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
PIN ASSIGNMENT
Access time: 70, 80, 90, 120ns
PIN Symbol PIN Symbol PIN
Symbol
DQ29
DQ30
DQ31
NC
PIN
61
62
63
64
65
66
67
68
69
70
71
72
Symbol
A8
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
1
2
Vss
/RESET
DQ0
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
DQ15
/CE_4L
/CE_3H
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
Vcc
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
A7
3
A6
4
DQ1
A5
5
DQ2
/CE_4H
/CE_3L
A19
A4
Minimum 10,000,000 write/erase cycle
Sector erases architecture
6
DQ3
A3
7
DQ4
A2
8
DQ5
/OE
A1
OPTIONS
Timing
MARKING
9
DQ6
/WE
A0
10
11
12
13
14
15
16
17
18
19
20
Vcc
A18
A20
NC
Vss
70ns access
80ns access
90ns access
120ns access
Packages
72-pin SO-DIMM
-70
-80
-90
-120
DQ7
DQ22
DQ23
/CE_1H
/CE_2H
DQ24
DQ25
DQ26
DQ27
Vss
A17
/CE_1L
/CE_2L
DQ8
A16
A15
A14
DQ9
A13
B
DQ10
DQ11
DQ12
DQ13
DQ14
A12
A11
A10
Vcc
DQ28
A9
1
URL :www.hbe.co.kr
HANBit Electronics Co., Ltd.
REV.00(October,2003)