MSC23S2640E 데이터 시트보기 (PDF) - Oki Electric Industry
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MSC23S2640E Datasheet PDF : 11 Pages
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MSC23S2640E-8BS8 (98.08.19)
FUNCTION TRUTH TABLE (CKE) (Table2)
Current State (n) CKEn-1 CKEn /CS /RAS /CAS /WE ADDR
Action
Self Refresh
H
L
L
X
X
X
H
H
X
H
L
H
X
X
X
X
H
H
X
X
X
INVALID
Æ Exit Self Refresh ABI
Æ Exit Self Refresh ABI
L
H
L
H
H
L
X ILLEGAL
L
H
L
H
L
X
X ILLEGAL
L
H
L
L
X
X
X ILLEGAL
L
L
X
X
X
X
X NOP (Maintain Self Refresh)
Power Down
H
L
L
X
X
X
H
H
X
H
L
H
X
X
X
X
H
H
X
X
X
INVALID
Æ Exit Power Down ABI
Æ Exit Power Down ABI
L
H
L
H
H
L
X ILLEGAL
L
H
L
H
L
X
X ILLEGAL
L
H
L
X
X
X
X
ILLEGAL 6
L
L
X
X
X
X
X NOP (Continue power down mode)
All Banks idle 6
H
H
X
X
X
X
X Refer to Table 1
(ABI)
H
L
H
X
X
X
X Enter Power Down
H
L
L
H
H
H
X Enter Power Down
H
L
L
H
H
L
X ILLEGAL
H
L
L
H
L
X
X ILLEGAL
H
L
L
L
H
L
X ILLEGAL
H
L
L
L
L
H
X Enter Self Refresh
H
L
L
L
L
L
X ILLEGAL
L
L
X
X
X
X
X NOP
Any State
H
H
X
X
X
X
X Refer to Operations in Table 1
Other than
H
L
X
X
X
X
X Begin Clock Suspend Next Cycle
Listed Above
L
H
X
X
X
X
X Enable Clock of Next Cycle
L
L
X
X
X
X
X Continue Clock Suspension
Notes:
6. Power-down and self refresh can be entered only when all the banks are in an idle state.
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