v ih , -e37 690 970 1,090 ma (read write cycle) i i/o = 0 ma -e40 650 900 1,000 cycle = max. -e50 550 750 850 standby supply current i sb1 v in v il or v in v ih , -e37 520 ma (nop) i i/o = 0 ma -e40 500 cycle = max. -e50 400 high level output voltage v oh(low) |i oh | 0.1 ma v dd q ? 0.2 ? v dd q v 3, 4 v oh note1 v dd q/2?0.12 ? v dd q/2+0.12 v 3, 4 low level output voltage v ol(low) i ol 0.1 ma v ss ? 0.2 v 3, 4 v ol note2 v dd q/2?0.12 ? v dd q/2+0.12 v 3, 4 notes 1. outputs are impedance-controlled. | i oh | = (v dd q/2)/(rq/5) 15 % for values of 175 ? rq 350 ? . 2. outputs are impedance-controlled. i ol = (v dd q/2)/(rq/5) 15 % for values of 175 ? rq 350 ? . 3. ac load current is higher than the shown dc values. 4. hstl outputs meet jedec hstl class i and standards. capacitance (t a = 25 c, f = 1mhz) parameter symbol test conditions min. typ. max. unit input capacitance (address, control) c in v in = 0 v 4 5 pf input / output capacitance c i/o v i/o = 0 v 6 7 pf (dq, cq, cq#) clock input capacitance c clk v clk = 0 v 5 6 pf remark these parameters are periodically sampled and not 100% tested. thermal resistance parameter symbol test conditions min. typ. max. unit thermal resistance j-a 22.6 c/w (junction ? ambient) thermal resistance j-c 2.0 c/w (junction ? case) remark these parameters are simulated under the condition of air flow velocity = 1 m/s.
17 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 ac characteristics (t a = 0 to 70 c, v dd = 1.8 0.1 v) ac test conditions (v dd = 1.8 0.1 v, v dd q = 1.4 to v dd ) input waveform (rise / fall time 0.3 ns) 0.75 v 0.75 v test points 1.25 v 0.25 v output waveform v dd q / 2 v dd q / 2 test points output load condition figure 1. external load at test v dd q / 2 0.75 v 50 ? z o = 50 ? 250 ? sram v ref zq
18 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 read and write cycle parameter symbol -e37 -e40 -e50 unit note (270 mhz) (250 mhz) (200 mhz) min. max. min. max. min. max. clock average clock cycle time (k, k#, c, c#) tkhkh 3.7 8.4 4.0 8.4 5.0 8.4 ns 1 clock phase jitter (k, k#, c, c#) tkc var ? 0.2 ? 0.2 ? 0.2 ns 2 clock high time (k, k#, c, c#) tkhkl 1.5 ? 1.6 ? 2.0 ? ns clock low time (k, k#, c, c#) tklkh 1.5 ? 1.6 ? 2.0 ? ns clock (active high) tkhk#h 1.7 ? 1.8 ? 2.2 ? ns to clock# (active low) (k k#, c c#) clock# (active low) tk#hkh 1.7 ? 1.8 ? 2.2 ? ns to clock (active high) (k# k, c# c) clock to data clock 250 to 270 mhz tkhch 0 1.65 ? ? ? ? ns (k c, k# c#) 200 to 250 mhz 0 1.8 0 1.8 ? ? 167 to 200 mhz 0 2.3 0 2.3 0 2.3 133 to 167 mhz 0 2.8 0 2.8 0 2.8 < 133 mhz 0 3.55 0 3.55 0 3.55 dll lock time (k, c) tkc lock 1,024 ? 1,024 ? 1,024 ? cycle 3 k static to dll reset tkc reset 30 ? 30 ? 30 ? ns output times c, c# high to output valid tchqv ? 0.45 ? 0.45 ? 0.45 ns c, c# high to output hold tchqx ? 0.45 ? ? 0.45 ? ? 0.45 ? ns c, c# high to echo clock valid tchcqv ? 0.45 ? 0.45 ? 0.45 ns c, c# high to echo clock hold tchcqx ? 0.45 ? ? 0.45 ? ? 0.45 ? ns cq, cq# high to output valid tcqhqv ? 0.3 ? 0.3 ? 0.35 ns 4 cq, cq# high to output hold tcqhqx ? 0.3 ? ? 0.3 ? ? 0.35 ? ns 4 c high to output high-z tchqz ? 0.45 ? 0.45 ? 0.45 ns c high to output low-z tchqx1 ? 0.45 ? ? 0.45 ? ? 0.45 ? ns setup times address valid to k rising edge tavkh 0.5 ? 