参数资料
型号: MSC23S4721E
厂商: OKI SEMICONDUCTOR CO., LTD.
英文描述: 4,194,304 Word x 72 Bit SYNCHRONOUS DYNAMIC RAM MODULE (2BANK):
中文描述: 4194304字× 72位同步动态RAM模块(2BANK):
文件页数: 9/11页
文件大小: 76K
代理商: MSC23S4721E
MSC23S4721E-8BS18 (98.07.17)
Page 9/11
FUNCTION TRUTH TABLE (Table1)(1/2)
Current State
/CS
/RAS
/CAS
Idle
H
X
L
H
L
H
L
H
L
L
L
L
L
L
L
L
Row Active
H
X
L
H
L
H
L
H
L
L
L
L
L
L
Read
H
X
L
H
L
H
L
H
L
H
L
L
L
L
L
L
Write
H
X
L
H
L
H
L
H
L
H
L
L
L
L
L
L
Read with
H
X
Auto Precharge
L
H
L
H
L
H
L
H
L
L
L
L
Write with
H
X
Auto Precharge
L
H
L
H
L
H
L
H
L
L
L
L
/WE
X
H
L
X
H
L
H
L
X
X
H
L
H
L
X
X
H
L
H
L
H
L
X
X
H
L
H
L
H
L
X
X
H
L
H
L
X
X
X
H
L
H
L
X
X
BA
X
X
BA
BA
BA
BA
X
L
X
X
BA
BA
BA
BA
X
X
X
BA
BA
BA
BA
BA
X
X
X
BA
BA
BA
BA
BA
X
X
X
BA
BA
X
BA
X
X
X
BA
BA
X
BA
X
ADDR
X
X
X
CA
RA
A10
X
OP Code
X
X
CA, A10
CA, A10
RA
A10
X
X
X
X
CA, A10
CA, A10
RA
A10
X
X
X
X
CA, A10
CA, A10
RA
A10
X
X
X
X
CA, A10
X
RA, A10
X
X
X
X
CA, A10
X
RA, A10
X
Action
X
H
H
L
H
H
L
L
X
H
L
L
H
H
L
X
H
H
L
L
H
H
L
X
H
H
L
L
H
H
L
X
H
H
L
L
H
L
X
H
H
L
L
H
L
NOP
NOP
ILLEGAL
2
ILLEGAL
2
Row Active
NOP
4
Auto-Refresh or Self-Refresh
5
Mode Register write
NOP
NOP
Read
Write
ILLEGAL
2
Precharge
ILLEGAL
NOP (Continue Row Active after Burst ends)
NOP (Continue Row Active after Burst ends)
Reserved
Term Burst, start new Burst Read
Term Burst, start new Burst Write
ILLEGAL
2
Term Burst, execute Row Precharge
ILLEGAL
NOP (Continue Row Active after Burst ends)
NOP (Continue Row Active after Burst ends)
ILLEGAL
2
Term Burst, start new Burst Read
Term Burst, start new Burst Write
ILLEGAL
2
Term Burst, execute Row Precharge
ILLEGAL
NOP (Continue Burst to End and enter Row Precharge)
NOP (Continue Burst to End and enter Row Precharge)
ILLEGAL
2
ILLEGAL
2
ILLEGAL
ILLEGAL
2
ILLEGAL
NOP (Continue Burst to End and enter Row Precharge)
NOP (Continue Burst to End and enter Row Precharge)
ILLEGAL
2
ILLEGAL
2
ILLEGAL
ILLEGAL
2
ILLEGAL
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