The MC-458CA721ESA and MC-458CA721PSA are 8,388,608 words by 72 bits synchronous dynamic RAM module
µ
(Small Outline DIMM) on which 5 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 72 bits organization (ECC type)
• Clock frequency and access time from CLK
Part number/CAS latencyClock frequency (MAX.)Access time from CLK (MAX.)
MC-458CA721ESA-A80CL = 3125 MHz6 ns
CL = 2100 MHz6 ns
MC-458CA721ESA-A10CL = 3100 MHz6 ns
CL = 277 MHz7 ns
MC-458CA721PSA-A80CL = 3125 MHz6 ns
CL = 2100 MHz6 ns
MC-458CA721PSA-A10CL = 3100 MHz6 ns
CL = 277 MHz7 ns
PD45128163 are assembled.
• 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, BA1 (Bank Select)
• Programmable burst-length (1, 2, 4, 8 and Full Page)
•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
5W
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)
°°°°
ParameterSymbolTes t conditionMI N.TYP .MAX.Unit
CC
IH
IL
A
I1
A0 - A11, BA0(A13), BA1(A12),
3.03.33.6V
2.0V
CC +
0.3V
–0.3+0.8V
070
C
°
1734pF
/RAS, /CAS, /WE
I2
C
C
C
C
CLK02337
I3
CKE01830
I4
/CS01830
I5
DQMB0 - DQMB7516.5
I/O
DQ0 - DQ63, CB0 - CB7513pF
Data Sheet M14494EJ2V0DS00
5
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