AT43USB355_06 datasheet(16/115 Pages) ATMEL

16 / 115 page

AT43USB355

2603G–USB–04/06

I/O Memory

The I/O space definition of the AT43USB355 is shown in the following table:

Table 5. I/O Memory Space

I/O (SRAM)

Address

Name

Function

$3F ($5F)

SREG

Status Register

$3E ($5E)

SPH

Stack Pointer High

$3D ($5D)

SPL

Stack Pointer Low

$3B ($5B)

GIMSK

General Interrupt Mask Register

$3A ($5A)

GIFR

General Interrupt Flag Register

$39 ($59)

TIMSK

Timer/Counter Interrupt Mask Register

$38 ($58)

TIFR

Timer/Counter Interrupt Flag Register

$35 ($55)

MCUCR

MCU General Control Register

$33 ($53)

TCCR0

Timer/Counter0 Control Register

$32 ($52)

TCNT0

Timer/Counter0 (8 bit)

$2F ($4F)

TCCR1A

Timer/Counter1 Control Register A

$2E ($4E)

TTCR1B

Timer/Counter1 Control Register B

$2D ($52)

TCNT1H

Timer/Counter1 High Byte

$2C ($52)

TCNT1L

Timer/Counter1 Low Byte

$2B ($4B)

OCR1AH

Timer/Counter1 Output Compare Register A High Byte

$2A ($4A)

OCR1AL

Timer/Counter1 Output Compare Register A Low Byte

$29 ($49)

OCR1BH

Timer/Counter1 Output Compare Register B High Byte

$28 ($48)

OCR1BL

Timer/Counter1 Output Compare Register B Low Byte

$25 ($45)

ICR1H

T/C 1 Input Capture Register High Byte

$24 ($44)

ICR1L

T/C 1 Input Capture Register Low Byte

$21 ($41)

WDTCR

Watchdog Timer Counter Register

$1B ($4B)

PORTA

Data Register, Port A

$1A ($3A)

DDRA

Data Direction Register, Port A

$19 ($39)

PINA

Input Pins, Port A

$18 ($38)

PORTB

Data Register, Port B

$17 ($37)

DDRB

Data Direction Register, Port B

$16 ($36)

PINB

Input Pins, Port B

$12 ($32)

PORTD

Data Register, Port D

$11 ($31)

DDRD

Data Direction Register, Port D

$10 ($30)

PIND

Input Pins, Port D

$0F ($2F)

SPDR

SPI I/O Data Register

$0E ($2E)

SPSR

SPI Status Register

$0D ($2D)

SPCR

SPI Control Register

$08 ($28)

ADMUX

ADC Mux Select Register

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