ATMEGA48-15AZV 데이터 시트보기 (PDF) - Atmel Corporation

부품명

상세내역

제조사

ATMEGA48-15AZV

8-bit Microcontroller with 8K Bytes In-System Programmable Flash

Atmel Corporation 

Atmel ATmega48/88/168 Automotive

Problem Fix/Workaround

None.

Note:

Please note from datasheet 7530F-AVR-09/07 we introduce a new errata numbering scheme

(Errata Rev E of datasheet 7530E-AVR-03/07 is equivalent to Errata Rev D of datasheet

7530F-AVR-09/07)

34. Errata ATmega88

The revision letter in this section refers to the revision of the ATmega88 device.

34.1 Rev. G

• 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

If one of the timer registers which is synchronized to the asynchronous timer2 clock is written in

the cycle before an overflow interrupt occurs, the interrupt may be lost.

Problem Fix/Workaround

Always check that the Timer2 Timer/Counter register, TCNT2, does not have the value 0xFF

before writing the Timer2 Control Register, TCCR2, or Output Compare Register, OCR2.

34.2 Rev. E

• Interrupts may be lost when writing the timer registers in the asynchronous timer

• POR sensitivity with Vcc ramp up from a very low supply voltage

1. Interrupts may be lost when writing the timer registers in the asynchronous timer

If one of the timer registers which is synchronized to the asynchronous timer2 clock is written in

the cycle before an overflow interrupt occurs, the interrupt may be lost.

Problem Fix/Workaround

Always check that the Timer2 Timer/Counter register, TCNT2, does not have the value 0xFF

before writing the Timer2 Control Register, TCCR2, or Output Compare Register, OCR2.

2. POR sensitivity with Vcc ramp up from a very low supply voltage

If Vcc ramp up from a stable 150mV to 300mV plateau, the Power On Reset (POR) may not

reset the device properly.

Problem Fix/Workaround

None.

Note:

Please note from datasheet 7530F-AVR-09/07 we introduce a new errata numbering scheme

(Errata Rev F of datasheet 7530E-AVR-03/07 is equivalent to Errata Rev E of datasheet

7530F-AVR-09/07)

7530J–AVR–03/12

329

Share Link: