HB56SW872ESN Series,
HB56SW864ESN Series
8,388,608-word
×
72-bit High Density Dynamic RAM Module
8,388,608-word
×
64-bit High Density Dynamic RAM Module
ADE-203-761A (Z)
Rev. 1.0
Mar. 28, 1997
Description
The HB56SW872ESN, HB56SW864ESN belong to 8 Byte DIMM (Dual In-line Memory Module) family,
and have been developed as an optimized main memory solution for 4 and 8 Byte processor applications.
The HB56SW872ESN is a 8M
×
72 dynamic RAM module, mounted 36 pieces of 16-Mbit DRAM
(HM51W16405) sealed in TCP package and 1 pieces of serial EEPROM (24C02) for Presence Detect
(PD). The HB56SW864ESN is a 8M
×
64 dynamic RAM module, mounted 32 pieces of 16-Mbit DRAM
(HM51W16405) sealed in TCP package and 1 pieces of serial EEPROM (24C02) for Presence Detect
(PD). The HB56SW872ESN, HB56SW864ESN offer Extended Data Out (EDO) Page Mode as a high
speed access mode. An outline of the HB56SW872ESN, HB56SW864ESN is 168-pin socket type package
(dual lead out). Therefore, the HB56SW872ESN, HB56SW864ESN make high density mounting possible
without surface mount technology. The HB56SW872ESN, HB56SW864ESN provide common data inputs
and outputs. Decoupling capacitors are mounted beneath each TCP on the module board.
Features
•
168-pin socket type package (Dual lead out)
Lead pitch: 1.27 mm
•
Single 3.3 V (+0.3 V/ –0.15 V) supply
•
JEDEC standard outline unbufferd 8 byte DIMM
•
High speed
Access time: t
RAC
= 60/70 ns (max)
t
CAC
= 15/18 ns (max)
•
Low power dissipation
Active mode: 5.51/4.86 W (max) (HB56SW872ESN)
4.90/4.32 W (max) (HB56SW864ESN)
Standby mode (TTL): 259 mW (max) (HB56SW872ESN)
(TTL): 230 mW (max) (HB56SW864ESN)
(CMOS): 130 mW (max) (HB56SW872ESN)
(CMOS): 115 mW (max) (HB56SW864ESN)
HB56SW872ESN Series, HB56SW864ESN Series
Pin Description
Pin name
A0 to A11
Function
Address input
Row address:
Column address:
Refresh address:
DQ0 to DQ63
RAS0
to
RAS3
CAS0
to
CAS7
WE0, WE2
OE0, OE2
SDA
SCL
SA0 to SA2
CB0 to CB7*
1
V
CC
V
SS
NC
Note:
Data-in/data-out
Row address strobe
Column address strobe
Read/Write enable
Output enable
Serial data out (Bit0 to 7)
Clock for presence detect
Serial address input
Check bit
Power supply
Ground
No connection
1. This function is supported only HB56SW872ESN.
A0 to A11
A0 to A9
A0 to A11
5