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MK31VT864A-8YCN98.07.17O
Semiconductor
MK31VT864A-8YC
8,388,608 Word x 64 Bit SYNCHRONOUS DYNAMIC RAM MODULE (1BANK):
DESCRIPTION
The Oki MK31VT864A-8YC is a fully decoded, 8,388,608 x 64bit synchronous dynamic random access memory composed of eight 64Mb DRAMs (8Mx8) in TSOP packages mounted with decoupling capacitors on a 168-pin glass epoxy Dual-in-Line Package supports any application where high density and large capacity of storage memory are required, like for example PCs or servers.
FEATURES
* * * * * * * * 8-Meg Word x 64-Bit (1Bank 8 Byte) organization 168-pin Dual Inline Memory Module All DQ Pins have 10 Damping Resister Single 3.3V power supply, 0.3V tolerance Input :LVTTL compatible Output :LVTTL compatible Refresh : 4,096 cycles/64 ms Programmable data transfer mode * /CAS latency (2, 3) * Burst length (1, 2, 4, 8, Full page) * Data scramble(sequential, interleave) /CAS before /RAS auto-refresh, Self-refresh capability Serial Presence Detect (SPD) With EEPROM
* *
PRODUCT ORGANIZATION
Product Name Operation Frequency (Max.) 125 MHz Access Time (Max.) tAC2 tAC3 10.0ns 6.0ns
MK31VT864A - 8YC
Note. Specification are subject to change without notice.
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MK31VT864A-8YCN98.07.17O
BLOCK DIAGRAM
CKE0 /CS0 DQMB0 DQ0 DQ7 DQMB1 DQ8 DQ15 DQMB4 DQ32 DQ39 DQMB5 DQ40 DQM /CS CKE DQ0 DQM /CS CKE DQ0 DQM /CS CKE DQ0 DQM /CS CKE DQ0 /CS2 DQMB2 DQ16 DQ23 DQMB3 DQ24 DQ31 DQMB6 DQ48 DQ55 DQMB7 DQ56 DQ63 DQM /CS CKE DQ0 DQM /CS CKE DQ0 DQM /CS CKE DQ0 DQM /CS CKE DQ0
1
DQ7
3
DQ7
2
DQ7 DQ7
4
5
DQ7 DQ7
7
6
DQ47 DQ7 DQ7
8
Serial PD SCL
9
A0 A1 A2 47K SA0 SA1 SA2
SDA WP
1 2
CLK0
3 4
CLK2
5 6
3.3pF
7 8
3.3pF
CLK1 CLK3 10pF
/RAS,/CAS,/WE A0-A15 & BA0,BA1
1
a
Vcc
8
Vss 0.1uF 0.33uF
Two Decoupling Capacitors per SDRAM
Note. The Value of all resistors is 10 expect WP
MODULE
OUTLINE
(Front) (Back)
1 85
10 11 94 95
40 41 124 125
84 168
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MK31VT864A-8YCN98.07.17O
PIN CONFIGURATION
Front side Pin No. Pin name 1 VSS 2 DQ0 3 DQ1 4 DQ2 5 DQ3 6 VCC 7 DQ4 8 DQ5 9 DQ6 10 DQ7 11 DQ8 12 VSS 13 DQ9 14 DQ10 15 DQ11 16 DQ12 17 DQ13 18 VCC 19 DQ14 20 DQ15 21 N.C 22 N.C 23 VSS 24 N.C 25 N.C 26 VCC 27 /WE 28 DQMB0 29 DQMB1 30 /CS0 31 N.C 32 VSS 33 A0 34 A2 35 A4 36 A6 37 A8 38 A10 39 BA1 40 VCC 41 VCC 42 CLK0 Back side Pin No. Pin name 85 VSS 86 DQ32 87 DQ33 88 DQ34 89 DQ35 90 VCC 91 DQ36 92 DQ37 93 DQ38 94 DQ39 95 DQ40 96 VSS 97 DQ41 98 DQ42 99 DQ43 100 DQ44 101 DQ45 102 VCC 103 DQ46 104 DQ47 105 N.C 106 N.C 107 VSS 108 N.C 109 N.C 110 VCC 111 /CAS 112 DQMB4 113 DQMB5 114 N.C 115 /RAS 116 VSS 117 A1 118 A3 119 A5 120 A7 121 A9 122 BA0 123 A11 124 VCC 125 CLK1 126 N.C Front side Pin No. Pin name 43 VSS 44 N.C 45 /CS2 46 DQMB2 47 DQMB3 48 N.C 49 VCC 50 N.C 