ATA6602 ATMEL Corporation, ATA6602 Datasheet - Page 66

• Manufacturer Part Number: ATA6602
• Description: LIN and Microcontroller System-In-Package: LIN Transceiver, integrated 5V/50 mA voltage regulator, window watchdog and automotive AVR ATmega88 (8 kBytes Flash); green QFN48 package.
• Manufacturer: ATMEL Corporation

4.8.2
Figure 4-15. Reset Logic
66
BODLEVEL [2..0]
RSTDISBL
ATA6602/ATA6603
Reset Sources
RESET
VCC
Pull-up Resistor
FILTER
SPIKE
The ATA6602/ATA6603 has four sources of reset:
• Power-on Reset. The MCU is reset when the supply voltage is below the Power-on Reset
• External Reset. The MCU is reset when a low level is present on the RESET pin for longer
• Watchdog System Reset. The MCU is reset when the Watchdog Timer period expires and
• Brown-out Reset. The MCU is reset when the supply voltage V
threshold (V
than the minimum pulse length.
the Watchdog System Reset mode is enabled.
Reset threshold (V
POT
CKSEL[3:0]
Power-on Reset
).
Reset Circuit
SUT[1:0]
Brown-out
Watchdog
Watchdog
Oscillator
Generator
Circuit
Circuit
BOT
Reset
Timer
Clock
) and the Brown-out Detector is enabled.
CK
Register (MCUSR)
MCU Status
DATA BUS
Delay Counters
TIMEOUT
CC
is below the Brown-out
S
R
Q
4921C–AUTO–01/07