ata6625-taqy ATMEL Corporation, ata6625-taqy Datasheet - Page 10

• Manufacturer Part Number: ata6625-taqy
• Description: Lin Bus Transceiver With Integrated Vol Tage Regulator
• Manufacturer: ATMEL Corporation

5. Fail-safe Features
10
ATA6623/ATA6625
• During a short-circuit at LIN to V
• During a short-circuit from LIN to GND the IC can be switched into Sleep or Silent Mode. If
• The reverse current is very low < 15 µA at pin LIN during loss of V
• During a short circuit at VCC, the output limits the output current to I
• Pin EN provides a pull-down resistor to force the transceiver into Recessive Mode if EN is
• Pin RXD is set floating if V
• Pin TXD provides a pull-up resistor to force the transceiver into Recessive Mode if TXD is
• If TXD is short-circuited to GND, it is possible to switch to Sleep Mode via ENABLE after
the power dissipation, the chip temperature exceeds T
The chip cools down and after a hysteresis of T
on high because LIN is high. During LIN overtemperature switch-off, the V
working independently.
the short-circuit disappears, the IC starts with a remote wake-up.
behavior for bus systems where some slave nodes are supplied from battery or ignition.
undervoltage, NRES switches to low and sends a reset to the microcontroller. The IC
switches into Fail-safe 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 Fail-safe Mode, the V
switched off from the microcontroller.The microcontroller can then start with normal
operation.
disconnected.
disconnected.
tdom > 20 ms.
Batt
is disconnected.
Battery
, the output limits the output current to I
CC
voltage will switch on again although EN is
hys
, switches the output on again. RXD stays
LINoff
and the LIN output is switched off.
Batt
hys
VCCn
, switches the output on
or GND. This is optimal
. Because of
VCCoff
CC
BUS_LIM
regulator is
4957F–AUTO–02/08
, the V
. Due to
CC