0.5 ? 0.6 ? ns 5 synchronous load input (ld#), tivkh 0.5 ? 0.5 ? 0.6 ? ns 5 read write input (r, w#) valid to k rising edge data inputs and write data select tdvkh 0.35 ? 0.35 ? 0.4 ? ns 5 inputs (bwx#, nwx#) valid to k, k# rising edge hold times k rising edge to address hold tkhax 0.5 ? 0.5 ? 0.6 ? ns 5 k rising edge to tkhix 0.5 ? 0.5 ? 0.6 ? ns 5 synchronous load input (ld#), read write input (r, w#) hold k, k# rising edge to data inputs and tkhdx 0.35 ? 0.35 ? 0.4 ? ns 5 write data select inputs (bwx#, nwx#) hold
19 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 notes 1. when debugging the system or board, these products can operate at a cl ock frequency slower than tkhkh (max.) without the dll circuit being used, if dll# = l. the ac/dc characteristics cannot be guaranteed, however. 2. clock phase jitter is the variance from clock rising e dge to the next expected clock rising edge. tkc var (max.) indicates a peak-to-peak value. 3. v dd slew rate must be less than 0.1 v dc per 50 ns for dll lock retention. dll lock time begins once v dd and input clock are stable. it is recommended that the device is k ept nop (ld# = h) during these cycles. 4. echo clock is very tightly controlled to data valid / data hold. by design, there is a 0.1 ns variation from echo clock to data. the data s heet parameters reflect tester guardba nds and test setup variations. 5. this is a synchronous device. all addresses, dat a and control lines must meet the specified setup and hold times for all latching clock edges. remarks 1. this parameter is sampled. 2. test conditions as specified with the output loading as shown in ac test conditions unless otherwise noted. 3. control input signals may not be operated with pulse widths less than tkhkl (min.). 4. if c, c# are tied high, k, k# become the references for c, c# timing parameters. 5. v dd q is 1.5 v dc.
20 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 read and write timing tkhkh tkhax q01 q11 k ld# address dq q02 k# 24 6810 135 79 r, w# a0 a1 a2 qx2 q12 tkhk#h tk#hkh cq cq# c c# tkhch tchqx1 tchqv tchqv tchqx tchqz tkhkl tklkh tkhkh tkhk#h d21 d31 d22 d32 tdvkh tkhdx tdvkh tkhdx nop read (burst of 2) read (burst of 2) nop nop write (burst of 2) write (burst of 2) tkhkl tivkh tklkh tkhix tklkh tchcqv tchcqv tchcqx tchcqx tcqhqx tcqhqv read (burst of 2) a3 a4 tchqx q41 q42 tk#hkh tavkh tkhch remarks 1. q01 refers to output from address a0. q02 refers to output from the next internal burst address following a0, etc. 2. outputs are disabled (high impedance) 2.5 clocks after the last read (ld# = l, r, w# = h) is input in the sequences of [read]-[nop]. 3. the second nop cycle at the cycle "5" is not necessary for correct device operation; however, at high clock frequencies it may be required to prevent bus contention.
21 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 application example sram controller data io address ld# r, w# bw# sram#1 cq/cq# sram#4 cq/cq# source clk/clk# return clk/clk# zq cq# cq sram#4 dq a ld# r, w# bwx# c/c# k/k# r r v t v t r v t r v t r v t r = 250 ? ? sram#1 dq a ld# r, w# bwx# c/c# k/k# r = 50 ? v t = v ref . . . . . . remark ac specifications are defined at the condition of sram outputs, cq, cq# and dq with termination.
