ATtiny261A datasheet(58/292 Pages) ATMEL

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ATtiny261A 데이터시트(PDF) 58 Page - ATMEL Corporation

부품명	ATtiny261A

상세설명	8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash

PDF	292 Pages

Scroll/Zoom	100%

제조업체	ATMEL [ATMEL Corporation]

홈페이지	http://www.atmel.com

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58 / 292 page

8197A–AVR–10/09

ATtiny261A/461A/861A

Note:

See “Code Examples” on page 6.

10.2 Alternate Port Functions

Most port pins have alternate functions in addition to being general digital I/Os. Figure 10-5

shows how the port pin control signals from the simplified Figure 10-2 can be overridden by

alternate functions. The overriding signals may not be present in all port pins, but the figure

serves as a generic description applicable to all port pins in the AVR microcontroller family.

C Code Example

unsigned char

...

/* Define pull-ups and set outputs high */

/* Define directions for port pins */

PORTB = (1<<PB4)|(1<<PB1)|(1<<PB0);

DDRB = (1<<DDB3)|(1<<DDB2)|(1<<DDB1)|(1<<DDB0);

/* Insert nop for synchronization*/

_NOP();

/* Read port pins */

i = PINB;

...

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