HB54R5128KN-10B datasheet(6/16 Pages) ELPIDA

Part #	HB54R5128KN-10B

Description	512MB DDR SDRAM SO DIMM

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Manufacturer	ELPIDA [Elpida Memory]

Direct Link	http://www.elpida.com/en

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6 / 16 page

HB54R5128KN-A75B/B75B/10B

Data Sheet E0189H40 (Ver. 4.0)

6

Byte No.

Function described

Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Hex value

Comments

28

Minimum row active to row active

delay (tRRD)

0

1

0

3C

15ns

29

Minimum /RAS to /CAS delay (tRCD)

0

1

0

1

0

50

20ns

30

Minimum active to precharge time

(tRAS)

-A75B/B75B

0

1

0

1

0

1

2D

45ns

-10B

0

1

0

1

0

32

50ns

31

Module bank density

0

1

0

40

2 banks

256MB

32

Address and command setup time

before clock (tIS)

-A75B/B75B

1

0

1

0

90

0.9ns*

5

-10B

1

0

1

0

B0

1.1ns*

5

33

Address and command hold time after

clock (tIH)

-A75B/B75B

1

0

1

0

90

0.9ns*

5

-10B

1

0

1

0

B0

1.1ns*

5

34

Data input setup time before clock

(tDS)

-A75B/B75B

0

1

0

1

0

50

0.5ns*

5

-10B

0

1

0

60

0.6ns*

5

35

Data input hold time after clock (tDH)

-A75B/B75B

0

1

0

1

0

50

0.5ns*

5

-10B

0

1

0

60

0.6ns*

5

36 to 40

Superset information

0

00

Future use

41

Active command period (tRC)

-A75B/B75B

0

1

0

1

41

65ns*

5

-10B

0

1

0

1

0

46

70ns*

5

42

Auto refresh to active/

Auto refresh command cycle (tRFC)

-A75B/B75B

0

1

0

1

0

1

4B

75ns*

5

-10B

0

1

0

1

0

50

80ns*

5

43

SDRAM tCK cycle max. (tCK max.)

0

1

0

30

12ns*

5

44

Dout to DQS skew

-A75B/B75B

0

1

0

1

0

32

500ps*

5

-10B

0

1

0

3C

600ps*

5

45

Data hold skew (tQHS)

-A75B/B75B

0

1

0

1

0

1

75

750ps*

5

-10B

1

0

1

0

A0

1000ps*

5

46 to 61

Superset information

0

00

Future use

62

SPD revision

0

00

Initial

63

Checksum for bytes 0 to 62

-A75B

1

0

1

0

1

B3

179

-B75B

1

0

1

E3

227

-10B

1

0

1

0

1

0

A8

168

64

Manufacturer’s JEDEC ID code

0

1

07

HITACHI

65 to 71

Manufacturer’s JEDEC ID code

0

00

72

Manufacturing location

×

××

*

2 (ASCII-8bit

code)

73

Module part number

0

1

0

1

0

48

H

74

Module part number

0

1

0

1

0

42

B

75

Module part number

0

1

0

1

0

1

35

5

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