22 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 jtag specification these products support a limited set of jtag functions as in ieee standard 1149.1. test access port (tap) pins pin name pin assignments description tck 2r test clock input. all input are captured on the rising edge of tck and all outputs propagate from the falling edge of tck. tms 10r test mode select. this is the command input for the tap controller state machine. tdi 11r test data input. this is the input side of the serial registers placed between tdi and tdo. the register placed between tdi and tdo is determined by the state of the tap controller state machine and the instruction that is currently loaded in the tap instruction. tdo 1r test data output. this is the output si de of the serial registers placed between tdi and tdo. output changes in response to the falling edge of tck. remark the device does not have trst (tap reset). the test -logic reset state is entered while tms is held high for five rising edges of tck. the tap contro ller state is also reset on the sram power-up. jtag dc characteristics (t a = 0 to 70c, v dd = 1.8 0.1 v, un less otherwise noted) parameter symbol conditions min. typ. max. unit note jtag input leakage current i li 0 v v in v dd ?5.0 ? +5.0 a jtag i/o leakage current i lo 0 v v in v dd q, ?5.0 ? +5.0 a outputs disabled jtag input high voltage v ih 1.3 ? v dd +0.3 v jtag input low voltage v il ?0.3 ? +0.5 v jtag output high voltage v oh1 | i ohc | = 100 a 1.6 ? ? v v oh2 | i oht | = 2 ma 1.4 ? ? v jtag output low voltage v ol1 i olc = 100 a ? ? 0.2 v v ol2 i olt = 2 ma ? ? 0.4 v
23 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 jtag ac test conditions input waveform (rise / fall time 1 ns) 0.9 v 0.9 v test points 1.8 v 0 v output waveform 0.9 v 0.9 v test points output load figure 2. external load at test tdo z o = 50 ? v tt = 0.9 v 20 pf 50 ?
24 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 jtag ac characteristics (t a = 0 to 70 c) parameter symbol conditions min. typ. max. unit note clock clock cycle time t thth 100 ? ? ns clock frequency f tf ? ? 10 mhz clock high time t thtl 40 ? ? ns clock low time t tlth 40 ? ? ns output time tck low to tdo unknown t tlox 0 ? ? ns tck low to tdo valid t tlov ? ? 20 ns setup time tms setup time t mvth 10 ? ? ns tdi valid to tck high t dvth 10 ? ? ns capture setup time t cs 10 ? ? ns hold time tms hold time t thmx 10 ? ? ns tck high to tdi invalid t thdx 10 ? ? ns capture hold time t ch 10 ? ? ns jtag timing diagram t thth t tlov t tlth t thtl t mvth t thdx t dvth t thmx tck tms tdi tdo t tlox
25 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 scan register definition (1) register name description instruction register the instruction register holds the instru ctions that are executed by the tap controller when it is moved into the run-test/idle or the various data regi ster state. the register can be loaded when it is placed between the tdi and tdo pins. the instructi on register is automatically preloaded with the idcode instruction at power-up whenever the c ontroller is placed in test-logic-reset state. bypass register the bypass regi ster is a single bit register that can be pl aced between tdi and tdo. it allows serial test data to be passed through the rams tap to anot her device in the scan chai n with as little delay as possible. id register the id register is a 32 bit register that is loaded with a device and vendor specific 32 bit code when the controller is put in capture-dr