revision 1.0 april 2000 k6f4008u1d family - 1 - cmos sram document title 512k x8 bit super low power and low voltage full cmos static ram the attached datasheets are provided by samsung electronics. samsung electronics co., ltd. reserve the right to change the spec ifications and products. samsung electronics will answer to your questions about device. if you have any questions, please contact the samsung branch offices. revision history revision no. 0.0 1.0 remark preliminary final history initial draft finalized - change for twhz: 25 to 20ns for 70ns product - change for tdw: 20 to 25ns for 55ns product 25 to 30ns for 70ns product draft date march 16, 2000 april 24, 2000
revision 1.0 april 2000 k6f4008u1d family - 2 - cmos sram product family 1. the parameter is measured with 30pf test load. product family operating temperature vcc range speed power dissipation pkg type standby (i sb1 , typ.) operating (i cc1 , max) k6f4008u1d-f industrial(-40~85 c) 2.7~3.3v 55 1) /70ns 0.5 m a 3ma 32-tsop1-0813.4f 512k x 8 bit super low power and low voltage full cmos static ram general description the k6f4008u1d families are fabricated by samsung s advanced full cmos process technology. the families support small package type for user flexibility of system design. the families also supports low data retention voltage for battery back-up operation with low data retention current. features process technology: full cmos organization: 512k x8 bit power supply voltage: 2.7~3.3v low data retention voltage: 1.5v(min) three state output status and ttl compatible package type: 32-tsop1-0813.4f samsung electronics co., ltd. reserves the right to change products and specifications without notice . functional block diagram precharge circuit. memory array 2048 rows 256 8 columns i/o circuit column select clk gen. row select cs we i/o 1 data cont data cont oe i/o 8 control logic name function name function cs chip select input vcc power we write enable input vss ground oe output enable input i/o 1 ~i/o 8 data inputs/outputs a 0 ~a 18 address inputs a11 a9 a8 a13 we a18 a15 vcc a17 a16 a14 a12 a7 a6 a5 a4 oe a10 cs i/o8 i/o7 i/o6 i/o5 i/o4 vss i/o3 i/o2 i/o1 a0 a1 a2 a3 (forward) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32- s tsop1 pin description row address column address
revision 1.0 april 2000 k6f4008u1d family - 3 - cmos sram absolute maximum ratings 1) 1. stresses greater than those listed under "absolute maximum ratings" may cause permanent damage to the device. functional oper ation should be restricted to recommended operating condition. exposure to absolute maximum rating conditions for extended periods may affect re liability. item symbol ratings unit voltage on any pin relative to vss v in ,v out -0.2 to v cc +0.5v v voltage on vcc supply relative to vss v cc -0.2 to 4.0v v power dissipation p d 1.0 w storage temperature t stg -65 to 150 c operating temperature t a -40 to 85 c product list industrial temperature products(-40~85 c) part name function k6f4008u1d-yf55 k6f4008u1d-yf70 32-stsop1-f, 55ns, 3.0v 32-stsop1-f, 70ns, 3.0v functional description 1. x means don t care (must be in low or high state) cs oe we i/o mode power h x 1) x 1) high-z deselected standby l h h high-z output disabled active l l h dout read active l x 1) l din write active
revision 1.0 april 2000 k6f4008u1d family - 4 - cmos sram dc and operating characteristics 1. super low power product=5 m a with special handling. item symbol test conditions min typ max unit input leakage current i li v in =vss to vcc -1 - 1 m a output leakage current i lo cs =v ih, oe =v ih or we =v il , v io =vss to vcc -1 - 1 m a operating power supply current i cc i io =0ma, cs =v il, we =v ih, v in =v il or v ih - - 2 ma average operating current i cc1 cycle time=1 m s, 100%duty, i io =0ma, cs 0.2v, v in 0.2v or v in 3 v cc -0.2v - - 3 ma i cc2 cycle time=min, i io =0ma, 100% duty, cs =v il , vin=v il or v ih - - 30 ma output low voltage v ol i ol = 2.1ma - - 0.4 v output high voltage v oh i oh = -1.0ma 2.4 - - v standby current(ttl) i sb cs =v ih , other inputs=v il or v ih - - 0.3 ma standby current (cmos) i sb1 cs 3 vcc-0.2v, other input =0~vcc - 0.5 12 1) m a recommended dc operating conditions 1) note: 1. t a =-40 to 85 c, otherwise specified. 2. overshoot: vcc+2.0v in case of pulse width 20ns. 3. undershoot: -2.0v in case of pulse width 20ns. 4. overshoot and undershoot are sampled, not 100% tested. item symbol min typ max unit supply voltage vcc 2.7 3.0 3.3 v ground vss 0 0 0 v input high voltage v ih 2.2 - vcc+0.3 2) v input low voltage v il -0.2 3) - 0.6 v capacitance 1) (f=1mhz, t a =25 c) 1. capacitance is sampled, not 100% tested. item symbol test condition min max unit input capacitance c in v in =0v - 8 pf input/output capacitance c io v io =0v - 10 pf
