HANBit
HMF8M8M4G
FLASH-ROM MODULE 8MByte (8M x 8-Bit)
Part No. HMF8M8M4G
GENERAL DESCRIPTION
The HMF8M8M4G is a high-speed flash read only memory (FROM) module containing 8,388,608 words organized in a x8bit
configuration. The module consists of four 2M x 8 FROM mounted on a 72-pin, single-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.
Four chip enable inputs, (/CE1, /CE2, /CE3, /CE4) are used to enable the module’s 4 bytes independently. Output 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
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Part identification
- HMF8M8M4
(Solder Plating Lead)
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
- 70
- 90
-120
19
20
21
22
23
72-pin SIMM
M
24
Vss
/CE0
/CE1
/CE2
/CE3
Vcc
/WE
/OE
PIN ASSIGNMENT
SYMBOL
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
A15
A16
A17
A18
A19
Vcc
A20
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
Vss
DQ7
/RY_BY0
/RY_BY1
/RY_BY2
Vcc
/RY_BY3
NC
NC
NC
72-PIN SIMM
TOP VIEW
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
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Vcc
NC
NC
NC
Vss
NC
NC
NC
NC
NC
NC
NC
NC
Vss
- HMF8M8M4G (Gold Plating Lead)
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Access time : 70, 90, 120ns
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High-density 8MByte design
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High-reliability, low-power design
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Single + 5V
±
0.5V power supply
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Easy memory expansion
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All inputs and outputs are TTL-compatible
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FR4-PCB design
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Low profile 72-pin SIMM
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Minimum 1,000,000 write/erase cycle
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Flexible sector architecture
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Embedded algorithms
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Erase suspend / Erase resume
/RESET
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
OPTIONS
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Timing
70ns access
90ns access
120ns access
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Packages
MARKING
URL:
www.hbe.co.kr
REV.02(August,2002)
1
HANBit Electronics Co., Ltd.
HANBIT [ HANBIT ELECTRONICS CO.,LTD ]
