HANBit

HMD4M32M8G

HANBit Electronics Co.,Ltd.

REV. 1.0(August. 2002)

1

GENERAL DESCRIPTION

The HMD4M32M8G is a 4M x 32bit dynamic RAM high-density memory module. The module consists of eight CMOS

4M x 4bit DRAMs in 24-pin SOJ packages mounted on a 72-pin, double-sided, FR-4-printed circuit board.

A 0.1 or

0.22uF decoupling capacitor is mounted on the printed circuit board for each DRAM components. The module is a single

In-line Memory Module with edge connections and is intended for mounting in to 72-pin edge connector sockets. All

module components may be powered from a single 5V DC power supply and all inputs and outputs are TTL-compatible.

FEATURES

w Part Identification

HMD4M32M8G- -2,048 Cycles/32ms Ref . Gold

HMD4M32M8AG- 4,096 Cycles/64ms Ref . Gold

w Access times : 50, 60ns

w High-density 16MByte design

w Single + 5V

±0.5V power supply

w JEDEC standard pinout

w FP(Fast Page) mode operation

w TTL compatible inputs and outputs

w FR4-PCB design

OPTIONS

MARKING

w Timing

50ns access

-5

60ns access

-6

w Packages

72-pin SIMM

M

PERFORMANCE RANGE

Speed

tRAC

tCAC

tRC

5

50ns

13ns

90ns

6

60ns

15ns

110ns

PRESENCE DETECT PINS

Pin

50ns

60ns

PD1

Vss

Vss

PD2

NC

NC

PD3

Vss

NC

PD4

Vss

NC

PIN

SYMBOL

PIN

SYMBOL

PIN

SYMBOL

1

Vss

25

DQ22

49

DQ8

2

DQ0

26

DQ7

50

DQ24

3

DQ16

27

DQ23

51

DQ9

4

DQ1

28

A7

52

DQ25

5

DQ17

29

A11

53

DQ10

6

DQ2

30

Vcc

54

DQ26

7

DQ18

31

A8

55

DQ11

8

DQ3

32

A9

56

DQ27

9

DQ19

33

NC

57

DQ12

10

Vcc

34

/RAS2

58

DQ28

11

NC

35

NC

59

Vcc

12

A0

36

NC

60

DQ29

13

A1

37

NC

61

DQ13

14

A2

38

NC

62

DQ30

15

A3

39

Vss

63

DQ14

16

A4

40

/CAS0

64

DQ31

17

A5

41

/CAS2

65

DQ15

18

A6

42

/CAS3

66

NC

19

A10

43

/CAS1

67

Vss

20

DQ4

44

/RAS0

68

PD2

21

DQ20

45

NC

69

PD3

22

DQ5

46

NC

70

PD4

23

DQ21

47

/WE

71

NC

24

DQ6

48

NC

72

Vss

16Mbyte(4Mx32) Fast Page Mode, 2K/4K Refresh 72Pin SIMM

Part No. HMD4M32M8G, HMD4M32M8AG

A0

– A11 : Address Input(4K Ref.)

A0

– A10 : Address Input(2K Ref.)

*Note : A11 is used for only HMD4M32M8AG

PIN ASSIGNMENT