51 N.C 52 N.C 53 N.C 54 VSS 55 DQ16 56 DQ17 57 DQ18 58 DQ19 59 VCC 60 DQ20 61 N.C 62 N.C 63 N.C 64 VSS 65 DQ21 66 DQ22 67 DQ23 68 VSS 69 DQ24 70 DQ25 71 DQ26 72 DQ27 73 VCC 74 DQ28 75 DQ29 76 DQ30 77 DQ31 78 VSS 79 CLK2 80 N.C 81 WP 82 SDA 83 SCL 84 VCC Back side Pin No. Pin name 127 VSS 128 CKE0 129 N.C 130 DQMB6 131 DQMB7 132 N.C 133 VCC 134 N.C 135 N.C 136 N.C 137 N.C 138 VSS 139 DQ48 140 DQ49 141 DQ50 142 DQ51 143 VCC 144 DQ52 145 N.C 146 N.C 147 N.C 148 VSS 149 DQ53 150 DQ54 151 DQ55 152 VSS 153 DQ56 154 DQ57 155 DQ58 156 DQ59 157 VCC 158 DQ60 159 DQ61 160 DQ62 161 DQ63 162 VSS 163 CLK3 164 N.C 165 SA0 166 SA1 167 SA2 168 VCC
Pin Name VCC VSS CLK# /CS# CKE# A0-A11 BA0, BA1 /RAS /CAS
Function Power Supply (3.3V) Ground (0V) System Clock Chip Select Clock Enable Address Bank Select Address Row Address Strobe Column Address Strobe
Pin Name /WE DQMB# DQ# WP SDA SCL SA# N.C
Function Write Enable Data Input / Output Mask Data Input / Output Write Protect Data I/O for SPD CLK input for SPD Socket Position Address for SPD No Connection
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MK31VT864A-8YCN98.07.17O
SERIAL PRESENCE DETECT
Byte No.
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36-61 62 63 64-71 72 73-90
SPD Hex Value 80 08 04 0C 09 01 40 00 01 80 60 00 80 08 00 01 8F 04 06 01 01 00 0E C0 A0 00 00 1E 10 14 30 10 20 10 20 10 00-00 12 49 41,45,20,20,20,20,20,20 01 / 06
Remark Defines the number of bytes written into SPD memory Total number of bytes of SPD memory Fundamental memory type Number of rows Number of columns Number of module banks Data width of this assembly ... Data width continuation Voltage interface level Cycle time (CL=3) Access time from CLK (CL=3) DIMM configuration type Refresh rate / type Primary SDRAM width Error checking SDRAM width Minimum CLK delay Burst lengths supported Number of banks on each SDRAM /CAS latency /CS latency /WE latency SDRAM module attributes SDRAM device attributes : General Cycle time (CL=2) Access time from CLK (CL=2) Cycle time (CL=1) Access time from CLK (CL=1) Minimum ROW pulse width /RAS to /RAS bank delay /RAS to /CAS delay Minimum /RAS precharge time Density of each bank on module 128 byte
Notes
256 byte SDRAM 12 rows 9 columns 1 bank 64 bits 0 LVTTL CL=3 tCC3=8ns CL=3 tAC3=6ns None Parity Normal / Self x8 tCCD: 1 CLK 1, 2, 4, 8, F 4 banks 2, 3 0 0
CL=2 tCC2=12ns CL=2 tAC2=10ns Not support Not support tRP=30ns tRRD=16ns tRCD=20ns tRAS=48ns 64MB Command and address signal input setup time 2ns Command and address signal input hold time 1ns Data signal input setup time 2ns Data signal input hold time 1ns R.F.U SPD data revision code 1.2 Checksum for byte 0-62 Manufacturer's JEDEC ID code Manufacturing location MK31VT864A-8YC
4D,4B,33,31,56,54,38,36,34, 41,2D,38,59,43,20,20,20,202 20, 20 91, 92 00-00 93-125 64 126 A5 127 FF-FF 128-255
