HMS1M32M8S 参数 Datasheet PDF下载

HANBit

HMS1M32M8S

HAN

BIT

High-Speed SRAM MODULE 4Mbyte(1M x 32-Bit)

Part No.

HMS1M32M8S, HMS1M32Z8S

GENERAL DESCRIPTION

The HMS1M32M8S is a high-speed static random access memory (SRAM) module containing 1,048,576 words

organized in a x32-bit configuration. The module consists of eight 512K x 8 SRAMs mounted on a 72-pin, double-

sided, FR4-printed circuit board.

The HMS1M32M8S also support low data retention voltage for battery back-up operations with low data retention

current. 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.

Data is written into the SRAM memory when write enable (/WE) and chip enable (/CE) inputs are both LOW.

Reading is accomplished when /WE remains HIGH and /CE and output enable (/OE) are LOW.

For reliability, this SRAM module is designed as multiple power and ground pin. All module components may be

powered from a single +5V DC power supply and all inputs and outputs are fully TTL-compatible

FEATURES

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Part identification

- HMS1M32M8S : SIMM design

- HMS1M32Z8S : ZIP design

Pin-Compatible with the HMS1M32M8S

Vss

A3

A2

A1

A0

Vcc

A11

/OE

A10

Vcc

/CE_LL2

/CE_LL1

DQ7

DQ0

DQ1

DQ2

DQ6

DQ5

DQ4

DQ3

A15

A17

/WE

A13

Vcc

DQ8

DQ9

DQ10

/CE_LM2

Vcc

/CE_LM1

DQ15

DQ14

DQ13

DQ12

DQ11

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

PIN ASSIGNMENT

A18

A16

Vss

A6

Vcc

A5

A4

Vcc

/CE_UM2

/CE_UM1

DQ23

DQ16

DQ17

DQ18

DQ22

DQ21

DQ20

DQ19

Vcc

A14

A12

A7

Vcc

A8

A9

DQ24

DQ25

DQ26

/CE_UU2

/CE_UU1

DQ31

DQ30

DQ29

DQ28

DQ27

Vss

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

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Access times : 10, 12, 15, 17 and 20ns

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High-density 4MByte design

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High-reliability, high-speed design

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Single + 5V

±0.5V

power supply

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All inputs and outputs are TTL-compatible

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FR4-PCB design

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72-Pin SIMM Design

OPTIONS

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Timing

10ns access

12ns access

15ns access

17ns access

20ns access

MARKING

-10

-12

-15

-17

-20

M

Š

Packages

72-pin SIMM

SIMM

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