HMF4M32M8V Datasheet, PDF (1/11 Pages) Hanbit Electronics Co.,Ltd – Flash-ROM Module 16MByte (4Mx32Bit), 72Pin-SIMM, 3.3V Design

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
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
OPTIONS
w Timing
70ns access
80ns access
90ns access
120ns access
w Packages
72-pin SIMM
MARKING
-70
-80
-90
-120
M
PIN ASSIGNMENT
PIN Symbol PIN
1
Vss
25
2 /RESET 26
3
DQ0
27
4
DQ1
28
5
DQ2
29
6
DQ3
30
7
DQ4
31
8
DQ5
32
9
DQ6
33
10
Vcc
34
11
DQ7
35
12 /CE_1L 36
13 /CE_2L 37
14
DQ8
38
15
DQ9
39
16
DQ10
40
17
DQ11
41
18
DQ12
42
19
DQ13
43
20
DQ14
44
21
DQ15
45
22
NC
46
23
NC
47
24
DQ16
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 Symbol
49
/WE
50
A18
51
A17
52
A16
53
A15
54
A14
55
A13
56
A12
57
A11
58
A10
59
Vcc
60
A9
61
A8
62
A7
63
A6
64
A5
65
A4
66
A3
67
A2
68
A1
69
A0
70
A20
71 NC(A21)
72
Vss
URL:www.hbe.co.kr
REV.02(August,2002).
1
HANBit Electronics Co., Ltd