attiny261a-xu ATMEL Corporation, attiny261a-xu Datasheet - Page 287
attiny261a-xu
Manufacturer Part Number
attiny261a-xu
Description
8-bit Avr Microcontroller With 2/4/8k Bytes In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
1.ATTINY261A-XU.pdf
(292 pages)
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Table of Contents
8197B–AVR–01/10
1
2
3
4
5
6
7
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 4
General Information ................................................................................. 6
CPU Core .................................................................................................. 7
Memories ................................................................................................ 15
Clock System ......................................................................................... 24
Power Management and Sleep Modes ................................................. 34
1.1
2.1
3.1
3.2
3.3
4.1
4.2
4.3
4.4
4.5
4.6
4.7
5.1
5.2
5.3
5.4
5.5
6.1
6.2
6.3
6.4
6.5
7.1
7.2
Pin Descriptions .................................................................................................3
Block Diagram ...................................................................................................4
Resources .........................................................................................................6
Code Examples .................................................................................................6
Data Retention ...................................................................................................6
Architectural Overview .......................................................................................7
ALU – Arithmetic Logic Unit ...............................................................................8
Status Register ..................................................................................................8
General Purpose Register File ........................................................................10
Stack Pointer ...................................................................................................11
Instruction Execution Timing ...........................................................................12
Reset and Interrupt Handling ...........................................................................13
In-System Re-programmable Flash Program Memory ....................................15
SRAM Data Memory ........................................................................................15
EEPROM Data Memory ..................................................................................16
I/O Memory ......................................................................................................20
Register Description ........................................................................................20
Clock Subsystems ...........................................................................................24
Clock Sources .................................................................................................25
System Clock Prescaler ..................................................................................31
Clock Output Buffer .........................................................................................32
Register Description ........................................................................................32
Sleep Modes ....................................................................................................34
Software BOD Disable .....................................................................................35
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