A3V56S30FTP Ver la hoja de datos (PDF) - Unspecified
Número de pieza
componentes Descripción
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A3V56S30FTP Datasheet PDF : 40 Pages
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A3V56S30FTP
A3V56S40FTP
256M Single Data Rate Synchronous DRAM
Function Truth Table
Current state /CS /RAS /CAS /WE
Idle
H
X
X
X
L
H
H
H
L
H
H
L
L
H
L
H
L
H
L
L
L
L
H
H
L
L
H
L
L
L
L
H
L
L
L
L
Row active
H
X
X
X
L
H
H
H
L
H
H
L
L
H
L
H
L
H
L
L
L
L
H
H
L
L
H
L
L
L
L
H
L
L
L
L
Read
H
X
X
X
L
H
H
H
L
H
H
L
L
H
L
H
L
H
L
L
L
L
H
H
L
L
H
L
L
L
L
H
L
L
L
L
Write
H
X
X
X
L
H
H
H
L
H
H
L
L
H
L
H
L
H
L
L
L
L
H
H
L
L
H
L
L
L
L
H
L
L
L
L
Read with auto H
X
X
X
precharge
L
H
H
H
L
H
H
L
L
H
L
H
L
H
L
L
L
L
H
H
L
L
H
L
L
L
L
H
L
L
L
L
Write with auto H
X
X
X
precharge
L
H
H
H
L
H
H
L
L
H
L
H
L
H
L
L
L
L
H
H
L
L
H
L
L
L
L
H
L
L
L
L
/Address
X
X
X
BA,CA,A10
BA,CA,A10
BA,RA
BA,A10
X
OC
X
X
X
BA,CA,A10
BA,CA,A10
BA,RA
BA,A10
X
OC
X
X
X
BA,CA,A10
BA,CA,A10
BA,RA
BA,A10
X
OC
X
X
X
BA,CA,A10
BA,CA,A10
BA,RA
BA,A10
X
OC
X
X
X
BA,CA,A10
BA,CA,A10
BA,RA
BA,A10
X
OC
X
X
X
BA,CA,A10
BA,CA,A10
BA,RA
BA,A10
X
OC
Command
DESL
NOP
BST
RD/RDA
WR/WRA
ACT
PRE/PALL
REF
MRS
DESL
NOP
BST
RD/RDA
WR/WRA
ACT
PRE/PALL
REF
MRS
DESL
NOP
BST
RD/RDA
WR/WRA
ACT
PRE/PALL
REF
MRS
DESL
NOP
BST
RD/RDA
WR/WRA
ACT
PRE/PALL
REF
MRS
DESL
NOP
BST
RD/RDA
WR/WRA
ACT
PRE/PALL
REF
MRS
DESL
NOP
BST
RD/RDA
WR/WRA
ACT
PRE/PALL
REF
MRS
Action
NOP
NOP
ILLEGAL
ILLEGAL
ILLEGAL
Bank active
NOP
Auto refresh
Mode register set
NOP
NOP
ILLEGAL
Begin read, determine AP
Begin write, determine AP
Bank active / ILLEGAL
Precharge / Precharge all banks
ILLEGAL
ILLEGAL
Continue burst to end
Continue burst to end
Terminate burst
Terminate burst, begin read, determine AP
Terminate burst, begin write, determine AP
Bank active / ILLEGAL
Terminate burst, precharge
ILLEGAL
ILLEGAL
Continue burst to end
Continue burst to end
Terminate burst
Terminate burst, begin read, determine AP
Terminate burst, begin write, determine AP
Bank active / ILLEGAL
Terminate burst, precharge
ILLEGAL
ILLEGAL
Continue burst to end
Continue burst to end
ILLEGAL
Support concurrent auto-precharge
Support concurrent auto-precharge
Bank active / ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
Continue burst to end
Continue burst to end
ILLEGAL
Support concurrent auto-precharge
Support concurrent auto-precharge
Bank active / ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
Notes
2
2
2
4
5
5
2
2
3
3
2
3
3
2
2
2
2
2
2
2
2
2
Revision 1.1
Page 11 / 39
Mar., 2010
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