VG36641641DT-6 Powerchip, VG36641641DT-6 Datasheet - Page 10

• Manufacturer Part Number: VG36641641DT-6
• Description: CMOS Synchronous Dynamic RAM
• Manufacturer: Powerchip

2.4 Operative Command Table (note 1)
VIS
HCurrent state CS
Idle
Row active
Read
Write
Document :1G5-0177
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
RAS CAS WE
H
H
H
H
H
H
H
H
H
H
H
H
H
H
X
X
X
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
X
H
H
H
X
H
H
H
X
H
H
H
H
X
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
X
X
H
H
H
X
X
H
H
H
X
H
H
H
H
X
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
X
X
BA, CA, A10
BA, CA, A10
BR, RA
BA, A10
X
Op-Code
X
X
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
X
Op-Code
X
X
X
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
X
Op-Code
X
X
X
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
X
Op-Code
Address
DESL
NOP or BST
READ/READA ILLEGAL
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MPS
DESL
NOP or BST
READ/READA Begin read : Determine AP
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
DESL
NOP
BST
READ/READA Term burst, new read : Determine AP
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
DESL
NOP
BST
READ/READA Term burst, start read : Determine AP
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
VG36644041DT / VG36648041DT / VG36641641DT
Rev.5
Command
Nop or Power down
Nop or Power down
ILLEGAL
Row active
Nop
Refresh or Self refresh
Mode register access
Nop
Nop
Begin write : Determine AP
ILLEGAL
Precharge
ILLEGAL
ILLEGAL
Continue burst to end
Continue burst to end
Burst stop
Term burst, start write : Determine AP
ILLEGAL
Term burst, precharging
ILLEGAL
ILLEGAL
Continue burst to end
Continue burst to end
Burst stop
Term burst, new write : Determine AP
ILLEGAL
Term burst, precharging
ILLEGAL
ILLEGAL
CMOS Synchronous Dynamic RAM


Row active
Row active
Action




Row active
Row active
write recovering
write recovering
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Notes
7,8
7,8
2
2
3
3
4
5
5
3
6
7
3
7
3
9