state with the idcode command loaded in the instruction register. the register is then placed between the tdi and tdo pi ns when the controller is moved into shift-dr state. boundary register the boundary register, under the control of the tap controller, is loaded with the contents of the rams i/o ring when the controller is in captur e-dr state and then is placed between the tdi and tdo pins when the controller is moved to shift-dr state. several tap instructions can be used to activate the boundary register. the scan exit order tables describe which device bump connects to each boundary register location. the first column defines the bit?s posit ion in the boundary register. the second column is the name of the input or i/o at the bump and the third column is the bump number. scan register definition (2) register name bit size unit instruction register 3 bit bypass register 1 bit id register 32 bit boundary register 109 bit id register definition part number organization id [31:28] vendor revision no. id [ 27:12] part no. id [11:1] vendor id no. id [0] fix bit pd44324082 4m x 8 xxxx 0000 0000 0011 1101 00000010000 1 pd44324092 4m x 9 xxxx 0000 0000 0011 1110 00000010000 1 pd44324182 2m x 18 xxxx 0000 0000 0011 1111 00000010000 1 pd44324362 1m x 36 xxxx 0000 0000 0100 0000 00000010000 1
26 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 scan exit order bit signal name bump bit signal name bump bit signal name bump no. x8 x9 x18 x36 id no. x8 x9 x18 x36 id no. x8 x9 x18 x36 id 1 c# 6r 37 nc nc nc nc 10d 73 nc nc nc nc 2c 2 c 6p 38 nc nc nc nc 9e 74 dq4 dq5 dq11 dq20 3e 3 a 6n 39 nc nc dq7 dq17 10c 75 nc nc nc dq29 2d 4 a 7p 40 nc nc nc dq16 11d 76 nc nc nc nc 2e 5 a 7n 41 nc nc nc nc 9c 77 nc nc nc nc 1e 6 a 7r 42 nc nc nc nc 9d 78 nc nc dq12 dq30 2f 7 a 8r 43 dq3 dq4 dq8 dq8 11b 79 nc nc nc dq21 3f 8 a 8p 44 nc nc nc dq7 11c 80 nc nc nc nc 1g 9 a 9r 45 nc nc nc nc 9b 81 nc nc nc nc 1f 10 nc dq0 dq0 dq0 11p 46 nc nc nc nc 10b 82 dq5 dq6 dq13 dq22 3g 11 nc nc nc dq9 10p 47 cq 11a 83 nc nc nc dq31 2g 12 nc nc nc nc 10n 48 a a a v ss 10a 84 dll# 1h 13 nc nc nc nc 9p 49 a 9a 85 nc nc nc nc 1j 14 nc nc dq1 dq11 10m 50 a 8b 86 nc nc nc nc 2j 15 nc nc nc dq10 11n 51 a 7c 87 nc nc dq14 dq23 3k 16 nc nc nc nc 9m 52 a a a0 a0 6c 88 nc nc nc dq32 3j 17 nc nc nc nc 9n 53 ld# 8a 89 nc nc nc nc 2k 18 dq0 dq1 dq2 dq2 11l 54 nc nc nc bw1# 7a 90 nc nc nc nc 1k 19 nc nc nc dq1 11m 55 nw0# bw0# bw0# bw0# 7b 91 dq6 dq7 dq15 dq33 2l 20 nc nc nc nc 9l 56 k 6b 92 nc nc nc dq24 3l 21 nc nc nc nc 10l 57 k# 6a 93 nc nc nc nc 1m 22 nc nc dq3 dq3 11k 58 nc nc nc bw3# 5b 94 nc nc nc nc 1l 23 nc nc nc dq12 10k 59 nw1# nc bw1# bw2# 5a 95 nc nc dq16 dq25 3n 24 nc nc nc nc 9j 60 r, w# 4a 96 nc nc nc dq34 3m 25 nc nc nc nc 9k 61 a 5c 97 nc nc nc nc 1n 26 dq1 dq2 dq4 dq13 10j 62 a 4b 98 nc nc nc nc 2m 27 nc nc nc dq4 11j 63 a 3a 99 dq7 dq8 dq17 dq26 3p 28 zq 11h 64 v ss 2a 100 nc nc nc dq35 2n 29 nc nc nc nc 10g 65 cq# 1a 101 nc nc nc nc 2p 30 nc nc nc nc 9g 66 nc nc dq9 dq27 2b 102 nc nc nc nc 1p 31 nc nc dq5 dq5 11f 67 nc nc nc dq18 3b 103 a 3r 32 nc nc nc dq14 11g 68 nc nc nc nc 1c 104 a 4r 33 nc nc nc nc 9f 69 nc nc nc nc 1b 105 a 4p 34 nc nc nc nc 10f 70 nc nc dq10 dq19 3d 106 a 5p 35 dq2 dq3 dq6 dq6 11e 71 nc nc nc dq28 3c 107 a 5n 36 nc nc nc dq15 10e 72 nc nc nc nc 1d 108 a 5r 109 ? internal remark bump id 10a of bit no. 48 can also be used as nc if the product is x36. bump id 2a of bit no. 64 can also be used as nc. the register always indicates a low level, however.
