26
2552KS–AVR–04/11
ATmega329/3290/649/6490
10.3
ATmega649
10.3.1
ATmega649 rev. A
Interrupts may be lost when writing the timer registers in the asynchronous timer
1.
Interrupts may be lost when writing the timer registers in the asynchronous timer
The interrupt will be lost if a timer register that is synchronous timer clock is written when the
asynchronous Timer/Counter register (TCNTx) is 0x00.
Problem Fix/Wortkaround
Always check that the asynchronous Timer/Counter register neither have the value 0xFF nor
0x00 before writing to the asynchronous Timer Control Register (TCCRx), asynchronous
Timer Counter Register (TCNTx), or asynchronous Output Compare Register (OCRx).
10.4
ATmega6490
10.4.1
ATmega6490 rev. A
Interrupts may be lost when writing the timer registers in the asynchronous timer
1.
Interrupts may be lost when writing the timer registers in the asynchronous timer
The interrupt will be lost if a timer register that is synchronous timer clock is written when the
asynchronous Timer/Counter register (TCNTx) is 0x00.
Problem Fix/Wortkaround
Always check that the asynchronous Timer/Counter register neither have the value 0xFF nor
0x00 before writing to the asynchronous Timer Control Register (TCCRx), asynchronous
Timer Counter Register (TCNTx), or asynchronous Output Compare Register (OCRx).
相关PDF资料
5172069-3 DRAWER CONN 12P FEMALE
ATMEGA3290V-8AI IC AVR MCU 32K 8MHZ 100TQFP
166570-8 IEC MALE HSG.ASSY.
ATMEGA325V-8AI IC AVR MCU 32K 8MHZ 64TQFP
ATMEGA325-16MI IC AVR MCU 32K 16MHZ 64-QFN
ATMEGA325-16AI IC AVR MCU 32K 16MHZ 64TQFP
PIC16C71-20/P IC MCU OTP 1KX14 A/D 18DIP
1-166570-0 IEC MALE HSG.ASSY.
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