HANBit
HMF51232J4
FLASH-ROM MODULE 2MByte (512K x 32-Bit)
–
68-Pin JLCC
Part No. HMF51232J4
GENERAL DESCRIPTION
The HMF51232J4 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 68 -pin, JLCC 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, (/CE1, /CE2, /CE3, /CE4) 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 s upply and all inputs and outputs are TTL-compatible.
FEATURES
w
Access time : 55,70, 90 and 120ns
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High-density 2MByte design
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High-reliability, low-power design
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Single + 5V
±
0.5V power supply
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Easy memory expansion
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All inputs and outputs are
TTL-compatible
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FR4-PCB design
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Low profile 68-pin JLCC
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Minimum 1,000,000 write/erase cycle
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Sector erases architecture
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Sector group protection
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Temporary sector group unprotection
PIN ASSIGNMENT
DQ16
A18
A17
/CE4
/CE3
/CE2
/CE1
NC
Vcc
NC
NC
/OE
/WE
A16
A15
A14
DQ15
DQ17
DQ18
DQ19
Vss
DQ20
DQ21
DQ22
DQ23
Vcc
DQ24
DQ25
DQ26
DQ27
Vss
DQ28
DQ29
DQ30
10 9 8
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
7
6
5
4
3
2
1
68 67 66 65 64 63 62 61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
26
44
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
OPTIONS
w
Timing
55ns access
70ns access
90ns access
120ns access
MARKING
-55
-70
-90
-120
DQ14
DQ13
DQ12
Vss
DQ11
DQ10
DQ9
DQ8
Vcc
DQ7
DQ6
DQ5
DQ4
Vss
DQ3
DQ2
DQ1
w
Packages
68-pin JLCC
J
URL:
www.hbe.co.kr
REV.02(August,2002)
1
DQ31
A6
A5
A4
A3
A2
A1
A0
Vcc
A13
A12
A11
A10
A9
A8
A7
DQ0
68-pin JLCC
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HANBit Electronics Co., Ltd.
HANBIT [ HANBIT ELECTRONICS CO.,LTD ]
