HMF1M32M8S Datasheet, PDF (1/10 Pages) Hanbit Electronics Co.,Ltd – FLASH-ROM MODULE 4MByte (1M x 32-Bit), 72pin-SIMM, 5V

HANBit
HMF1M32M8S
FLASH-ROM MODULE 4MByte (1M x 32-Bit), 72pin-SIMM, 5V
Part No. HMF1M32M8S (Switching for write enable/disable)
GENERAL DESCRIPTION
The HMF1M32M8S is a high-speed flash read only memory (FROM) module containing 1,048,576 words organized in a
x32bit configuration. The module consists of eight 512K x 8 FROM mounted on a 72 -pin, both-sided, FR4-printed circuit
board.In order to write control, the HMF1M32M8S provides Write Enable and Write Disable selection by SMT switch.
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. Eight chip enable inputs, (/CE-UU1, /CE_UM1, /CE_LM1,
/CE_LL1, /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
FEATURES
w Access time: 70, 90 and 120ns
wSwitching for write enable and disable.
w High-density 4MByte design
w High-reliability, low-power design
w Single + 5V ± 0.5V 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 100,000 write/erase cycle
w Sector erases architecture
w Sector group protection
w Temporary sector group unprotection
OPTIONS
w Timing
70ns access
90ns access
120ns access
w Packages
72-pin SIMM
MARKING
-70
-90
-120
M
PIN ASSIGNMENT
PIN SYMBOL PIN SYMBOL PIN SYMBOL PIN SYMBOL
1
VSS
19
DQ4
37
A18
55
VCC
2
A3
20
DQ3
38
A16
56
A15
3
A2
21
/W E
39
VSS
57
A12
4
A1
22
A17
40
A6
58
A7
5
A0
23
A14
41
VCC
59
VCC
6
VCC
24
A13
42
A5
60
A8
7
A11
25
VCC
43
A4
61
A9
8
/OE
26
DQ8
44
VCC
62
DQ24
9
A10
27
DQ9
45 /CE-UM2 63
DQ25
10
VCC
28
DQ10 46 /CE-UM1 64
DQ26
11 /CE-LL2 29 /CE-LM2 47 DQ23 65 /CE-UU2
12 /CE-LL1 30
VCC
48 DQ16
66 /CE-UU1
13
DQ7
31 /CE-LM1 49
DQ17
67
DQ31
14
DQ0
32
DQ15 50
DQ18
68
DQ30
15
DQ1
33
DQ14 51
DQ22
69
DQ29
16
DQ2
34
DQ13 52
DQ21
70
DQ28
17
DQ6
35
DQ12 53
DQ20
71
DQ27
18
DQ5
36
DQ11 54
DQ19
72
VSS
SIMM TOP VIEW
URL: www.hbe.co.kr
REV.02(August,2002)
1
HANBit Electronics Co.,Ltd.