The MC-458CB64ESB and MC-458CB64PSB are 8,388,608 words by 64 bits synchronous dynamic RAM module
µ
(Small Outline DIMM) on which 4 pieces of 128M SDRAM:
These modules provide high density and large quantities of memory in a small space without utilizing the surfacemounting technology on the printed circuit board.
Decoupling capacitors are mounted on power supply line for noise reduction.
Features
• 8,388,608 words by 64 bits organization
• Clock frequency and access time from CLK
Part number/CAS LatencyClock frequency
MC-458CB64ESB-A10BCL = 3100 MHz7 ns
CL = 267 MHz8 ns
MC-458CB64PSB-A10BCL = 3100 MHz7 ns
CL = 267 MHz8 ns
PD45128163 are assembled.
Access time from CLK
(MAX.)(MIN.)
• Fully Synchronous Dynamic RAM, with all signals referenced to a positive clock edge
• Pulsed interface
• Possible to assert random column address in every cycle
• Quad internal banks controlled by BA0 and BA1 (Bank Select)
• Programmable burst-length (1, 2, 4, 8 and Full Page)
/
• Programmable wrap sequence (Sequential
• Programmable /CAS latency (2, 3)
• Automatic precharge and controlled precharge
• CBR (Auto) refresh and self refresh
• Single +3.3
• LVTTL compatible
• 4,096 refresh cycles/64
• Burst termination by Burst Stop command and Precharge command
•After power up, wait more than 100 µs and then, execute power on sequence and CBR (Auto) refresh before proper
device operation is achieved.
Absolute Maximum Ratings
ParameterSymbolConditionRatingUnit
Voltage on power supply pin relative to GNDV
Voltage on input pin relative to GNDV
Short circuit output c urrentI
Power dissipationP
Operating ambient tem peratureT
Storage temperatureT
CautionExposing 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 specification. Exposure to Absolute Maximum Rating
conditions for extended periods may affect device reliability.
CC
T
O
D
A
stg
–0.5 to +4.6V
–0.5 to +4.6V
50mA
4W
0 to +70
–55 to +125
C
°
C
°
Recommended Operating Conditions
ParameterSymbolConditionMIN.TYP.MAX.Unit
Supply voltageV
High level input voltageV
Low level input voltageV
Operating ambient tem peratureT
Capacitance (TA = 25
Input capacitanceC
Data input/output capaci t anceC
C, f = 1 MHz)
°°°°
ParameterSymbolTest conditionMI N.TYP.MAX.Unit
CC
IH
IL
A
I1
A0 - A11, BA0 (A13), BA1 (A12),
3.03.33.6V
2.0V
–0.3+ 0.8V
070
/RAS, /CAS, /WE
I2
C
CLK030
I3
C
CKE030
I4
C
/CS030
I5
C
DQMB0 -DQMB710
I/O
DQ0 - DQ6310pF
CC +
0.3V
30pF
C
°
Data Sheet M12263EJAV0DS00
5
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