1HY5DU283222BF(P)
OPERATION COMMAND TRUTH TABLE - I
Current
State
/CS
/RAS
/CAS
/WE
Address
Command
Action
NOP or power down3
NOP or power down3
ILLEGAL4
H
L
L
L
X
H
H
H
X
H
H
L
X
H
L
X
DSEL
NOP
X
X
BST
ILLEGAL4
H
BA, CA, AP
READ/READAP
IDLE
ILLEGAL4
Row Activation
NOP
L
L
L
L
L
H
L
L
H
L
L
H
H
L
L
H
L
BA, CA, AP
WRITE/WRITEAP
ACT
BA, RA
L
BA, AP
PRE/PALL
AREF/SREF
MRS
Auto Refresh or Self Refresh5
L
H
L
X
L
L
OPCODE
Mode Register Set
X
H
H
X
H
H
X
H
L
X
X
X
DSEL
NOP
NOP
NOP
ILLEGAL4
Begin read : optional AP6
Begin write : optional AP6
ILLEGAL4
BST
L
L
L
L
L
H
H
L
L
L
H
L
BA, CA, AP
BA, CA, AP
BA, RA
BA, AP
X
READ/READAP
WRITE/WRITEAP
ACT
ROW
ACTIVE
H
H
L
H
L
Precharge7
L
PRE/PALL
ILLEGAL11
L
H
AREF/SREF
ILLEGAL11
L
H
L
L
L
L
L
L
L
L
X
H
H
H
H
L
L
X
H
H
L
L
X
H
L
OPCODE
MRS
DSEL
X
Continue burst to end
Continue burst to end
Terminate burst
X
X
NOP
BST
Term burst, new read:optional AP8
ILLEGAL
H
L
BA, CA, AP
BA, CA, AP
BA, RA
BA, AP
X
READ/READAP
WRITE/WRITEAP
ACT
L
READ
ILLEGAL4
H
H
L
H
L
L
PRE/PALL
AREF/SREF
Term burst, precharge
ILLEGAL11
L
H
ILLEGAL11
L
H
L
L
X
H
H
L
X
H
H
L
X
H
L
OPCODE
MRS
DSEL
NOP
BST
X
X
X
Continue burst to end
Continue burst to end
L
WRITE
ILLEGAL4
Term burst, new read:optional AP8
Term burst, new write:optional AP
L
L
H
H
L
L
H
L
BA, CA, AP
BA, CA, AP
READ/READAP
WRITE/WRITEAP
Rev. 1.2 / Jul. 2005
9
HYNIX [ HYNIX SEMICONDUCTOR ]
