AS4C32M16SB-7TIN Datasheet, PDF (7/55 Pages) Alliance Semiconductor Corporation – 54pin TSOPII PACKAGE

AS4C32M16SB-6TIN
AS4C32M16SB-7TIN
AS4C32M16SB-7TCN
Operation Mode
Fully synchronous operations are performed to latch the commands at the positive edges of CLK. Table 4
shows the truth table for the operation commands.
Table 4. Truth Table (Note (1), (2))
Command
State CKEn-1 CKEn DQM BA0,1 A10 A0-9,11-12 CS# RAS# CAS# WE#
BankActivate
Idle⁽³⁾
H
X X V Row address L
L HH
BankPrecharge
Any
H X X VL
X
L LHL
PrechargeAll
Any
H X X XH
X
L LHL
Write
Active⁽³⁾ H
X
V
V
L
Column
LHL
L
address
Write and AutoPrecharge Active⁽³⁾ H
X
V
V H _{(A0 ~ A9)} L
H
L
L
Read
Active⁽³⁾ H
Read and Autoprecharge Active⁽³⁾ H
X
V
V
L
Column
L
H
L
H
address
X
V
V H _{(A0 ~ A9)} L
H
L
H
Mode Register Set
Idle
H XX
OP code
LLLL
No-Operation
Any
H X X XX
X
L HHH
Burst Stop
Active⁽⁴⁾ H
X X XX
X
L HH L
Device Deselect
Any
H X X XX
X
HXXX
AutoRefresh
Idle
H H X XX
X
L L LH
SelfRefresh Entry
Idle
H
L X XX
X
L L LH
SelfRefresh Exit
Idle
L
H X XX
X
(SelfRefresh)
HXXX
L HHH
Clock Suspend Mode Entry Active H
L X XX
X
HXXX
LVVV
Power Down Mode Entry
Any⁽⁵⁾
H
L X XX
X
HXXX
L HHH
Clock Suspend Mode Exit Active L
H X XX
X
XXXX
Power Down Mode Exit
Any
L
H X XX
X
HXXX
(PowerDown)
L HHH
Data Write/Output Enable Active H X L X X
X
XXXX
Data Mask/Output Disable Active H X H X X
X
XXXX
Note: 1. V=Valid, X=Don't Care, L=Low level, H=High level
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 BA 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.
Confidential
- 7/55 -
Rev.1.0 June 2016