MK31VT832-10YC 98.09.03
Ñ
Ò
FUNCTION TRUTH TABLE
Current State(n)
Self Refresh
CKEn-1
H
L
L
L
L
L
L
H
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
H
H
L
L
CKEn
X
H
H
H
H
H
L
X
H
H
H
H
H
L
H
L
L
L
L
L
L
L
L
H
L
H
L
/CS
X
H
L
L
L
L
X
X
H
L
L
L
L
X
X
H
L
L
L
L
L
L
X
X
X
X
X
(CKE)
/RAS
X
X
H
H
H
L
X
X
X
H
H
H
L
X
X
X
H
H
H
L
L
L
X
X
X
X
X
(Table2)
/WE
X
X
H
L
X
X
X
X
X
H
L
X
X
X
X
X
H
L
X
L
H
L
X
X
X
X
X
ADDR
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Action
INVALID
Exit Self Refresh ABI
Exit Self Refresh ABI
ILLEGAL
ILLEGAL
ILLEGAL
NOP (Maintain Self Refresh)
INVALID
Exit Power Down ABI
Exit Power Down ABI
ILLEGAL
ILLEGAL
6
ILLEGAL
NOP (Continue power down mode)
Refer to Table 1
Enter Power Down
Enter Power Down
ILLEGAL
ILLEGAL
ILLEGAL
Enter Self Refresh
ILLEGAL
NOP
Refer to Operations in Table 1
Begin Clock Suspend Next Cycle
Enable Clock of Next Cycle
Continue Clock Suspension
Power Down
All Banks idle
(ABI)
6
Any State
Other than
Listed Above
/CAS
X
X
H
H
L
X
X
X
X
H
H
L
X
X
X
X
H
H
L
H
L
L
X
X
X
X
X
Æ
Æ
Æ
Æ
Notes:
6.
Power-down and self refresh can be entered only when all the banks are in an idle state.
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