ATMEGA161-8PC View Datasheet(PDF) - Atmel Corporation

Part Name

Description

MFG CO.

ATMEGA161-8PC

8-bit Microcontroller with 16K Bytes of In-System Programmable Flash

Atmel Corporation 

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ATmega161(L)

I/O Memory

The I/O space definition of the ATmega161 is shown in the following table:

Table 1. ATmega161 I/O Space

I/O Address (SRAM Address)

$3F($5F)

$3E ($5E)

$3D ($5D)

$3B ($5B)

$3A ($5A)

$39 ($59)

$38 ($58)

$37 ($57)

$36 ($56)

$35 ($55)

$34 ($54)

$33 ($53)

$32 ($52)

$31 ($51)

$30 ($50)

$2F ($4F)

$2E ($4E)

$2D ($4D)

$2C ($4C)

$2B ($4B)

$2A ($4A)

$29 ($49)

$28 ($48)

$27 ($47)

$26 ($46)

$25 ($45)

$24 ($44)

$23 ($43)

$22 ($42)

$21 ($41)

$20 ($40)

$1F ($3F)

$1E ($3E)

$1D ($3D)

Name

SREG

SPH

SPL

GIMSK

GIFR

TIMSK

TIFR

SPMCR

EMCUCR

MCUCR

MCUSR

TCCR0

TCNT0

OCR0

SFIOR

TCCR1A

TCCR1B

TCNT1H

TCNT1L

OCR1AH

OCR1AL

OCR1BH

OCR1BL

TCCR2

ASSR

ICR1H

ICR1L

TCNT2

OCR2

WDTCR

UBRRHI

EEARH

EEARL

EEDR

Function

Status REGister

Stack Pointer High

Stack Pointer Low

General Interrupt MaSK register

General Interrupt Flag Register

Timer/Counter Interrupt MaSK Register

Timer/Counter Interrupt Flag Register

Store Program Memory Control Register

Extended MCU general Control Register

MCU general Control Register

MCU general Status Register

Timer/Counter0 Control Register

Timer/Counter0 (8-bit)

Timer/Counter0 Output Compare Register

Special Function IO Register

Timer/Counter1 Control Register A

Timer/Counter1 Control Register B

Timer/Counter1 High Byte

Timer/Counter1 Low Byte

Timer/Counter1 Output Compare RegisterA High Byte

Timer/Counter1 Output Compare RegisterA Low Byte

Timer/Counter1 Output Compare RegisterB High Byte

Timer/Counter1 Output Compare RegisterB Low Byte

Timer/Counter2 Control Register

Asynchronous mode StatuS Register

Timer/Counter1 Input Capture Register High Byte

Timer/Counter1 Input Capture Register Low Byte

Timer/Counter2 (8-bit)

Timer/Counter2 Output Compare Register

Watchdog Timer Control Register

UART Baud Register HIgh

EEPROM Address Register High

EEPROM Address Register Low

EEPROM Data Register

19

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