HANBit
HMD8M32M16
32Mbyte(8Mx32) 72-pin F/P Mode 2K Ref. SIMM Design 5V
Part No. HMD8M32M16, HMD8M32M16G
GENERAL DESCRIPTION
The HMD8M32M16 is a 8M x 32 bit dynamic RAM high density memory module. The module consists of sixteen CMOS
4M x 4bit DRAMs in 24-pin SOJ packages mounted on a 72-pin, double-sided, FR-4-printed circuit board. A 0.1 or
0.22uF decoupling capacitor is mounted on the printed circuit board for each DRAM components. The module is a single
In-line Memory Module with edge connections and is intended for mounting in to 72-pin edge connector sockets. All
module components may be powered from a single 5V DC power supply and all inputs and outputs are TTL-compatible.
PIN ASSIGNMENT
FEATURES
w Part Identification
PIN
1
SYMBOL
Vss
PIN
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
SYMBOL
A10
PIN
37
38
39
40
41
42
43
44
45
46
SYMBOL
NC
PIN
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
SYMBOL
DQ11
DQ27
DQ12
DQ28
Vcc
HMD8M32M16--2048 Cycles/32ms Ref, Solder
HMD8M32M16G--2048 Cycles/32ms Ref, Gold
w Access times : 50, 60ns
2
DQ0
DQ16
DQ1
DQ17
DQ2
DQ18
DQ3
DQ19
Vcc
DQ4
NC
3
DQ20
DQ5
Vss
w High-density 32MByte design
w Single + 5V ±0.5V power supply
w JEDEC standard pinout
4
/CAS0
/CAS2
/CAS3
/CAS1
/RAS0
/RAS1
NC
5
DQ21
DQ6
6
DQ29
DQ13
DQ30
DQ14
DQ31
DQ15
NC
w FP(Fast Page) mode operation
w TTL compatible inputs and outputs
w FR4-PCB design
7
DQ22
DQ7
8
9
DQ23
A7
10
11
12
13
14
15
16
17
18
NC
NC(A11) 47
/W
OPTIONS
w Timing
MARKING
A0
Vcc
A8
48
49
50
51
52
53
54
NC
A1
DQ8
PD1
50ns access
60ns access
w Packages
72-pin SIMM
-5
-6
A2
A9
DQ24
DQ9
PD2
A3
/RAS1
/RAS0
NC
PD3
A4
DQ25
DQ10
DQ26
PD4
M
A5
NC
A6
NC
Vss
PERFORMANCE RANGE
SIMM TOP VIEW
SPEED
tRAC
50ns
60ns
tCAC
13ns
15ns
tRC
90ns
110ns
tPC
-5
-6
35ns
40ns
Note: A11 is not used for HMD8M32M16
PIN NAMES
Pin Name
A0-A10
Function
Pin Name
Function
Row Address Strobe
Pin Name
Vss
Function
Address Input(2K Ref)
Address Input(4K Ref)
Data In/Out
/RAS0, /RAS1
Ground
A0-A11
/CAS0 - /CAS3 Column Address Strobe
PD1 - PD4 Presence Detect
NC
No Connection
Power(+5V)
DQ0-DQ31
/W
Vcc
Read/Write Input
URL:www.hbe.co.kr
REV.1.0 (August.2002)
HANBit Electronics Co.,Ltd.
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