Manufacturer's part number Revision code R.F.U Intel specification frequency Intel specification /CAS latency Unused storage locations
100MHz (CLK0-2, CL=3)
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MK31VT864A-8YCN98.07.17O
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
Rating Voltage on any pin relative to Vss Vcc supply voltage Storage temperature Power dissipation Short circuit current Operating temperature Symbol VIN, VOUT Vcc, VccQ Tstg PD* IOS Topr Value -0.5 to Vcc+0.5 -0.5 to 4.6 - 55 to 125 8 50 0 to 70 Unit V V C W mA C
*: Ta=25C
Recommended Operating Conditions
Parameter Power supply voltage Input high voltage Input low voltage Symbol Vcc, VccQ VIH VIL Min. 3.0 2.0 -0.3 Typ. 3.3 (Voltages referenced to Vss = 0V) Max. Unit 3.6 Vcc+0.3 0.8 V V V
Capacitance
(Vcc=3.3V 0.3V, Ta=25 C f=1MHz) Parameter Symbol Max. Unit Input capacitance (A0-A11, BA0, BA1, /RAS, /CAS, /WE) CIN1 54 pF Input capacitance (/CS0, /CS2) CIN2 34 pF Input capacitance (DQMB0-DQMB7) CIN3 16 pF Input capacitance (CKE0) CIN4 58 pF I/O capacitance (DQ0-DQ63) CI/O 18 pF Input capacitance (CLK0, CLK2) CCLK 50 pF
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MK31VT864A-8YCN98.07.17O
DC CHARACTERISTICS
(Vcc=3.3V 0.3V, Ta = 0 to 70 C) Parameter Output High Voltage Output Low Voltage Input Leakage Current Output Leakage Current Average Power Supply Current (Operating) Symbol
CKE
Condition
Others
Module Spec.
Min. Max.
Unit
Note
VOH VOL ILI ILO ICC1
CKE VIH
IOH = -2.0mA IOL = 2.0mA
-
2.4 -40 -5 -
0.4 40 5 1000
V V A A mA 1, 2 3 2
tCC=min. tRC=min. No Burst
Power Supply Current ICC2 tCC=min. CKE VIH 240 mA (Stand by) Average Power ICC3S tCC=min. CKE VIL Supply Current 48 mA (Clock Suspension) Average Power CKE VIH, ICC3 tCC=min. Supply Current 480 mA /CS VIH (Active Stand by) Power Supply ICC4 tCC=min. CKE VIH 1320 mA Current (Burst) Power Supply tCC=min. ICC5 CKE VIH Current 1480 mA tRC=min. (Auto-Refresh) Average Power ICC6 tCC=min. Supply Current 8 CKE 0.2V mA (Self-Refresh) Average Power ICC7 tCC=min. CKE VIL Supply Current 16 mA (Power down) Notes: 1. Measured with the output open. 2. Address and data can be changed once or not be changed during one cycle. 3. Address and data can be changed once or not be changed during two cycle.
3 1, 2 2
MODE SET ADDRESS KEYS
A9 0 1 Write Burst Write Burst Burst Write Single bit Write A6 0 0 0 0 1 1 1 1 /CAS Latency A5 A4 CL 0 0 Reserved 0 1 Reserved 1 0 2 1 1 3 0 0 Reserved 0 1 Reserved 1 0 Reserved 1 1 Reserved Burst Type A3 BT 0 Sequential 1 Interleave A2 0 0 0 0 1 1 1 1 A1 0 0 1 1 0 0 1 1 Burst Length A0 BT=0 0 Reserved 1 2 0 4 1 8 0 Reserved 1 Reserved 0 Reserved 1 Full page BT=1 Reserved 2 4 8 Reserved Reserved Reserved Reserved
Note:
A7, A8, A10, A11, BA0, BA1 and All should stay "L" during mode set cycle.
