UPD4564323 データシートの表示（PDF） - NEC => Renesas Technology
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UPD4564323 Datasheet PDF : 84 Pages
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µPD4564323 for Rev. E
Current state
Read with auto
precharge
Write with auto
precharge
Precharging
Row activating
(2/3)
/CS /RAS /CAS /WE Address
H × × ××
L H H H×
L H H L×
L H L H BA, CA, A10
Command
DESL
NOP
BST
READ/READA
Action
Notes
Continue burst to end → Precharging
Continue burst to end → Precharging
ILLEGAL
ILLEGAL
3
L H L L BA, CA, A10 WRIT/WRITA ILLEGAL
3
L L H H BA, RA
ACT
ILLEGAL
3
L L H L BA, A10
PRE/PALL
ILLEGAL
3
L L L H×
REF/SELF
ILLEGAL
L L L L Op-Code
MRS
ILLEGAL
H × × ××
DESL
Continue burst to end → Write
recovering with auto precharge
L H H H×
NOP
Continue burst to end → Write
recovering with auto precharge
L H H L×
BST
ILLEGAL
L H L H BA, CA, A10 READ/READA ILLEGAL
3
L H L L BA, CA, A10 WRIT/WRITA ILLEGAL
3
L L H H BA, RA
ACT
ILLEGAL
3
L L H L BA, A10
PRE/PALL
ILLEGAL
3
L L L H×
REF/SELF
ILLEGAL
L L L L Op-Code
MRS
ILLEGAL
H × × ××
DESL
Nop → Enter idle after tRP
L H H H×
NOP
Nop → Enter idle after tRP
L H H L×
BST
ILLEGAL
L H L H BA, CA, A10 READ/READA ILLEGAL
3
L H L L BA, CA, A10 WRIT/WRITA ILLEGAL
3
L L H H BA, RA
ACT
ILLEGAL
3
L L H L BA, A10
PRE/PALL
Nop → Enter idle after tRP
L L L H×
REF/SELF
ILLEGAL
L L L L Op-Code
MRS
ILLEGAL
H × × ××
DESL
Nop → Enter bank active after tRCD
L H H H×
NOP
Nop → Enter bank active after tRCD
L H H L×
BST
ILLEGAL
L H L H BA, CA, A10 READ/READA ILLEGAL
3
L H L L BA, CA, A10 WRIT/WRITA ILLEGAL
L L H H BA, RA
ACT
ILLEGAL
3
3, 10
L L H L BA, A10
PRE/PALL
ILLEGAL
3
L L L H×
REF/SELF
ILLEGAL
L L L L Op-Code
MRS
ILLEGAL
Data Sheet M14376EJ2V0DS00
15
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