HMD1M32M2GL Datasheet, PDF (1/7 Pages) Hanbit Electronics Co.,Ltd – 4Mbyte(1Mx32) Fast Page Mode, 1K Refresh, 72Pin SIMM, 5V Design

HANBit
HMD1M32M2GL
4Mbyte(1Mx32) Fast Page Mode, 1K Refresh, 72Pin SIMM, 5V
Design
Part No. HMD1M32M2GL
DESCRIPTION
The HMD1M32M2GL is an 1M x 32 bits Dynamic RAM MODULE which is assembled 2 pieces of 1M x 16bit DRAMs in 42 pin
SOJ package on single sides the printed circuit board with decoupling capacitors. The HMD1M32M2GL is optimized for
application to the systems, which are required high density and large capacity such as main memory of the computers and an
image memory systems, and to the others, which are, requested compact size.
The HMD1M32M2GL provides common data and outputs.
Features
w 72 pins Single In-Line Package
w Fast Page Mode Capability
w Single +5V± 0.5V power supply
w Fast Access Time & Cycle Time
tRAC tCAC tRC tPC
HMD1M32M2G-5 50 15 90 35
HMD1M32M2G-6 60 15 110 40
w Low Power
w /RAS Only Refresh, /CAS before /RAS Refresh,
Hidden Refresh Capability
w All inputs and outputs TTL Compatible
w 1,024 Refresh Cycles/16ms
PIN DESCRIPTION
PIN
FUNCTION
PIN
A0 – A9 ^{Address Inputs}
/WE
DQ0 –
Data
Input/Output
Vcc
DQ31
/RAS
Row Address
Strobe
Vss
/CAS
Column
Address Strobe
NC
Data Output
/OE
Enable
FUNCTION
Read/Write
Enable
Power (+5V)
Ground
No
Connection
PIN ASSIGNMENT
PIN SYMBOL PIN
SYMBO
L
PIN
SYMBOL
1
Vss
25 DQ22 49
DQ8
2
DQ0
26
DQ7
50
DQ24
3
DQ16 27 DQ23 51
DQ9
4
DQ1
28
A8
52
DQ25
5
DQ17
29 NC(A10) 53
DQ10
6
DQ2
30
Vcc
54
DQ26
7
DQ18
31 /WE2 55
DQ11
8
DQ3
32
NC
56
DQ27
9
DQ19 33
Vcc
57
DQ12
10
Vcc
34
/RAS 58
DQ28
11 /WEO 35
Vcc
59
/WE3
12
A0
36
NC
60
DQ29
13
A1
37
NC
61
DQ13
14
A2
38
/OE
62
DQ30
15
A3
39
Vss
63
DQ14
16
A4
40
/CAS 64
DQ31
17
A5
41
Vcc
65
DQ15
18
A6
42
NC
66
Vcc
19
A7
43
NC
67
NC
20
DQ4
44
NC
68
NC
21 DQ20 45
A9
69
Vss
22
DQ5
46 NC(A11) 70
NC
23 DQ21 47 /WE1 71
Vss
24
DQ6
48
Vcc
72
Vss
URL:www.hbe.co.kr
REV.1.0 (August.2002)
1
HANBit Electronics Co., Ltd.