27 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 jtag instructions instructions description extest the extest instruction allows circuitry external to the component package to be tested. boundary- scan register cells at output pins are used to apply te st vectors, while those at input pins capture test results. typically, the first test vector to be appli ed using the extest instruction will be shifted into the boundary scan register using the preload instruction. thus, during the update-ir state of extest, the output drive is turned on and the prel oad data is driven onto the output pins. idcode the idcode instruction causes the id rom to be loaded into the id register when the controller is in capture-dr mode and places the id register betw een the tdi and tdo pins in shift-dr mode. the idcode instruction is the default instruction loaded in at power up and any time the controller is placed in the test-logic-reset state. bypass when the bypass instruction is loaded in the inst ruction register, the bypass register is placed between tdi and tdo. this occurs when the tap controller is moved to the shift-dr state. this allows the board level scan path to be shortened to fa cilitate testing of other devices in the scan path. sample / preload sample / preload is a standard 1149.1 mandatory public instruction. when the sample / preload instruction is loaded in the instruction r egister, moving the tap controller into the capture- dr state loads the data in the rams input and dq pi ns into the boundary scan register. because the ram clock(s) are independent from the tap clock (tck ) it is possible for the tap to attempt to capture the i/o ring contents while the input buffers are in transition (i.e., in a metastable state). although allowing the tap to sample metastable input will not harm the device, repeatable results cannot be expected. ram input signals must be st abilized for long enough to meet the taps input data capture setup plus hold time (t cs plus t ch ). the rams clock inputs need not be paused for any other tap operation except capturing the i/o ring contents into the boundary scan register. moving the controller to shift-dr state then places the boundary scan register between the tdi and tdo pins. sample-z if the sample-z instruction is loaded in the inst ruction register, all ram dq pins are forced to an inactive drive state (high impedance) and the bou ndary register is connected between tdi and tdo when the tap controller is moved to the shift-dr state. jtag instruction coding ir2 ir1 ir0 instruction note 0 0 0 extest 0 0 1 idcode 0 1 0 sample-z 1 0 1 1 reserved 2 1 0 0 sample / preload 1 0 1 reserved 2 1 1 0 reserved 2 1 1 1 bypass notes 1. tristate all dq pins and capture the pad values into a serial scan latch. 2. do not use this instruction code because t he vendor uses it to evaluate this product.
