參數(shù)資料
型號： μPD4516421A
廠商： NEC Corp.
英文描述： 16M-bit Synchronous DRAM(16M 同步動態(tài)RAM)
中文描述： 1,600位同步DRAM（1,600同步動態(tài)RAM）的
文件頁數(shù)： 17/86頁
文件大?。?/td> 904K
代理商： ΜPD4516421A
μ
PD4516421A, 4516821A, 4516161A for Rev. P
17
(2/3)
Current state
CS
RAS
CAS
WE
Address
Command
Action
Notes
Read with auto
precharge
H
×
×
×
×
DESL
Continue burst to end
→
Precharging
L
H
H
H
×
NOP
Continue burst to end
→
Precharging
L
H
H
L
×
BST
ILLEGAL
L
H
L
H
BA, CA, A10
READ/READA
ILLEGAL
4
L
H
L
L
BA, CA, A10
WRIT/WRITA
ILLEGAL
4
L
L
H
H
BA, RA
ACT
ILLEGAL
4
L
L
H
L
BA, A10
PRE/PALL
ILLEGAL
4
L
L
L
H
×
REF/SELF
ILLEGAL
L
L
L
L
Op-Code
MRS
ILLEGAL
Write with auto
H
×
×
×
×
DESL
Continue burst to end
→
Write
recovering with auto precharge
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
4
L
H
L
L
BA, CA, A10
WRIT/WRITA
ILLEGAL
4
L
L
H
H
BA, RA
ACT
ILLEGAL
4
L
L
H
L
BA, A10
PRE/PALL
ILLEGAL
4
L
L
L
H
×
REF/SELF
ILLEGAL
L
L
L
L
Op-Code
MRS
ILLEGAL
Precharging
H
×
×
×
×
DESL
Nop
→
Enter idle after t
RP
L
H
H
H
×
NOP
Nop
→
Enter idle after t
RP
L
H
H
L
×
BST
Nop
→
Enter idle after t
RP
L
H
L
H
BA, CA, A10
READ/READA
ILLEGAL
4
L
H
L
L
BA, CA, A10
WRIT/WRITA
ILLEGAL
4
L
L
H
H
BA, RA
ACT
ILLEGAL
4
L
L
H
L
BA, A10
PRE/PALL
Nop
→
Enter idle after t
RP
L
L
L
H
×
REF/SELF
ILLEGAL
L
L
L
L
Op-Code
MRS
ILLEGAL
Row activating
H
×
×
×
×
DESL
Nop
→
Enter row active after t
RCD
L
H
H
H
×
NOP
Nop
→
Enter row active after t
RCD
L
H
H
L
×
BST
Nop
→
Enter row active after t
RCD
L
H
L
H
BA, CA, A10
READ/READA
ILLEGAL
4
L
H
L
L
BA, CA, A10
WRIT/WRITA
ILLEGAL
4
L
L
H
H
BA, RA
ACT
ILLEGAL
4, 11
L
L
H
L
BA, A10
PRE/PALL
ILLEGAL
4
L
L
L
H
×
REF/SELF
ILLEGAL
L
L
L
L
Op-Code
MRS
ILLEGAL
相關(guān)PDF資料
PDF描述
μPD4516821A 16M-bit Synchronous DRAM(16M 同步動態(tài)RAM)
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