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HANBit

HMF8M32M8A

FLASH-ROM MODULE 32MByte (8M x 32Bit), 72-Pin SIMM, 5V

Part No. HMF8M32M8A

GENERAL DESCRIPTION

The HMF8M32M8A is a high-speed flash read only memory (FROM) module containing 16,777,216 words organized in a

x32bit configuration. The module consists of eight 4M x 8bit FROM mounted on a 72-pin, 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.

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鈥檚 4 bytes independently. Outputs 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

Part Identifications

HMF8M32M8A : 32Mbyte, 72-pin SIMM, Gold

PIN

1

wAccess

time : 55, 70, 90

w

High-density 32MByte design

w

High-reliability, low-power design

w

Single + 5V

鹵

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

Sectors erase architecture

w

Sector group protection

w

Temporary sector group unprotection

w

The used device is Am29F032B or M29F032D

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

-55

-70

-90

22

23

24

PIN ASSIGNMENT

SYMBOL

Vss

A3

A2

A1

A0

Vcc

A11

/OE

A10

/RESET

/CE-LL2

/CE-LL1

DQ7

DQ0

DQ1

DQ2

DQ6

DQ5

DQ4

DQ3

/WE

A17

A14

A13

PIN

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

SYMBOL

A20

DQ8

DQ9

DQ10

/CE-LM2

Vcc

/CE-LM1

DQ15

DQ14

DQ13

DQ12

DQ11

A18

A16

Vss

A6

A21

A5

A4

Vcc

/CE-UM2

/CE-UM1

DQ23

DQ16

PIN

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

SYMBOL

DQ17

DQ18

DQ22

DQ21

DQ20

DQ19

A19

A15

A12

A7

Vcc

A8

A9

DQ24

DQ25

DQ26

/CE-UU2

/CE-UU1

DQ31

DQ30

DQ29

DQ28

DQ27

Vss

OPTIONS

w

Timing

55ns access

70ns access

90ns access

w

Packages

MARKING

72-PIN SIMM

72-pin SIMM

M

TOP VIEW

URL: www.hbe.co.kr

REV.02(August,2002)

1

HANBit Electronics Co., Ltd.

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