28 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 output pin states of cq, cq# and q instructions control-register status output pin status note cq,cq# q extest 0 update hi-z 1 update update idcode 0 sram sram 1 sram sram sample-z 0 hi-z hi-z 1 hi-z hi-z sample 0 sram sram 1 sram sram bypass 0 sram sram 1 sram sram remark the output pin statuses during eac h instruction vary according to the control-register st atus (value of boundary scan register, bit no. 109). there are three statuses: update : contents of the ?updat e register? are output to the output pin (qdr pad). sram : contents of the sram internal output ?sram output? are output to the output pin (qdr pad). hi-z : the output pin (qdr pad) becomes hi-z by controlling of the ?hi-z jtag ctrl?. the control-register status is set during update-dr at the extest or sample instruction. sram capture register boundary scan register update register qdr pad sram output driver hi-z jtag ctrl hi-z update sram output
29 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 boundary scan register status of output pins cq, cq# and q instructions sram status boundary scan register status note cq,cq# q extest read (lo-z) pad pad nop (hi-z) pad pad idcode read (lo-z) ? ? no definition nop (hi-z) ? ? sample-z read (lo-z) pad pad nop (hi-z) pad pad sample read (lo-z) internal internal nop (hi-z) internal pad bypass read (lo-z) ? ? no definition nop (hi-z) ? ? remark the boundary scan register stat uses during execution each instruction vary according to the instruction code and sram operation mode. there are two statuses: pad : contents of the output pi n (qdr pad) are captured in the ?capture register? in the boundary scan register. internal : contents of the sram internal output ?sram output? are captured in the ?capture register? in the boundary scan register. pad internal sram output driver update register qdr pad hi-z jtag ctrl capture register sram output boundary scan register
30 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 tap controller state diagram test-logic-reset run-test / idle select-dr-scan capture-dr capture-ir shift-dr exit1-dr pause-dr exit2-dr update-dr update-ir exit2-ir pause-ir exit1-ir shift-ir select-ir-scan 0 0 0 1 0 1 1 0 0 1 0 1 1 0 0 0 0 10 10 11 1 0 1 1 0 1 0 11 disabling the test access port it is possible to use this device without utilizing the tap. to disable the tap controller without interfering with normal operation of the device, tck must be tied to v ss to preclude mid level inputs. tdi and tms may be left open but fix them to v dd via a resistor of about 1 k ? when the tap controller is not used. tdo should be left unconnected also when the tap controller is not used.
31 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 test logic operation (instruction scan) tck controller state tdi tms tdo test-logic-reset run-test/idle select-dr-scan select-ir-scan capture-ir shift-ir exit1-ir pause-ir exit2-ir shift-ir exit1-ir update-ir run-test/idle idcode instruction register state new instruction output inactive
32 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 test logic (data scan) controller state tdi tms tdo run-test/idle select-dr-scan capture-dr shift-dr exit1-dr pause-dr exit2-dr shift-dr exit1-dr update-dr test-logic-reset instruction instruction register state idcode run-test/idle select-dr-scan select-ir-scan output inactive tck
33 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 package drawing 165-pin plastic bga (13x15) item dimensions d e w e a a1 a2 13.00 p165f5-100-eq2 x y y1 zd ze b a 11 10 9 8 7 6 5 4 3 2 1 index mark ze zd b s wb e s wa d s y s a a2 a1 e y1 s s x ba b m ?
34 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 recommended soldering condition please consult with our sales offices for soldering conditions of these products. types of surface mount devices pd44324082f5-eq2 : 165-pin plastic bga (13 x 15) pd44324092f5-eq2 : 165-pin plastic bga (13 x 15) pd44324182f5-eq2 : 165-pin plastic bga (13 x 15) pd44324362f5-eq2 : 165-pin plastic bga (13 x 15) pd44324082f5-eq2-a : 165-pin plastic bga (13 x 15) pd44324092f5-eq2-a : 165-pin plastic bga (13 x 15) pd44324182f5-eq2-a : 165-pin plastic bga (13 x 15) pd44324362f5-eq2-a : 165-pin plastic bga (13 x 15)
35 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 revision history edition/ page type of location description date this previous revision (previous edition this edition) edition edition 3rd edition/ throughout throughout addition ? -e37 (270 mhz) mar. 2006
36 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 [ memo ]
37 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 [ memo ]
38 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 [ memo ]
39 data sheet m16780ej3v0ds pd44324082, 44324092, 44324182, 44324362 1 2 3 4 voltage application waveform at input pin waveform distortion due to input noise or a reflected wave may cause malfunction. if the input of the cmos device stays in the area between v il (max) and v ih (min) due to noise, etc., the device may malfunction. take care to prevent chattering noise from entering the device when the input level is fixed, and also in the transition period when the input level passes through the area between v il (max) and v ih (min). handling of unused input pins unconnected cmos device inputs can be cause of malfunction. if an input pin is unconnected, it is possible that an internal input level may be generated due to noise, etc., causing malfunction. cmos devices behave differently than bipolar or nmos devices. input levels of cmos devices must be fixed high or low by using pull-up or pull-down circuitry. each unused pin should be connected to v dd or gnd via a resistor if there is a