Q67100-Q979 datasheet(8/10 Pages) SIEMENS

Part #	Q67100-Q979

Description	4M x 32-Bit Dynamic RAM Module

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Manufacturer	SIEMENS [Siemens Semiconductor Group]

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8 / 10 page

Semiconductor Group

8

HYM 324020S/GS-50/-60

4M x 32-Bit

Early Write Cycle

Write command hold time

tWCH

8–

10

–

ns

Write command pulse width

tWP

8–

10

–

ns

Write command setup time

tWCS

0–

ns

13

Write command to RAS lead time

tRWL

13

–

15

–

ns

Write command to CAS lead time

tCWL

13

–

15

–

ns

Data setup time

tDS

0–

ns

14

Data hold time

tDH

10

–

10

–

ns

14

Fast Page Mode Cycle

Fast page mode cycle time

tPC

35

–

40

–

ns

CAS precharge time

tCP

10

–

10

–

ns

Access time from CAS precharge

tCPA

–

30

–

35

ns

7

RAS pulse width

tRAS

50

200k

60

200k

ns

CAS precharge to RAS Delay

tRHCP

30

–

35

–

ns

CAS-before-RAS Refresh Cycle

CAS setup time

tCSR

10

–

10

–

ns

CAS hold time

tCHR

10

–

10

–

ns

RAS to CAS precharge time

tRPC

5–

ns

Write to RAS precharge time

tWRP

10

–

10

–

ns

Write hold time referenced to RAS

tWRH

10

–

10

–

ns

AC Characteristics (cont’d) 5)6)

T

A = 0 to 70 °C,VCC = 5 V ± 10 %, tT = 5 ns

Parameter

Symbol

Limit Values

Unit

Note

-50

-60

min.

max.

min.

max.

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Q67100-Q979 Datasheet(PDF) 8 Page - Siemens Semiconductor Group

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