HMF8M32M8A Datasheet, PDF (1/12 Pages) Hanbit Electronics Co.,Ltd – FLASH-ROM MODULE 32MByte (8M x 32Bit), 72-Pin SIMM, 5V

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
PIN ASSIGNMENT
HMF8M32M8A : 32Mbyte, 72-pin SIMM, Gold
PIN SYMBOL PIN SYMBOL PIN SYMBOL
1
Vss
25
A20
49
DQ17
wAccess time : 55, 70, 90
w High-density 32MByte design
w High-reliability, low-power design
2
A3
26
DQ8
50
DQ18
3
A2
27
DQ9
51
DQ22
4
A1
28
DQ10
52
DQ21
5
A0
29 /CE-LM2 53
DQ20
w Single + 5V ± 0.5V power supply
w Easy memory expansion
w All inputs and outputs are TTL-compatible
w FR4-PCB design
6
Vcc
30
Vcc
54
7
A11
31 /CE-LM1 55
8
/OE
32
DQ15
56
9
A10
33
DQ14
57
10 /RESET 34
DQ13
58
DQ19
A19
A15
A12
A7
w Low profile 72-pin SIMM
w Minimum 100,000 write/erase cycle
w Sectors erase architecture
w Sector group protection
w Temporary sector group unprotection
w The used device is Am29F032B or M29F032D
11 /CE-LL2 35
12 /CE-LL1 36
13
DQ7
37
14
DQ0
38
15
DQ1
39
16
DQ2
40
17
DQ6
41
18
DQ5
42
DQ12
DQ11
A18
A16
Vss
A6
A21
A5
59
Vcc
60
A8
61
A9
62
DQ24
63
DQ25
64
DQ26
65 /CE-UU2
66 /CE-UU1
OPTIONS
w Timing
MARKING
19
DQ4
43
A4
67
DQ31
20
DQ3
44
Vcc
68
DQ30
21
/WE
45 /CE-UM2 69
DQ29
55ns access
-55
22
A17
46 /CE-UM1 70
DQ28
70ns access
-70
90ns access
-90
23
A14
47
DQ23
71
DQ27
24
A13
48
DQ16
72
Vss
w Packages
72-pin SIMM
M
72-PIN SIMM
TOP VIEW
URL: www.hbe.co.kr
REV.02(August,2002)
HANBit Electronics Co., Ltd.
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