M12L128324A-2M Datasheet, PDF (26/44 Pages) Elite Semiconductor Memory Technology Inc. – JEDEC standard 3.3V power supply

ESMT
M12L128324A (2M)
FUNCTION TRUTH TABLE (TABLE2)
Current
State
Self
Refresh
All
Banks
Precharge
Power
Down
All
Banks
Idle
Any State
other than
Listed
above
CKE
( n-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
CKE
n
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 RAS CAS WE
XX X X
HX X X
LH H H
LH H L
LH L X
LL XX
XX X X
XX X X
HX X X
LH H H
LH H L
LH L X
LL XX
XX X X
XX X X
HX X X
LH H H
LH H L
LH L X
LL HH
LL L H
LL L L
XX X X
XX X X
XX X X
XX X X
XX X X
ADDR
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
RA
X
OP Code
X
X
X
X
X
ACTION
INVALID
Exit Self Refresh Æ Idle after t_RFC (ABI)
Exit Self Refresh Æ Idle after t_RFC (ABI)
ILLEGAL
ILLEGAL
ILLEGAL
NOP (Maintain Self Refresh)
INVALID
Exit Self Refresh Æ ABI
Exit Self Refresh Æ ABI
ILLEGAL
ILLEGAL
ILLEGAL
NOP (Maintain Low Power Mode)
Refer to Table1
Enter Power Down
Enter Power Down
ILLEGAL
ILLEGAL
Row (& Bank) Active
Enter Self Refresh
Mode Register Access
NOP
Refer to Operations in Table 1
Begin Clock Suspend next cycle
Exit Clock Suspend next cycle
Maintain Clock Suspend
Note
6
6
7
7
8
8
8
9
9
Abbreviations: ABI = All Banks Idle, RA = Row Address
*Note:
6.CKE low to high transition is asynchronous.
7.CKE low to high transition is asynchronous if restart internal clock.
A minimum setup time 1CLK + tSS must be satisfy before any command other than exit.
8.Power down and self refresh can be entered only from the all banks idle state.
9.Must be a legal command.
Elite Semiconductor Memory Technology Inc.
Publication Date: Mar. 2011
Revision: 1.2
26/44