TMS626812B Datasheet, PDF (24/40 Pages) Texas Instruments – 1,048,576 BY 8-BIT BY 2-BANK SYNCHRONOUS DYNAMIC RANDOM-ACCESS MEMORIES

TMS626812B
1 048 576 BY 8-BIT BY 2-BANK
SYNCHRONOUS DYNAMIC RANDOM-ACCESS MEMORIES
SMOS693A – OCTOBER 1997 – REVISED APRIL 1998
PARAMETER MEASUREMENT INFORMATION
CLK
CKE
Last Data-In
WRT
(WRT-P)
Operation
Last
Data-Out
READ
(READ-P)
Operation
tIH
Enter
Power-Down
Mode
CLK Is
Don’t Care,
But Must Be
Stable
Before CKE
High
Exit
Power-Down
Mode If tCESP
Is Satisfied
(New
Command)
tCESP
tIS
CLK
CKE
Last Data-In
WRT
(WRT-P)
Operation
Last
Data-Out
READ
(READ-P)
Operation
Enter
Power-Down
Mode
CLK Is
Don’t Care,
But Must Be
Stable
Before CKE
High
tIH
tIS
Figure 18. Power-Down Operation
DESL or
NOOP
Command
Only If tCESP
Is Not
Satisfied
Exit Power-Down
Mode (New
Command)
tCESP
24
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