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參數(shù)資料
| 型號： | 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X32號，同步掩膜ROM（100萬× 32位同步掩膜光盤） |
| 文件頁數(shù)： | 6/25頁 |
| 文件大?。?/td> | 493K |
| 代理商： | KM23SV32205T |
KM23SV32205T
Synch. MROM
Preliminary
CAPACITANCE
(T
A
=25
°
C, f=1MHz)
Parameter
Symbol
Min
Max
Unit
Input Capacitance
C
IN
-
5
pF
Output Capacitance
C
OUT
-
7
pF
FUNCTION TRUTH TABLE
(V=Valid, X=Don
′
t Care, H=Logic High, L=Logic Low)
Abbreviations (RA: Row Address, CA: Column Address, NOP: No Operation Command, DWM: Double Word Mode, WM: Word Mode)
Notes :
1. A
0
~ A
6
: Program keys (@MRS). After power up, mode register set, can be set before issuing other input command. After the mode registeret com-
mand is completed, no new commands can be issued for 3 CLK Cycles, and CS or MR state must be defined "H" within 3 CLK cycles. Refer to the
Mode Register Field Table
2. In the case CKE is low, two standby modes are possible. Those are stand-by mode in power-down.
Power Down: CKE="L" (at all the parts except the range of Row Active, Read & Data out)
Clock Suspend: CKE="L" (at the range of Row Active, Read & Data Out)
3. DQM sampled at rising edge of a CLK makes a Hi-Z state the data-out state, delayed by 2CLK cycles.
4. Precharge command on Synch.DRAM can be used for Burst Stop operation during burst read operation only.
5. Mode selection control is decided simultaneously with column access start, and according to the polarity of WORD pin, "H" state is DWM,
"L" state is WM.
Command
CKEn
-1
CKEn
CS
RAS
CAS
MR
DQM
Add.
WORD
Notes
Register
Mode Register Set
H
X
L
L
L
L
X
Code
X
1
Row Active
Row Access& Latch
Row Access & Latch
H
X
L
L
H
H
X
RA
X
Read
Column Access & Latch
H
X
L
H
L
H
X
CA
X
Burst Stop
(Burst Stop on Synch.DRAM)
H
X
L
H
H
L
X
X
X
(Precharge on Synch.DRAM)
H
X
L
L
H
L
X
X
X
Power Down &
Clock Suspend
Two Standby Mode
Entry
H
L
X
X
X
X
X
X
X
2
Exit
L
H
X
X
X
X
X
X
X
DQM
H
X
V
X
3
Illegal
(Write on Synch.DRAM)
H
X
L
H
L
L
X
CA
X
(Refresh on Synch.DRAM)
H
X
L
L
L
H
X
X
X
No Operation Command
H
X
H
X
X
X
X
X
X
4
H
X
L
H
H
H
X
X
X
Organization Control
H
X
L
H
L
H
X
CA
H
5
L
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