ATmega328P datasheet(264/448 Pages) ATMEL

номер детали	ATmega328P

подробное описание детали	8-bit Microcontroller with 4/8/16/32K Bytes In-System Programmable Flash

PDF	448 Pages

Scroll/Zoom	100%

производитель	ATMEL [ATMEL Corporation]

домашняя страница	http://www.atmel.com

Logo

264 / 448 page

264

8161D–AVR–10/09

ATmega48PA/88PA/168PA/328P

• Bit 5 – ADATE: ADC Auto Trigger Enable

When this bit is written to one, Auto Triggering of the ADC is enabled. The ADC will start a con-

version on a positive edge of the selected trigger signal. The trigger source is selected by setting

the ADC Trigger Select bits, ADTS in ADCSRB.

• Bit 4 – ADIF: ADC Interrupt Flag

This bit is set when an ADC conversion completes and the Data Registers are updated. The

ADC Conversion Complete Interrupt is executed if the ADIE bit and the I-bit in SREG are set.

ADIF is cleared by hardware when executing the corresponding interrupt handling vector. Alter-

natively, ADIF is cleared by writing a logical one to the flag. Beware that if doing a Read-Modify-

Write on ADCSRA, a pending interrupt can be disabled. This also applies if the SBI and CBI

instructions are used.

• Bit 3 – ADIE: ADC Interrupt Enable

When this bit is written to one and the I-bit in SREG is set, the ADC Conversion Complete Inter-

rupt is activated.

• Bits 2:0 – ADPS2:0: ADC Prescaler Select Bits

These bits determine the division factor between the system clock frequency and the input clock

to the ADC.

Table 23-5.

ADC Prescaler Selections

ADPS2

ADPS1

ADPS0

Division Factor

128

ATmega328P датащи(PDF) 264 Page - ATMEL Corporation