Memória SIMM de 72 pinos

 

 

 

 

 

 

 

 

 

 

SIMM=Single Inline Memory Module

72 PIN SIMM

72 PIN SIMM at the computer.

Pin

Non-Parity

Parity

Description

1

VSS

VSS

Ground

2

DQ0

DQ0

Data 0

3

DQ16

DQ16

Data 16

4

DQ1

DQ1

Data 1

5

DQ17

DQ17

Data 17

6

DQ2

DQ2

Data 2

7

DQ18

DQ18

Data 18

8

DQ3

DQ3

Data 3

9

DQ19

DQ19

Data 19

10

VCC

VCC

+5 VDC

11

n/c

n/c

Not connected

12

A0

A0

Address 0

13

A1

A1

Address 1

14

A2

A2

Address 2

15

A3

A3

Address 3

16

A4

A4

Address 4

17

A5

A5

Address 5

18

A6

A6

Address 6

19

A10

A10

Address 10

20

DQ4

DQ4

Data 4

21

DQ20

DQ20

Data 20

22

DQ5

DQ5

Data 5

23

DQ21

DQ21

Data 21

24

DQ6

DQ6

Data 6

25

DQ22

DQ22

Data 22

26

DQ7

DQ7

Data 7

27

DQ23

DQ23

Data 23

28

A7

A7

Address 7

29

A11

A11

Address 11

30

VCC

VCC

+5 VDC

31

A8

A8

Address 8

32

A9

A9

Address 9

33

/RAS3

/RAS3

Row Address Strobe 3

34

/RAS2

/RAS2

Row Address Strobe 2

35

n/c

PQ3

Parity bit 3 (for the 3rd byte, bits 16-23)

36

n/c

PQ1

Parity bit 1 (for the 1st byte, bits 0-7)

37

n/c

PQ2

Parity bit 2 (for the 2nd byte, bits 8-15)

38

n/c

PQ4

Parity bit 4 (for the 4th byte, bits 24-31)

39

VSS

VSS

Ground

40

/CAS0

/CAS0

Column Address Strobe 0

41

/CAS2

/CAS2

Column Address Strobe 2

42

/CAS3

/CAS3

Column Address Strobe 3

43

/CAS1

/CAS1

Column Address Strobe 1

44

/RAS0

/RAS0

Row Address Strobe 0

45

/RAS1

/RAS1

Row Address Strobe 1

46

n/c

n/c

Not connected

47

/WE

/WE

Read/Write

48

n/c

n/c

Not connected

49

DQ8

DQ8

Data 8

50

DQ24

DQ24

Data 24

51

DQ9

DQ9

Data 9

52

DQ25

DQ25

Data 25

53

DQ10

DQ10

Data 10

54

DQ26

DQ26

Data 26

55

DQ11

DQ11

Data 11

56

DQ27

DQ27

Data 27

57

DQ12

DQ12

Data 12

58

DQ28

DQ28

Data 28

59

VCC

VCC

+5 VDC

60

DQ29

DQ29

Data 29

61

DQ13

DQ13

Data 13

62

DQ30

DQ30

Data 30

63

DQ14

DQ14

Data 14

64

DQ31

DQ31

Data 31

65

DQ16

DQ16

Data 16

66

n/c

n/c

Not connected

67

PD1

PD1

Presence Detect 1

68

PD2

PD2

Presence Detect 2

69

PD3

PD3

Presence Detect 3

70

PD4

PD4

Presence Detect 4

71

n/c

n/c

Not connected

72

VSS

VSS

Ground

Size:

PD2

PD1

Size

GND

GND

4 or 64 MB

GND

NC

2 or 32 MB

NC

GND

1 or 16 MB

NC

NC

8 MB

Accesstime:

PD4

PD3

Accesstime

GND

GND

50, 100 ns

GND

NC

80 ns

NC

GND

70 ns

NC

NC

60 ns

Notas: A9 N/C em 256k e 512k modules.
A10 N/C em 256k, 512k, 1M e 4M modulos.
RAS1/RAS3 N/C em 256k, 1M e 4M modulos