HMD4M72D18EG Datasheet, PDF (1/16 Pages) Hanbit Electronics Co.,Ltd – 32Mbyte(4Mx72) EDO Mode 4K Ref. 5V, DIMM 168 pin

HANBit
HMD4M72D18EG
32Mbyte(4Mx72) EDO Mode 4K Ref. 5V, DIMM 168 pin
Part No. HMD4M72D18EG-6
GENERAL DESCRIPTION
The HMD4M72D18EG is a 4Mx72bits Dynamic RAM high density memory module. The HMD4M72D18EG consists of
eighteen CMOS 4Mx4bits DRAMs in SOJ/TSOPІІ 400mil packages mounted on a 168-pin glass-epoxy substrate. A 0.1 or
0.22uF decoupling capacitor is mounted on the printed circuit board for each DRAM. The HMD4M72D18EG is a Dual In-
line Memory Module and is intended for mounting into 168 pin edge connector sockets
FEATURES
PERFORMANCE RANGE
w Part Identification
HMD4M72D18EG --- 4KCycles/64ms Ref, Gold Plate Lead
w High-density 32MByte design
w New JEDEC standard proposal without buffer
w CAS-before-RAS Refresh capability
w RAS-only and Hidden refresh capability
w Single +5± 0.5V power supply
w EDO mode operation.
w LVTTL compatible inputs and outputs
w FR4-PCB design
w Access times : 50, 60ns
SPEED
-5
-6
w Timing
50ns access
60ns access
w Packages
168-pin DIMM
t_RAC
50ns
60ns
t_CAC
15ns
17ns
-5
-6
D
t_RC
84ns
104ns
t_HPC
20ns
25ns
PIN NAMES
Pin Name
Function
Pin Name
Function
Pin Name
Function
A0-A11 Address Input (4k ref) /RAS0, /RAS2 Row Address Strobe
Vss
Ground
A0-A12 Address Input (8k ref)
/CAS0 -
Column Address Strobe
NC
No Connection
/CAS7
/W0,/W2 Read/Write Enable
SCL
Serial Clock
Vcc
Power (+5V)
/OE0,/OE2 Output Enable
DU
Don't use
SDA
Serial Address /Data
SA0 – SA2 Address in EEPROM
CB0 - CB7 Check Bit
I/O
DQ0-DQ63 Data In/Out
URL:www.hbe.co.kr
REV.1.0 (August.2002)
-1-
HANBit Electronics Co.,Ltd.