ata6603 ATMEL Corporation, ata6603 Datasheet - Page 14
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ata6603
Manufacturer Part Number
ata6603
Description
Microcontroller With Lin Transceiver, 5v Regulator And Watchdog
Manufacturer
ATMEL Corporation
Datasheet
1.ATA6603.pdf
(360 pages)
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3.3.16
14
ATA6602/ATA6603
Fail-safe Features
Figure 3-7.
• During a short circuit at LIN, the output limits the output current to I
• The reverse current at pin LIN is very low (< 3 µA) during loss of V
• During a short circuit at V
• Pin EN provides a pull-down resistor to force the transceiver into recessive mode if EN is
• Pin RXD is connected with 5 k to V
• Pin TXD provides a pull-up resistor to force the transceiver into recessive mode if TXD is
LIN Bus
dissipation, the chip temperature exceeds T
cools down and after a hysteresis of T
overtemperature switch-off, the V
behavior for bus systems where some slave modes are supplied from battery or ignition.
undervoltage, NRES switches to low and sends a reset to the microcontroller. The IC
switches into Pre-normal mode. If the chip temperature exceeds the value T
output switches off. The chip cools down and after a hysteresis of T
again. Because of Pre-normal mode, the V
switched off from the microcontroller. The microcontroller can start its normal operation.
disconnected.
disconnected.
NRES
RXD
VCC
TXD
EN
If undervoltage, switch to Pre-normal Mode
Node in Silent mode
Wake Up Source Recognition
Wake-up filtering time
VLIN < V
VLIN > 0.6 V
Silent mode
High
High
DD
t
WAKE
, the output limits the output current to I
S
- 1V and
S
DD
Regulator Wake-up time
regulator works independently.
CC
hys
, if V
, switches the output on again. During LIN
DD
Batt
LINoff
voltage will switch on again although EN is
is disconnected V
and the LIN output is switched off. The chip
Pre-normal Mode
Pre-normal mode
Undervoltage detection active
Low
Low
CC
BAT
hys
BUS_LIM
VDDn
is at GND level
, switches the output on
or GND. This is optimal
. Because of
. Due to the power
VDDoff
Normal mode
4921D–AUTO–08/07
Normal Mode
EN High
, the V
DD
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