HANBit
HMF51232M4D
FLASH-ROM MODULE 2MByte (512K x 32-Bit)
Part No. HMF51232M4D
GENERAL DESCRIPTION
The HMF51232M4D is a high-speed flash read only memory (FROM) module containing 524,288 words organized in a x32bit
configuration. The module consists of four 512Kx 8 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_UU2, /CE_UM2, /CE_LM2, /CE_LL2) are used to enable the module’s 4 bytes 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 +5V DC power supply and all inputs and outputs are TTL-compatible.
PIN ASSIGNMENT
FEATURES
PIN SYMBOL
PIN SYMBOL PIN
SYMBOL
w Access time : 55,70, 90 and 120ns
w High-density 2MByte design
w High-reliability, low-power design
w Single + 5V ± 0.5V power supply
w Easy memory expansion
1
2
Vss
A3
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Vcc
DQ8
DQ9
DQ10
NC
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
DQ17
DQ18
DQ22
DQ21
DQ20
DQ19
Vcc
3
A2
4
A1
5
A0
wAll inputs and outputs are TTL- compatible
w FR4-PCB design
6
Vcc
Vcc
7
A11
/OE
A10
Vcc
/CE_LM2
DQ15
DQ14
DQ13
DQ12
DQ11
A18
w Low profile 72-pin SIMM
8
A15
w Minimum 1,000,000 write/erase cycle
w Sector erases architecture
9
A12
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
A7
w Sector group protection
NC
Vcc
w Temporary sector group unprotection
A8
/CE_LL2
DQ7
DQ0
DQ1
DQ2
DQ6
DQ5
DQ4
DQ3
/WE
A17
A14
A13
w Part Identification
A9
A16
DQ24
DQ25
DQ26
NC
HMF51232M4D : Gold Plate Lead
Vss
A6
Vcc
OPTIONS
w Timing
MARKING
A5
/CE_UU2
DQ31
DQ30
DQ29
DQ28
DQ27
Vss
A4
Vcc
55ns access
70ns access
90ns access
120ns access
w Package
- 55
- 70
NC
/CE_UM2
DQ23
- 90
- 120
DQ16
72-PIN SIMM
TOP VIEW
72-pin SIMM
M
FUNCTIONAL BLOCK DIAGRAM
1
URL: www.hbe.co.kr
REV.02(August,2002)
HANBit Electronics co., Ltd.