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MK31VT864A-8YCN98.07.17O
POWER ON SEQUENCE
1. With inputs in NOP state, turn on the power supply and enter the system clock. 2. After the VCC voltage has reached the specified level, take a pause of 200s or more with the input being NOP. 3. Enter the precharge all bank command. 4. Apply CBR auto-refresh eight or more times. 5. Enter the mode register setting command.
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MK31VT864A-8YCN98.07.17O
AC CHARACTERISTIC
(Vcc=3.3V 0.3V, Ta = 0 to 70 C) NOTE 1, 2 Module Spec. Unit Note Min. Max. 8 12 3 3 2 1 3 3 80 30 48 20 8 16 6 10 8 100,000 64 3 1 1 2 0 0 3 2 2 2 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ms ns ns Cycle Cycle Cycle Cycle Cycle Cycle Cycle Cycle Cycle .
Parameter Clock Cycle Time Access Time from Clock Clock "H" Pulse Time Clock "L" Pulse Time Input Setup Time Input Hold Time Output Low Impedance Time from Clock Output High Impedance Time from Clock Output Hold from Clock /RAS Cycle Time /RAS Precharge Time /RAS Active Time /RAS to /CAS Delay Time Write Recovery Time /RAS to /RAS Bank Active Delay Time Refresh Time Power-down Exit Set-up Time Input Level Transition Time /CAS to /CAS Delay Time (Min) Clock Disable Time from CKE Data Output High Impedance Time from DQMB Data Input Mask Time from DQMB Data Input Time from Write Command Data Output High Inpedance CL=3 Time from Precharge Command CL=2 Active Command Input Time from MODE Write Command Input Time from Output NOTES: 1) 2) 3) 4) 5) CL=3 CL=2 CL=3 CL=2
Symbol
tCC tAC tCH tCL tSI tHI tOLZ tOHZ tOH tRC tRP tRAS tRCD tWR tRRD tREF tPDE tT ICCD ICKE IDOZ IDOD IDWD IROH IMRD tOWD
3, 4 3, 4
3
tSI+1CLK
-
AC measurements assume tT=1ns. The reference level for timing of input signals is 1.4V. This parameter is measured with a load circuit equivalent to 1 TTL load and 50pF (RLoad is 50ohm). An access time is measured at 1.4V. If tT is longer than 1ns, the reference level for timing of input signals are VIH and VIL.
(R)o
50
IONION iA
OUTPUT LOAD
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MK31VT864A-8YCN98.07.17O
FUNCTION TRUTH TABLE (Table1)(1/2)
Current State Idle /CS H L L L L L L L H L L L L L L H L L L L L L L H L L L L L L L H L L L L L L H L L L L L L /RAS X H H H L L L L X H H H L L L X H H H H L L L X H H H H L L L X H H H H L L X H H H H L L /CAS X H H L H H L L X H L L H H L X H H L L H H L X H H L L H H L X H H L L H L X H H L L H L /WE X H L X H L H L X X H L H L X X H L H L H L X X H L H L H L X X H L H L X X X H L H L X X BA X X BA BA BA BA X L X X BA BA BA BA X X X BA BA BA BA BA X X X BA BA BA BA BA X X X BA BA X BA X X X BA BA X BA X ADDR X X X CA RA A10 X OP Code X X CA, A10 CA, A10 RA A10 X X X X CA, A10 CA, A10 RA A10 X X X X CA, A10 CA, A10 RA A10 X X X X CA, A10 X RA, A10 X X X X CA, A10 X RA, A10 X Action NOP NOP 2 ILLEGAL 2 ILLEGAL Row Active 4 NOP 5 Auto-Refresh or Self-Refresh Mode Register write NOP NOP Read Write 2 ILLEGAL Precharge ILLEGAL NOP (Continue Row Active after Burst ends) NOP (Continue Row Active after Burst ends) Burst Stop 3 Term Burst, start new Burst Read 3 Term Burst, start new Burst Write 2 ILLEGAL Term Burst, execute Row Precharge ILLEGAL NOP (Continue Row Active after Burst ends) NOP (Continue Row Active after Burst ends) Burst Stop 3 Term Burst, start new Burst Read 3 Term Burst, start new Burst Write 2 ILLEGAL 3 Term Burst, execute Row Precharge ILLEGAL
