HANBiT
HMD4M64D16V
32Mbyte(4Mx64) Fast Page Mode 4K Ref. 3.3V, DIMM 168 pin
Part No. HMD4M64D16V
GENERAL DESCRIPTION
The HMD4M64D16V is a 4Mx64bits Dynamic RAM high density memory module. The HMD4M64D16V consists of
sixteen CMOS 4Mx4bits DRAMs in SOJ/TSOP 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 HMD4M64D16EV is a Dual In-
line Memory Module and is intended for mounting into 168 pin edge connector sockets
FEATURES
PERFORMANCE RANGE
SPEED
tRAC
50ns
60ns
tCAC
15ns
17ns
tRC
tHPC
20ns
25ns
w Part Identification
-5
-6
84ns
104ns
HMD4M64D16V --- 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 +3.3± 0.3V power supply
w Fast Page mode operation.
w Timing
50ns access
60ns access
w Packages
-5
-6
w LVTTL compatible inputs and outputs
w FR4-PCB design
w Access times : 50, 60ns
168-pin DIMM
D
PIN NAMES
Pin Name
A0-A11
Function
Pin Name
Function
Pin Name
Function
Ground
Address Input (4k ref)
Address Input (8k ref)
/RAS0, /RAS2 Row Address Strobe
Vss
NC
A0-A12
/CAS0 - /CAS7 Column
Strobe
Address
No Connection
/W0,/W2
Read/Write Enable
Output Enable
SCL
DU
Serial Clock
Vcc
Power (+3.3V)
/OE0,/OE2
Don't use
SDA
Serial Address /Data
I/O
SA0 – SA2
Address in EEPROM
CB0 - CB7
Check Bit
DQ0-DQ63 Data In/Out
l
When Used to Parity, SA0-SA2,SCL,CB0-CB7,SDA is setting. This Model not used.
URL:www.hbe.co.kr
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HANBit Electronics Co.,Ltd.
REV.1.0.(August.2002)