UPD45128163-A75L ELPIDA [Elpida Memory], UPD45128163-A75L Datasheet - Page 14

• Manufacturer Part Number: UPD45128163-A75L
• Description: 128M-bit Synchronous DRAM 4-bank, LVTTL
• Manufacturer: ELPIDA [Elpida Memory]

4.4 Operative Command Table
14
Idle
Row active
Read
Write
Current state
/CS /RAS /CAS /WE
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
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
Note1
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
Op-Code
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
Op-Code
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
Op-Code
BA, CA, A10
BA, CA, A10
BA, RA
BA, A10
Op-Code
Address
Data Sheet E0344N10 (Ver. 1.0)
DESL
NOP or BST
READ/READA
WRIT/WRITA
ACT
PRE/PALL
REF/SELF
MRS
DESL
NOP or BST
READ/READA
WRIT/WRITA
PRE/PALL
REF/SELF
MRS
DESL
NOP
BST
READ/READA
WRIT/WRITA
PRE/PALL
REF/SELF
MRS
DESL
NOP
BST
READ/READA
WRIT/WRITA
PRE/PALL
REF/SELF
MRS
ACT
ACT
ACT
Command
Nop or power down
Nop or power down
ILLEGAL
ILLEGAL
Row activating
Nop
CBR (auto) refresh or self refresh
Mode register accessing
Nop
Nop
Begin read : Determine AP
Begin write : Determine AP
ILLEGAL
Precharge
ILLEGAL
ILLEGAL
Continue burst to end
Continue burst to end
Burst stop
Terminate burst, new read : Determine AP
Terminate burst, start write : Determine AP
ILLEGAL
Terminate burst, precharging
ILLEGAL
ILLEGAL
Continue burst to end
Continue burst to end
Burst stop
Terminate burst, start read : Determine AP
Terminate burst, new write : Determine AP
ILLEGAL
Terminate burst, precharging
ILLEGAL
ILLEGAL
Row active
Row active
Action
Row active
Row active
Write recovering
Write recovering
PD45128163
Notes
(1/3)
7, 8
7, 8
2
2
3
3
4
5
5
3
6
7
3
7
3
9