HMF1M32M4V Datasheet, PDF (1/11 Pages) Hanbit Electronics Co.,Ltd – Flash-ROM Module 4MByte (1Mx32Bit), 72Pin-SIMM, 3.3V Design

HANBit
HMF1M32M4V
Flash-ROM Module 4MByte (1Mx32Bit), 72Pin-SIMM, 3.3V Design
Part No. HMF1M32M4V
GENERAL DESCRIPTION
The HMF1M32M4V is a high-speed flash read only memory (FROM) module containing 2,097,152 words organized in a
x32bit configuration. The module consists of four 1M x 8bit 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, (/CE_1L, /CE_1H) are used to enable the module ’s 8 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
PIN ASSIGNMENT
PIN Symbol PIN Symbol PIN Symbol
1
Vss
25
DQ17
49
/WE
w High-density 4MByte 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
2
/RESET
26
DQ18
50
A18
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
10
Vcc
34
NC(/CE_2H
)
58
A10
11
DQ7
35
DQ24
59
Vcc
w Sector group protection
w Temporary sector group unprotection
12
/CE_1L
36
DQ25
60
A9
13 NC(/CE_2L) 37
DQ26
61
A8
14
DQ8
38
DQ27
62
A7
OPTIONS
w Timing
70ns access
MARKING
-70
15
DQ9
39
Vss
63
A6
16
DQ10
40
DQ28
64
A5
17
DQ11
41
DQ29
65
A4
18
DQ12
42
DQ30
66
A3
80ns access
-80
19
DQ13
43
DQ31
67
A2
90ns access
120ns access
w Packages
72-pin SIMM
-90
-120
M
20
DQ14
44
NC
68
A1
21
DQ15
45
NC
69
A0
22
NC
46
Vcc
70 NC(A20)
23
NC
47
A19
71 NC(A21)
24
DQ16
48
/OE
72
Vss
URL:www.hbe.co.kr
REV.02 (August,2002)
1
HANBit Electronics Co., Ltd.