HMF8M32M8V Datasheet, PDF (1/11 Pages) Hanbit Electronics Co.,Ltd – Flash-ROM Module 32MByte (8Mx32Bit), 72Pin-SIMM, 3.3V Design

HANBit
HMF8M32M8V
Flash-ROM Module 32MByte (8Mx32Bit), 72Pin-SIMM, 3.3V Design
Part No. HMF8M32M8V
GENERAL DESCRIPTION
The HMF8M32M8V 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.
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.
PIN ASSIGNMENT
FEATURES
w Access time : 90, 120ns
w High-density 32MByte design
PIN Symbol PIN Symbol PIN Symbol
1
Vss
25
DQ17
49
/WE
2 /RESET 26
DQ18
50
A18
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
3
DQ0
27
DQ19
51
A17
4
DQ1
28
DQ20
52
A16
5
DQ2
29
DQ21
53
A15
6
DQ3
30
Vcc
54
A14
7
DQ4
31
DQ22
55
A13
8
DQ5
32
DQ23
56
A12
9
DQ6
33
/CE_1H
57
A11
w Minimum 1,000,000 write/erase cycle
10
Vcc
34
/CE_2H
58
A10
w Sectors erase architecture
w Sector group protection
w Temporary sector group unprotection
11
DQ7
35
DQ24
59
Vcc
12 /CE_1L 36
DQ25
60
A9
13 /CE_2L 37
DQ26
61
A8
14
DQ8
38
DQ27
62
A7
OPTIONS
w Timing
MARKING
15
DQ9
39
Vss
63
A6
16
DQ10
40
DQ28
64
A5
17
DQ11
41
DQ29
65
A4
90ns access
-90
18
DQ12
42
DQ30
66
A3
120ns access
-120
19
DQ13
43
DQ31
67
A2
20
DQ14
44
NC
68
A1
w Packages
72-pin SIMM
M
21
DQ15
45
NC
69
A0
22
NC
46
Vcc
70
A20
23
NC
47
A19
71
A21
24
DQ16
48
/OE
72
Vss
URL:www.hbe.co.kr
REV.02(August,2002)
1
HANBit Electronics Co., Ltd.