HANBit
HMF4M32M8V
Flash-ROM Module 16MByte (4Mx32Bit), 72Pin-SIMM, 3.3V Design
Part No. HMF4M32M8V
GENERAL DESCRIPTION
The HMF4M32M8V is a high-speed flash read only memory (FROM) module containing 8,388,608 words organized in a
x32bit configuration. The module consists of eight 2M 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.
Four chip enable inputs, ,(/CE_1L, /CE_1H, /CE_2L, /CE_2H) are used to enable the module
’s
16 bits 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 +3.3V DC power supply and all inputs and outputs are TTL-
compatible.
FEATURES
PIN
w
Access time : 70, 80, 90, 120ns
w
High-density 16MByte design
w
High-reliability, low-power design
w
Single + 3.3V
±
0.3V power supply
w
Easy memory expansion
w
All inputs and outputs are TTL-compatible
w
FR4-PCB design
w
Low profile 72-pin SIMM
w
Minimum 1,000,000 write/erase cycle
w
Sectors erase architecture
w
Sector group protection
w
Temporary sector group unprotection
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Symbol
Vss
/RESET
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
Vcc
DQ7
/CE_1L
/CE_2L
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
NC
NC
DQ16
PIN ASSIGNMENT
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
DQ17
DQ18
DQ19
DQ20
DQ21
Vcc
DQ22
DQ23
/CE_1H
/CE_2H
DQ24
DQ25
DQ26
DQ27
Vss
DQ28
DQ29
DQ30
DQ31
NC
NC
Vcc
A19
/OE
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
/WE
A18
A17
A16
A15
A14
A13
A12
A11
A10
Vcc
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
A20
NC(A21)
Vss
OPTIONS
w
Timing
70ns access
80ns access
90ns access
120ns access
w
Packages
72-pin SIMM
MARKING
-70
-80
-90
-120
15
16
17
18
19
20
21
22
M
23
24
URL:www.hbe.co.kr
REV.02(August,2002).
1
HANBit Electronics Co., Ltd
HANBIT [ HANBIT ELECTRONICS CO.,LTD ]
