ATA6612-EK Atmel, ATA6612-EK Datasheet - Page 77
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ATA6612-EK
Manufacturer Part Number
ATA6612-EK
Description
BOARD DEMO LIN-MCM FOR ATA6612
Manufacturer
Atmel
Specifications of ATA6612-EK
Main Purpose
Interface, LIN + MCU
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
ATA6612
Primary Attributes
LIN-SBC (System-Basis-Chip) Transceiver, LIN 2.0, Voltage Regulator, Window Watchdog
Secondary Attributes
8 kB Flash, 4 Power Modes: Pre-Normal, Normal, Sleep, Silent, 48-QFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- Current page: 77 of 364
- Download datasheet (7Mb)
9111H–AUTO–01/11
The following code example shows one assembly and one C function for changing the
time-out value of the Watchdog Timer.
Note:
Note: The Watchdog Timer should be reset before any change of the WDP bits, since a
change in the WDP bits can result in a time-out when switching to a shorter time-out period.
Assembly Code Example
C Code Example
WDT_Prescaler_Change:
void WDT_Prescaler_Change(void)
{
}
; Turn off global interrupt
cli
; Reset Watchdog Timer
wdr
; Start timed sequence
lds r16, WDTCSR
ori
sts WDTCSR, r16
; --
; Set new prescaler(time-out) value = 64K cycles (~0.5 s)
ldi
sts WDTCSR, r16
; --
; Turn on global interrupt
sei
ret
__disable_interrupt();
__watchdog_reset();
/* Start timed
WDTCSR |= (1<<WDCE) | (1<<WDE);
/* Set new prescaler(time-out) value = 64K cycles (~0.5 s) */
WDTCSR
__enable_interrupt();
1. The example code assumes that the part specific header file is included.
r16, (1<<WDCE) | (1<<WDE)
Got four cycles to set the new values from here -
r16, (1<<WDE) | (1<<WDP2) | (1<<WDP0)
Finished setting new values, used 2 cycles -
= (1<<WDE) | (1<<WDP2) | (1<<WDP0);
(1)
(1)
equence */
Atmel ATA6612/ATA6613
77
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