ata6603 ATMEL Corporation, ata6603 Datasheet - Page 67

• Manufacturer Part Number: ata6603
• Description: Microcontroller With Lin Transceiver, 5v Regulator And Watchdog
• Manufacturer: ATMEL Corporation

4.8.2
Figure 4-15. Reset Logic
4921D–AUTO–08/07
BODLEVEL [2..0]
RSTDISBL
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
ATA6602/ATA6603
TIMEOUT
CC
is below the Brown-out
S
R
Q
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