ata6603 ATMEL Corporation, ata6603 Datasheet - Page 72
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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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4.8.9
72
ATA6602/ATA6603
Watchdog Timer
Table 4-23.
Note:
ATA6602/ATA6603 has an Enhanced Watchdog Timer (WDT). The main features are:
Figure 4-21. Watchdog Timer
The Watchdog Timer (WDT) is a timer counting cycles of a separate on-chip 128 kHz oscillator.
The WDT gives an interrupt or a system reset when the counter reaches a given time-out value.
In normal operation mode, it is required that the system uses the WDR - Watchdog Timer Reset
- instruction to restart the counter before the time-out value is reached. If the system doesn't
restart the counter, an interrupt or system reset will be issued.
• Clocked from separate On-chip Oscillator
• 3 Operating modes
• Selectable Time-out period from 16 ms to 8s
• Possible Hardware fuse Watchdog always on (WDTON) for fail-safe mode
Symbol
V
t
I
BG
BG
BG
– Interrupt
– System Reset
– Interrupt and System Reset
1. Values are guidelines only. Actual values are TBD.
Parameter
Bandgap reference voltage
Bandgap reference start-up time
Bandgap reference current consumption
WATCHDOG
RESET
OSCILLATOR
Internal Voltage Reference Characteristics
128kHz
WDIE
WDIF
WDE
PRESCALER
WATCHOG
Condition
TBD
TBD
TBD
(1)
Min
1.0
WDP0
WDP1
WDP2
WDP3
MCU RESET
INTERRUPT
Typ
1.1
40
10
4921D–AUTO–08/07
Max
TBD
1.2
70
Units
µA
µs
V
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