V827464N24S データシートの表示（PDF） - Mosel Vitelic Corporation

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V827464N24S

2.5 VOLT 64M x 72 HIGH PERFORMANCE REGISTERED ECC DDR SDRAM MODULE

Mosel Vitelic Corporation  

MOSEL VITELIC

Serial Presence Detect Information (cont.)

V827464N24S

Function Supported

Hex value

Byte #

Function described

A1 B0 B1 C0 A1 B0 B1 C0

28 Minimum row activate to row active delay(=tRRD)

29 Minimum RAS to CAS delay(=tRCD)

30 Minimum active to precharge time(=tRAS)

31 Module Row density

15ns 15ns 15ns 12ns 3Ch 3Ch 38h 30h

20ns 20ns 20ns 18ns 50h 50h 48h 48h

50ns 45ns 45ns 42ns 32h 2Dh 2Dh 2Ah

256MB

40h

32 Command and address signal input setup time

1.1ns 0.9ns 0.9ns 0.75ns B0h 90h 90h 75h

33 Command and address signal input hold time

1.1ns 0.9ns 0.9ns 0.75ns B0h 90h 90h 75h

34 Data signal input setup time

0.6ns 0.5ns 0.5ns 0.45ns 60h 50h 50h 45h

35 Data signal input hold time

0.6ns 0.5ns 0.5ns 0.45ns 60h 50h 50h 45h

36-40 Superset information (may be used in future)

-

00h

41 SDRAM device minimum active to active/auto-refresh time

(=tRC)

70ns 65ns 65ns 60ns 46h 41h 3Ch 3Ch

42 SDRAM device minimum active to autorefresh to active/auto-re- 80ns 75ns 75ns 72ns 50h 4Bh 4Bh 48h

fresh time (=tRFC)

43 SDRAM device maximum device cycle time (=tCK MAX)

12ns 12ns 12ns 12ns 30h 30h 30h 30h

44 SDRAM device maximum skew between DQS and DQ signals 0.6ns 0.5ns 0.5ns 0.45ns 3Ch 32h 32h 2Dh

(=tDQSQ)

45 SDRAM device maximum read datahold skew factor (=tQHS)

1ns 0.75ns 0.75ns 0.60ns A0h 75h 75h 60h

62 SPD data revision code

Initial release

00h

63 Checksum for Bytes 0 ~ 62

-

38h 73h 2Ah 9Ch

64 Manufacturer JEDEC ID code

Mosel Vitelic

40h

65 -71 ....... Manufacturer JEDEC ID code

00h

72 Manufacturing location

02=Taiwan 05=China

0A=S-CH

73-90 Module part number (ASCII)

V827464N24S

91 Manufacturer revison code (For PCB)

0

00

92 Manufacturer revison code (For component)

0

00

93 Manufacturing date (Week)

-

-

94 Manufacturing date (Year)

-

-

95~98 Assembly serial #

-

-

99~127 Manufacturer specific data (may be used in future)

Undefined

00h

128~25 Open for customer use

5

Undefined

00h

V827464N24S Rev. 1.0 August 2002

6

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