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ATA6623 Datasheet(PDF) 5 Page - ATMEL Corporation

Part # ATA6623
Description  Linear Low-drop Voltage Regulator
PDF  24 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATA6623 Datasheet(HTML) 5 Page - ATMEL Corporation

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5
4957H–AUTO–05/10
ATA6623/ATA6625
4.
Mode of Operation
Figure 4-1.
Mode of Operation
Unpowered Mode
V
Batt = 0V
a: V
S > 5V
b: V
S < 4V
c: Bus wake-up event
d: NRES switches to low
Fail-safe Mode
Normal Mode
VCC: 3.3V/5V/50 mA
with undervoltage
monitoring
Communication: ON
VCC: 3.3V/5V/50 mA
with undervoltage monitoring
Communication: OFF
Silent Mode
VCC: 3.3V/5V/50 mA
with undervoltage monitoring
Communication: OFF
Sleep Mode
VCC: switched off
Communication: OFF
Go to silent command
a
TXD = 0
EN = 0
TXD = 1
EN = 0
EN = 1
EN = 1
EN = 1
b
b
b
c + d
d
c
b
Local wake-up event
Go to sleep command
Table 4-1.
Mode of Operation
Mode of
Operation
Transceiver
VCC
RXD
LIN
Fail safe
OFF
3.3V/5V
High,
Except after wake-up
Recessive
Normal
ON
3.3V/5V
LIN depending
TXD depending
Silent
OFF
3.3V/5V
High
Recessive
Sleep
OFF
0V
0V
Recessive



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