参数资料
型号: S-812C52AY-Z-G
元件分类: 固定正电压单路输出LDO稳压器
英文描述: 5.2 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PBCY3
封装: LEAD FREE, TO-92, 3 PIN
文件页数: 5/39页
文件大小: 690K
代理商: S-812C52AY-Z-G
W946432AD
13
COMMANDS
Truth Table provides a quick reference of available commands. This is followed by a verbal description of
each command. The additional Function Truth Tables provide current state/ next state information.
TRUTH TABLE (NOTE 1, 2)
Symbol
Command
Device
State
CKEn-1 CKEn
DM
BA0,1
A8
A10,
A9-0
CS
RAS CAS
WE
ACT
Bank Active
Idle (3)
H
X
V
L
H
PRE
Bank Precharge
Any (3)
H
X
V
L
X
L
H
L
PREA
Precharge All
Any
H
X
H
X
L
H
L
WRIT
Write
Active (3)
H
X
V
L
V
L
H
L
WRITA
Write with Autoprecharge
Active (3)
H
X
V
H
V
L
H
L
READ
Read
Active (3)
H
X
V
L
V
L
H
L
H
READA Read with Autoprecharge
Active (3)
H
X
V
H
V
L
H
L
H
MRS
Mode Register Set
Idle
H
X
L,L
V
L
EMRS
Extended Mode Register Set
H
X
H,L
V
L
NOP
No-Operation
Any
H
X
L
H
BST
Burst Read Stop
Active (4)
H
X
L
H
L
DSL
Device Deselect
Any
H
X
H
X
AREF
Auto-Refresh
Idle
H
X
L
H
SELF
Self-Refresh Entry
Idle
H
L
X
L
H
SELEX
Self-Refresh Exit
Idle
(S.R)
L
H
X
H
L
X
H
X
H
X
PD
Power Down Mode Entry
Idle
Active (5)
H
L
X
H
L
X
H
X
H
X
PDEX
Power Down Mode Exit
Any
(Power down)
L
H
X
H
L
X
H
X
H
X
WDE
Data Write Enable
Active
H
X
L
X
WDD
Data Write Disable
Active
H
X
H
X
Notes:
(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 command provided.
(3) These are state of bank designated by BA0 BA1 signals.
(4) Applies only to read bursts with autoprecharge disabled; this command should not be used for read
bursts with autoprecharge enabled, and for write bursts.
(5) Power Down Mode can not be entered in the burst cycle.
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