Q67100-Q2008 View Datasheet(PDF) - Siemens AG

Part Name

Description

Manufacturer

Q67100-Q2008

8M × 32-Bit Dynamic RAM Module

Siemens AG 

HYM 328020S/GS-50/-60

8M × 32-Bit

AC Characteristics (contd’ ) 5)6)

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

Parameter

Early Write Cycle

Write command hold time

Write command pulse width

Write command setup time

Write command to RAS lead time

Write command to CAS lead time

Data setup time

Data hold time

Symbol

Limit Values

Unit

-50

-60

min. max. min. max.

tWCH

8

–

10 –

ns

tWP

8

–

10 –

ns

tWCS

0

–

0

–

ns

tRWL

13 –

15 –

ns

tCWL

13 –

15 –

ns

tDS

0

–

0

–

ns

tDH

10 –

10 –

ns

Note

13

14

14

Fast Page Mode Cycle

Fast page mode cycle time

CAS precharge time

Access time from CAS precharge

RAS pulse width

CAS precharge to RAS Delay

tPC

35 –

40 –

ns

tCP

10 –

10 –

ns

tCPA

–

30 –

35 ns 7

tRAS

50 200k 60 200k ns

tRHCP 30

–

35 –

ns

CAS-before-RAS Refresh Cycle

CAS setup time

CAS hold time

RAS to CAS precharge time

Write to RAS precharge time

Write hold time referenced to RAS

tCSR

10 –

10 –

ns

tCHR

10 –

10 –

ns

tRPC

5

–

5

–

ns

tWRP

10

–

10 –

ns

tWRH

10

–

10 –

ns

Semiconductor Group

8

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