參數(shù)資料
型號: V54C3128804VBGA
廠商: Mosel Vitelic, Corp.
英文描述: 128Mbit SDRAM 3.3 VOLT, BGA PACKAGE
中文描述: 128Mbit SDRAM的3.3伏,BGA封裝
文件頁數(shù): 41/45頁
文件大小: 871K
代理商: V54C3128804VBGA
41
V54C3128(16/80/40)4V(BGA) Rev. 1.2 September 2001
MOSEL VITELIC
V54C3128(16/80/40)4V(BGA)
Complete List of Operation Commands
SDRAM Function Truth Table
CURRENT
STATE
1
CS
RAS
CAS
WE
BS
Addr
ACTION
Idle
H
L
L
L
L
L
L
L
X
H
H
H
L
L
L
L
X
H
H
L
H
H
L
L
X
H
L
X
H
L
H
L
X
X
BS
BS
BS
BS
X
Op-
X
X
X
X
RA
AP
X
Code
NOP or Power Down
NOP
ILLEGAL
2
ILLEGAL
2
Row (&Bank) Active; Latch Row Address
NOP
4
Auto-Refresh or Self-Refresh
5
Mode reg. Access
5
Row Active
H
L
L
L
L
L
L
X
H
H
H
L
L
L
X
H
L
L
H
H
L
X
X
H
L
H
L
X
X
X
BS
BS
BS
BS
X
X
X
CA,AP
CA,AP
X
AP
X
NOP
NOP
Begin Read; Latch CA; DetermineAP
Begin Write; Latch CA; DetermineAP
ILLEGAL
2
Precharge
ILLEGAL
Read
H
L
L
L
L
L
L
L
X
H
H
H
H
L
L
L
X
H
H
L
L
H
H
L
X
H
L
H
L
H
L
X
X
X
BS
BS
BS
BS
BS
X
X
X
X
CA,AP
CA,AP
X
AP
X
NOP (Continue Burst to End;>Row Active)
NOP (Continue Burst to End;>Row Active)
Burst Stop Command > Row Active
Term Burst, New Read, DetermineAP
3
Term Burst, Start Write, DetermineAP
3
ILLEGAL
2
Term Burst, Precharge
ILLEGAL
Write
H
L
L
L
L
L
L
L
X
H
H
H
H
L
L
L
X
H
H
L
L
H
H
L
X
H
L
H
L
H
L
X
X
X
BS
BS
BS
BS
BS
X
X
X
X
CA,AP
CA,AP
X
AP
X
NOP (Continue Burst to End;>Row Active)
NOP (Continue Burst to End;>Row Active)
Burst Stop Command > Row Active
Term Burst, Start Read, DetermineAP
3
Term Burst, New Write, DetermineAP
3
ILLEGAL
2
Term Burst, Precharge
3
ILLEGAL
Read
with
Auto
Precharge
H
L
L
L
L
L
L
L
X
H
H
H
H
L
L
L
X
H
H
L
L
H
H
L
X
H
L
H
L
H
L
X
X
X
BS
BS
X
BS
BS
X
X
X
X
X
X
X
AP
X
NOP (Continue Burst to End;> Precharge)
NOP (Continue Burst to End;> Precharge)
ILLEGAL
2
ILLEGAL
2
ILLEGAL
ILLEGAL
2
ILLEGAL
2
ILLEGAL
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