NOP (Continue Burst to End and enter Row Precharge) NOP (Continue Burst to End and enter Row Precharge)
Row Active
Read
Write
Read with Auto Precharge
ILLEGAL 2 ILLEGAL ILLEGAL 2 ILLEGAL ILLEGAL
NOP (Continue Burst to End and enter Row Precharge) NOP (Continue Burst to End and enter Row Precharge)
2
Write with Auto Precharge
ILLEGAL 2 ILLEGAL ILLEGAL 2 ILLEGAL ILLEGAL
2
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MK31VT864A-8YCN98.07.17O
FUNCTION TRUTH TABLE (Table1)(2/2)
Current State Precharge /CS H L L L L L L H L L L L L L H L L L L L L H L L L L H L L L L /RAS X H H H L L L X H H H L L L X H H H L L L X H H L L X H H H L /CAS X H H L H H L X H H L H H L X H H L H H L X H L H L X H H L X /WE X H L X H L X X H L X H L X X H L X H L X X X X X X X H L X X BA X X BA BA BA BA X X X BA BA BA BA X X X BA BA BA BA X X X X X X X X X X X ADDR X X X CA RA A10 X X X X CA RA A10 X X X X CA RA A10 X X X X X X X X X X X Action NOP Idle after tRP NOP Idle after tRP 2 ILLEGAL 2 ILLEGAL 2 ILLEGAL 4 NOP ILLEGAL NOP NOP 2 ILLEGAL 2 ILLEGAL 2 ILLEGAL 2 ILLEGAL ILLEGAL NOP Row Active after tRCD NOP Row Active after tRCD 2 ILLEGAL 2 ILLEGAL 2 ILLEGAL 2 ILLEGAL ILLEGAL NOP Idle after tRC NOP Idle after tRC ILLEGAL ILLEGAL ILLEGAL NOP NOP ILLEGAL ILLEGAL ILLEGAL
AE AE
Write Recovery
Row Active
Refresh
AE AE
Auto Resister Access
ABBREVIATIONS
RA = Row Address CA = Column Address BA = Bank Address AP = Auto Precharge NOP = No Operation command
Notes: 1. All inputs will be enabled when CKE is set high for at least 1 cycle prior to the inputs. 2. Illegal to bank in specified state, but may be legal in some cases depending on the state of bank selection. 3. Satisfy the timing of ICCD and tWR to prevent bus contention. 4. NOP to bank precharging or in idle state. Precharges activated bank by BA or A10. 5. Illegal if any bank is not idle.
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MK31VT864A-8YCN98.07.17O
FUNCTION TRUTH TABLE (CKE) (Table2)
Current State(n) Self Refresh CKEn-1 H L L L L L L H L L L L L L H H H H H H H H L H H L L CKEn X H H H H H L X H H H H H L H L L L L L L L L H L H L /CS X H L L L L X X H L L L L X X H L L L L L L X X X X X /RAS X X H H H L X X X H H H X X X X H H H L L L X X X X X /CAS X X H H L X X X X H H L X X X X H H L H L L X X X X X /WE X X H L X X X X X H L X X X X X H L X L H L X X X X X ADDR X X X X X X X X X X X X X X X X X X X X X X X X X X X Action INVALID Exit Self Refresh ABI Exit Self Refresh ABI ILLEGAL ILLEGAL ILLEGAL NOP (Maintain Self Refresh) INVALID Exit Power Down ABI Exit Power Down ABI ILLEGAL ILLEGAL 6 ILLEGAL NOP (Continue power down mode) Refer to Table 1 Enter Power Down Enter Power Down ILLEGAL ILLEGAL ILLEGAL Enter Self Refresh ILLEGAL NOP Refer to Operations in Table 1 Begin Clock Suspend Next Cycle Enable Clock of Next Cycle Continue Clock Suspension
AE AE
Power Down
AE AE
All Banks idle (ABI)
6
Any State Other than Listed Above
Notes:
6. Power-down and self refresh can be entered only when all the banks are in an idle state.
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