HANBit
HMF8M32M8A
FLASH-ROM MODULE 32MByte (8M x 32Bit), 72-Pin SIMM, 5V
Part No. HMF8M32M8A
GENERAL DESCRIPTION
The HMF8M32M8A is a high-speed flash read only memory (FROM) module containing 16,777,216 words organized in a
x32bit configuration. The module consists of eight 4M x 8bit FROM mounted on a 72-pin, double-sided, FR4-printed circuit board.
Commands are written to the command register using standard microprocessor write timings.
Register contents serve as input to an internal state-machine, which controls the erase and programming circuitry. Write cycles
also internally latch addresses and data needed for the programming and erase operations. Reading data out of the device is
similar to reading from 12.0V flash or EPROM devices.
Eight chip enable inputs, (/CE_UU1, /CE_UM1, /CE_LM1, /CE_LL1, /CE_UU2, /CE_UM2, /CE_LM2, CE_LL2) are used to
enable the module’s 4 bytes independently. Outputs enable (/OE) and write enable (/WE) can set the memory input and
output.When FROM module is disable condition the module is becoming power standby mode, system designer can get low-
power design. All module components may be powered from a single +5V DC power supply and all inputs and outputs are TTL-
compatible.
FEATURES
w
Part Identifications
HMF8M32M8A : 32Mbyte, 72-pin SIMM, Gold
PIN
1
wAccess
time : 55, 70, 90
w
High-density 32MByte design
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High-reliability, low-power design
w
Single + 5V
±
0.5V power supply
w
Easy memory expansion
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All inputs and outputs are TTL-compatible
w
FR4-PCB design
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Low profile 72-pin SIMM
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Minimum 100,000 write/erase cycle
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Sectors erase architecture
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Sector group protection
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Temporary sector group unprotection
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The used device is Am29F032B or M29F032D
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
-55
-70
-90
22
23
24
PIN ASSIGNMENT
SYMBOL
Vss
A3
A2
A1
A0
Vcc
A11
/OE
A10
/RESET
/CE-LL2
/CE-LL1
DQ7
DQ0
DQ1
DQ2
DQ6
DQ5
DQ4
DQ3
/WE
A17
A14
A13
PIN
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
SYMBOL
A20
DQ8
DQ9
DQ10
/CE-LM2
Vcc
/CE-LM1
DQ15
DQ14
DQ13
DQ12
DQ11
A18
A16
Vss
A6
A21
A5
A4
Vcc
/CE-UM2
/CE-UM1
DQ23
DQ16
PIN
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
SYMBOL
DQ17
DQ18
DQ22
DQ21
DQ20
DQ19
A19
A15
A12
A7
Vcc
A8
A9
DQ24
DQ25
DQ26
/CE-UU2
/CE-UU1
DQ31
DQ30
DQ29
DQ28
DQ27
Vss
OPTIONS
w
Timing
55ns access
70ns access
90ns access
w
Packages
MARKING
72-PIN SIMM
72-pin SIMM
M
TOP VIEW
URL: www.hbe.co.kr
REV.02(August,2002)
1
HANBit Electronics Co., Ltd.
HANBIT [ HANBIT ELECTRONICS CO.,LTD ]
