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IC42S32400L-7B Datasheet(PDF) 6 Page - Integrated Circuit Solution Inc

Part # IC42S32400L-7B
Description  1M x 32 Bit x 4 Banks (128-MBIT) SDRAM
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Manufacturer  ICSI [Integrated Circuit Solution Inc]
Direct Link  http://www.icsi.com.tw
Logo ICSI - Integrated Circuit Solution Inc

IC42S32400L-7B Datasheet(HTML) 6 Page - Integrated Circuit Solution Inc

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IC42S32400
IC42S32400L
6
Integrated Circuit Solution Inc.
DR038-0C 02/01/2005
Operation Mode
Fully synchronous operations are performed to latch the commands at the positive edges of CLK.Table 2 shows the truth
table for the operation commands.
Table 2.Truth Table (Note (1),(2))
Note:
1. V =Valid,X =Don ’t care,L =Logic low,H =Logic high
2. CKEn signal is input level when commands are provided.
CKEn-1 signal is input level one clock cycle before the commands are provided.
3. These are states of bank designated by BS signal.
4. Device state is 1,2,4,8,and full page burst operation.
5. Power Down Mode can not enter in the burst operation.
When this command is asserted in the burst cycle,device state is clock suspend mode.
6. DQM0-3
Command
State
CKEn-1 CKE
DQM(6) BS0,1
A10 A11,A9-0
CS# RAS# CAS# WE#
BankActivate
Idle (3)
H
X
X
V
Row address
L
L
H
H
BankPrecharge
Any
H
X
X
V
L
X
L
L
H
L
PrechargeAll
Any
H
X
X
X
H
X
L
L
H
L
Write
Active (3)
HX
X
V
L
L
H
L
L
Write and Auto Precharge Active (3)
HX
X
V
H
L
H
L
L
Read
Active (3)
HX
X
V
L
L
H
L
H
Read and Autoprecharge
Active (3)
HX
X
V
H
L
H
L
H
Mode Register
Set Idle
H
X
X
OP code
L
L
L
L
No-Operation
Any
H
X
X
X
X
X
L
H
H
H
Burst Stop
Active(4)
HX
X
X
X
X
L
H
H
L
Device Deselect
Any
H
X
X
X
X
X
H
X
X
X
AutoRefresh
Idle
H
H
X
X
X
X
L
L
L
H
SelfRefresh Entry
Idle
H
L
X
X
X
X
L
L
L
H
SelfRefresh Exit
Idle
L
H
X
X
X
X
H
X
X
X
(SelfRefresh)
L
H
H
H
Clock Suspend Mode Entry Active
H
L
X
X
X
X
X
X
X
X
Power Down Mode Entry
Any(5)
HL
X
X
X
X
H
X
X
X
LH
H
H
Clock Suspend Mode Exit Active
L
H
X
X
X
X
X
X
X
X
Power Down Mode Exit
Any
L
H
X
X
X
X
H
X
X
X
(PowerDown)
L
H
H
H
Data Write/Output Enable Active
H
X
L
X
X
X
X
X
X
X
Data Mask/Output Disable Active
H
X
H
X
X
X
X
X
X
X
Column
address
(A0 ~A7)
Column
address
(A0 ~A7)


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