AT90SCR100 datasheet(109/433 Pages) ATMEL

No. de pieza	AT90SCR100

Descripción Electrónicos	8-bit Microcontroller for Smart Card Readers

PDF	433 Pages

Scroll/Zoom	100%

Fabricante Electrónico	ATMEL [ATMEL Corporation]

Página de inicio	http://www.atmel.com

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109 / 433 page

109

TPR0327AY–SMS–30Jan09

AT90SCR100

Note:

1. The example code assumes that the part specific header file is included.

For I/O Registers located in extended I/O map, “IN”, “OUT”, “SBIS”, “SBIC”, “CBI”, and “SBI”

instructions must be replaced with instructions that allow access to extended I/O. Typically

“LDS” and “STS” combined with “SBRS”, “SBRC”, “SBR”, and “CBR”.

The assembly code example returns the TCNT1 value in the r17:r16 register pair.

Assembly Code Example(1)

TIM16_ReadTCNT1:

; Save global interrupt flag

r18,SREG

; Disable interrupts

cli

; Read TCNT1 into r17:r16

r16,TCNT1L

r17,TCNT1H

; Restore global interrupt flag

out

SREG,r18

ret

C Code Example(1)

unsigned int

TIM16_ReadTCNT1( void )

{

unsigned char

sreg;

unsigned int

/* Save global interrupt flag */

sreg = SREG;

/* Disable interrupts */

_CLI();

/* Read TCNT1 into i */

i = TCNT1;

/* Restore global interrupt flag */

SREG = sreg;

return

}

AT90SCR100 Datasheet(PDF) 109 Page - ATMEL Corporation