MB81F641642D Fujitsu Microelectronics, MB81F641642D Datasheet - Page 14

• Manufacturer Part Number: MB81F641642D
• Description: 4 x 1M x 16-Bit SDRAM
• Manufacturer: Fujitsu Microelectronics

14
MB81F641642D-75/-102/-102L
(Continued)
Notes: *1. All entries in COMMAND TRUTH TABLE FOR CKE are specified at CKE(n) state and CKE input from
Bank Active
Bank
Activating
Read/Write
Read with
Auto-
precharge/
Write with
Auto-
precharge
Clock
Suspend
Any State
Other Than
Listed
Above
Current
State
*2. CKE should be held High for tRC period.
*3. SELF command should only be issued after the last data have been appeared on DQ.
CKE(n-1) to CKE(n) state must satisfy corresponding set up and hold time for CKE.
CKE
n-1
H
H
H
H
H
L
L
L
L
CKE
H
H
H
n
X
X
X
L
L
L
CS
X
X
X
X
X
X
X
X
X
RAS CAS
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
WE
X
X
X
X
X
X
X
X
X
Addr
X
X
X
X
X
X
X
X
X
Preliminary (AE4.1E)
Refer to the Operation Command
Table.
Begin Clock Suspend next cycle
Invalid
Invalid
Exit Clock Suspend next cycle
Maintain Clock Suspend
Invalid
Refer to the Operation Command
Table.
Illegal
Function
Notes