HANBit
HMF1M32M8G
FLASH-ROM MODULE 4MByte (1M x 32-Bit), 72pin-SIMM, 5V
Part No. HMF1M32M8G
GENERAL DESCRIPTION
The HMF1M32M8G is a high-speed flash read only memory (FROM) module containing 1,048,576 words organized in a
x32bit configuration. The module consists of eight 512K 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.
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. 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.
PIN ASSIGNMENT
FEATURES
w Access time: 55, 70, 90 and 120ns
w High-density 4MByte design
PIN SYMBOL PIN
SYMBOL
PIN SYMBOL
1
2
Vss
A3
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Vcc
DQ8
DQ9
DQ10
/CE_LM2
Vcc
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
DQ17
DQ18
DQ22
DQ21
DQ20
DQ19
Vcc
w High-reliability, low-power design
3
A2
w Single + 5V 0.5V power supply
±
4
A1
w Easy memory expansion
5
A0
w All inputs and outputs are TTL-compatible
w FR4-PCB design
6
Vcc
7
A11
/CE_LM1
DQ15
DQ14
DQ13
DQ12
DQ11
A18
8
/OE
A15
w Low profile 72-pin SIMM
9
A10
A12
w Minimum 1,000,000 write/erase cycle
w Sector erases architecture
w Sector group protection
10
11
12
13
14
15
16
17
18
19
20
Vcc
A7
Vcc
/CE_LL2
/CE_LL1
DQ7
DQ0
DQ1
DQ2
DQ6
DQ5
DQ4
DQ3
A8
A9
w Temporary sector group unprotection
A16
DQ24
DQ25
DQ26
/CE_UU2
/CE_UU1
DQ31
DQ30
Vss
OPTIONS
w Timing
MARKING
A6
Vcc
A5
55ns access
70ns access
90ns access
120ns access
w Packages
72-pin SIMM
-55
-70
A4
Vcc
-90
21
/WE
45
69
DQ29
/CE_UM2
-120
22
23
24
A17
A14
A13
46
47
48
70
71
72
DQ28
DQ27
Vss
/CE_UM1
DQ23
M
DQ16
72-PIN SIMM
TOP VIEW
1
URL : www.hbe.co.kr
REV.02(August,2002)
HANBit Electronics Co., Ltd.