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參數(shù)資料
| 型號(hào)： | KM23SV32205T |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 1M x32 Synchronous MASK ROM(1M×32位同步掩膜ROM) |
| 中文描述： | 100萬(wàn)X32號(hào)，同步掩膜ROM（100萬(wàn)× 32位同步掩膜光盤） |
| 文件頁(yè)數(shù)： | 19/25頁(yè) |
| 文件大?。?/td> | 493K |
| 代理商： | KM23SV32205T |
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KM23SV32205T
Synch. MROM
Preliminary
FUNCTION TRUTH TABLE
* : After the power up, when user wants to change MR set, user must exit from power down mode and start MR set before chip entrs normal operation
mode.
Current
State
Input Signal
Next State Operation
CKE
CS
RAS
CAS
MR
Add.
After
Power Up*
L
X
X
X
X
X
-. Power Down
H
L
L
H
H
RA
-. Row Active ; latch RA
H
L
L
L
L
Code
-. Mode Register Set
Row Active
H
L
L
H
H
RA
-. If consecutive row access is issued within
t
RCmin.
without CAS enabling, only the final
RA is valid.
H
L
H
L
H
CA
-. Begin READ ; latch CA
H
L
L
L
L
Code
Illegal *
L
X
X
X
X
X
-. Clock Suspend
READ
H
L
L
H
H
RA
-. Row Access in Read State,
within the tRC, previous read is ignored and
new row is activated.
beyond the tRC, previous read is completed
and new read begins.
H
L
H
L
H
CA
-. Consecutive Column Access,
within the t
VCVC
, only the final CA is valid
and the previous burst read is ignored.
Beyond the t
VCVC
, the previous read is
completed and new read begins.
H
L
L
H
L
X
-. NOP (After Burst Read) / Read Interrupt
H
L
H
H
L
X
-. NOP (After Burst Read) / Read Interrupt
H
L
L
L
L
Code
Illegal *
L
X
X
X
X
X
-. Clock Suspend / Power Down
Any State
L
L
L
L
H
X
-. Low Power Consumption Mode
Any State
H
L
H
H
H
X
NOP
Any State
H
L
L
L
H
X
Illegal
H
L
H
L
L
CA
Illegal
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