possibility that it will be an output pin. all handling related to unused pins must be judged separately for each device and according to related specifications governing the device. precaution against esd a strong electric field, when exposed to a mos device, can cause destruction of the gate oxide and ultimately degrade the device operation. steps must be taken to stop generation of static electricity as much as possible, and quickly dissipate it when it has occurred. environmental control must be adequate. when it is dry, a humidifier should be used. it is recommended to avoid using insulators that easily build up static electricity. semiconductor devices must be stored and transported in an anti-static container, static shielding bag or conductive material. all test and measurement tools including work benches and floors should be grounded. the operator should be grounded using a wrist strap. semiconductor devices must not be touched with bare hands. similar precautions need to be taken for pw boards with mounted semiconductor devices. status before initialization power-on does not necessarily define the initial status of a mos device. immediately after the power source is turned on, devices with reset functions have not yet been initialized. hence, power-on does not guarantee output pin levels, i/o settings or contents of registers. a device is not initialized until the reset signal is received. a reset operation must be executed immediately after power-on for devices with reset functions. power on/off sequence in the case of a device that uses different power supplies for the internal operation and external interface, as a rule, switch on the external power supply after switching on the internal power supply. when switching the power supply off, as a rule, switch off the external power supply and then the internal power supply. use of the reverse power on/off sequences may result in the application of an overvoltage to the internal elements of the device, causing malfunction and degradation of internal elements due to the passage of an abnormal current. the correct power on/off sequence must be judged separately for each device and according to related specifications governing the device. input of signal during power off state do not input signals or an i/o pull-up power supply while the device is not powered. the current injection that results from input of such a signal or i/o pull-up power supply may cause malfunction and the abnormal current that passes in the device at this time may cause degradation of internal elements. input of signals during the power off state must be judged separately for each device and according to related specifications governing the device. notes for cmos devices 5 6
pd44324082, 44324092, 44324182, 44324362 the information in this document is current as of march, 2006. the information is subject to change without notice. for actual design-in, refer to the latest publications of nec electronics data sheets or data books, etc., for the most up-to-date specifications of nec electronics products. not all products and/or types are available in every country. please check with an nec electronics sales representative for availability and additional information. no part of this document may be copied or reproduced in any form or by any means without the prior written consent of nec electronics. nec electronics assumes no responsibility for any errors that may appear in this document. nec electronics does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from the use of nec electronics products listed in this document or any other liability arising from the use of such products. no license, express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of nec electronics or others. descriptions of circuits, software and other related information in this document are provided for illustrative purposes in semiconductor product operation and application examples. the incorporation of these circuits, software and information in the design of a customer's equipment shall be done under the full responsibility of the customer. nec electronics assumes no responsibility for any losses incurred by customers or third parties arising from the use of these circuits, software and information. while nec electronics endeavors to enhance the quality, reliability and safety of nec electronics products, customers agree and acknowledge that the possibility of defects thereof cannot be eliminated entirely. to minimize risks of damage to property or injury (including death) to persons arising from defects in nec electronics products, customers must incorpor ate sufficient safet y measures in their design, such as redundancy, fire-containment and anti-failure features. nec electronics products are classified into the following three quality grades: "standard", "special" and "specific". the "specific" quality grade applies only to nec electronics products developed based on a customer- designated "quality assurance program" for a specific application. the recommended applications of an nec electronics product depend on its quality grade, as indicated below. customers must check the quality grade of each nec electronics product before using it in a particular application. the quality grade of nec electronics products is "standard" unless otherwise expressly specified in nec electronics data sheets or data books, etc. if customers wish to use nec electronics products in applications not intended by nec electronics, they must contact an nec electronics sales representative in advance to determine nec electronics' willingness to support a given application. (note) ? ? ? ? ? ?

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