revision 1.0 april 2000 k6f4008u1d family - 5 - cmos sram data retention characteristics 1. super low power product=2 m a with special handling. item symbol test condition min typ max unit vcc for data retention vdr cs 3 vcc-0.2v 1.5 - 3.3 v data retention current idr vcc=1.5v, cs 3 vcc-0.2v - 0.5 3 1) m a data retention set-up time tsdr see data retention waveform 0 - - ns recovery time trdr trc - - ac operating conditions test conditions (test load and test input/output reference) input pulse level: 0.4 to 2.2v input rising and falling time: 5ns input and output reference voltage: 1.5v output load (see right): c l = 100pf+1ttl c l =30pf+1ttl c l 1) 1. including scope and jig capacitance r 2 2) r 1 2) v tm 3) 2. r 1 =3070 w , r 2 =3150 w 3. v tm =2.8v ac characteristics (vcc=2.7~3.3v, industrial product:t a =-40 to 85 c) parameter list symbol speed bins units 55ns 70ns min max min max read read cycle time t rc 55 - 70 - ns address access time t aa - 55 - 70 ns chip select to output t co - 55 - 70 ns output enable to valid output t oe - 25 - 35 ns chip select to low-z output t lz 10 - 10 - ns output enable to low-z output t olz 5 - 5 - ns chip disable to high-z output t hz 0 20 0 25 ns output disable to high-z output t ohz 0 20 0 25 ns output hold from address change t oh 10 - 10 - ns write write cycle time t wc 55 - 70 - ns chip select to end of write t cw 45 - 60 - ns address set-up time t as 0 - 0 - ns address valid to end of write t aw 45 - 60 - ns write pulse width t wp 40 - 50 - ns write recovery time t wr 0 - 0 - ns write to output high-z t whz 0 20 0 20 ns data to write time overlap t dw 25 - 30 - ns data hold from write time t dh 0 - 0 - ns end write to output low-z t ow 5 - 5 - ns
revision 1.0 april 2000 k6f4008u1d family - 6 - cmos sram address data out previous data valid data valid timming diagrams timing waveform of read cycle(1) (address controlled , cs = oe =v il , we =v ih ) t aa t rc t oh timing waveform of read cycle(2) ( we =v ih ) data valid high-z cs address oe data out notes (read cycle) 1. t hz and t ohz are defined as the time at which the outputs achieve the open circuit conditions and are not referenced to output voltage levels. 2. at any given temperature and voltage condition, t hz (max.) is less than t lz (min.) both for a given device and from device to device interconnection. t oh t aa t olz t lz t ohz t hz t rc t oe t co
revision 1.0 april 2000 k6f4008u1d family - 7 - cmos sram timing waveform of write cycle(1) ( we controlled) address cs t cw(2) t wr(4) timing waveform of write cycle(2) ( cs controlled) address cs t wc t wr(4) t as(3) t wp(1) t dw t dh t ow t whz data undefined data valid we data in data out t dw t dh data valid we data in data out high-z high-z t wc t aw t as(3) t cw(2) t wp(1) t aw notes (write cycle) 1. a write occurs during the overlap of a low cs and a low we . a write begins at the latest transition among cs going low and we going low: a write end at the earliest transition among cs going high and we going high, t wp is measured from the begining of write to the end of write. 2. t cw is measured from the cs going low to end of write. 3. t as is measured from the address valid to the beginning of write. 4. t wr is measured from the end of write to the address change. t wr applied in case a write ends as cs or we going high. data retention wave form cs controlled v cc 2.7v 2.2v v dr cs gnd data retention mode cs 3 v cc - 0.2v t sdr t rdr
revision 1.0 april 2000 k6f4008u1d family - 8 - cmos sram 32 pin smaller thin small outline package type i (0813.4f) 1.00 0.10 0.039 0.004 max 8.40 0.331 1 . 1 0 m a x 0 . 0 0 4 m a x #1 0.50 ( ) 0.020 11.80 0.10 0.465 0.004 0.45 ~0.75 0.018 ~0.030 13.40 0.10 0.528 0.008 + 0.10 0.15 - 0.05 + 0.004 0.006 - 0.002 0~8 + 0.10 0.20 - 0.05 + 0.004 0.008 - 0.002 0.50 0.0197 0.25 ( ) 0.010 min 0.05 0.002 max 1.20 0.047 8 . 0 0 0 . 3 1 5 typ 0.25 0.010 #16 #32 #17 unit: millimeters(inches)
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