HANBit
HMF4M32B8V
Flash-ROM Module 16MByte (4Mx32Bit), 72Pin-SO-DIMM, 3.3V
Design
Part No. HMF4M32B8V
GENERAL DESCRIPTION
The HMF4M32B8V is a high-speed flash read only memory (FROM) module containing 8,388,608words organized in a
x32bit configuration. The module consists of eight 1M x 16 FROM mounted on a 72-pin SO-DIMM type, 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.
Output enable (/OE) and write enable (/WE) can set the memory input and output. The host system can detect a program or
erase operation is complete by observing the Ready Pin, or reading the DQ7(Data # Polling) and DQ6(Toggle) status bits.
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 +3.0V DC power supply and all inputs and outputs are LVTTL-
compatible.
FEATURES
Access time: 70, 80, 90, 120ns
High-density 16MByte design
High-reliability, low-power design
Single + 3.0V
±
0.5V power supply
All in/outputs are LVTTL-compatible
FR4-PCB design
Minimum 10,000,000 write/erase cycle
Sector erases architecture
PIN
1
2
3
4
5
6
7
Symbol
Vss
/RESET
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
Vcc
DQ7
/CE_1L
/CE_2L
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
PIN
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
PIN ASSIGNMENT
Symbol
DQ15
/CE_4L
/CE_3H
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
Vcc
DQ22
DQ23
/CE_1H
/CE_2H
DQ24
DQ25
DQ26
DQ27
Vss
DQ28
PIN
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
Symbol
DQ29
DQ30
DQ31
NC
/CE_4H
/CE_3L
A19
/OE
/WE
A18
A17
A16
A15
A14
A13
A12
A11
A10
Vcc
A9
PIN
61
62
63
64
65
66
67
68
69
70
71
72
Symbol
A8
A7
A6
A5
A4
A3
A2
A1
A0
A20
NC
Vss
OPTIONS
Timing
70ns access
80ns access
90ns access
120ns access
Packages
72-pin SO-DIMM
MARKING
-70
8
9
10
11
-80
12
-90
-120
13
14
15
B
16
17
18
19
20
URL :www.hbe.co.kr
REV.00(October,2003)
1
HANBit Electronics Co., Ltd.
HANBIT [ HANBIT ELECTRONICS CO.,LTD ]
