TMS416400, TMS416400P, TMS417400, TMS417400P

TMS426400, TMS426400P, TMS427400, TMS427400P

4194304-WORD BY 4-BIT HIGH-SPEED DRAMS

SMKS881B – MAY 1995 – REVISED AUGUST 1995

21

POST OFFICE BOX 1443

PARAMETER MEASUREMENT INFORMATION

RAS

CAS

Address

W

OE

DQ1 – DQ4

Row

Column

Don’t Care

Don’t Care

Valid

In

tRP

Valid Data In

Don’t Care

Don’t Care

Don’t Care

Don’t Care

Don’t Care

Column

tRASP

tCSH

tPC

tCRP

tRSH

tCAS

tRCD

tASC

tRAH

tCAH

tCP

tASR

tRAD

tCWL

tWP

tCWL

tRWL

tDH

tDH

tDS

(see Note A)

tOEH

tOEH

tOED

tRAL

tCAL

tRHCP

tDS

(see Note A)

NOTES: A. Referenced to CAS or W, whichever occurs last

B. A read cycle or a read-write cycle can be intermixed with write cycles as long as read and read-write timing specifications are not

violated.

Figure 8. Enhanced-Page-Mode Write-Cycle Timing