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ATmega8A Data Sheet
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25
TWI - Two-wire Serial Interface
Introduction
Features
1
Description
2
Configuration Summary
3
Ordering Information
4
Block Diagram
5
Pin Configurations
6
I/O Multiplexing
7
Resources
8
Data Retention
9
About Code Examples
10
Capacitive Touch Sensing
11
AVR CPU Core
12
AVR Memories
13
System Clock and Clock Options
14
Power Management and Sleep Modes
15
System Control and Reset
16
Interrupts
17
External Interrupts
18
I/O Ports
19
8-bit Timer/Counter
0
20
Timer/Counter
0
and Timer/Counter1 Prescalers
21
16-bit Timer/Counter1
22
8-bit Timer/Counter
2
with PWM and Asynchronous Operation
23
SPI – Serial Peripheral Interface
24
USART - Universal Synchronous and Asynchronous serial Receiver and Transmitter
25
TWI - Two-wire Serial Interface
25.1
Features
25.2
Overview
25.3
Two-Wire Serial Interface Bus Definition
25.4
Data Transfer and Frame Format
25.5
Multi-master Bus Systems, Arbitration and Synchronization
25.6
Using the TWI
25.7
Multi-master Systems and Arbitration
25.8
Register Description
26
AC - Analog Comparator
27
ADC - Analog to Digital Converter
28
BTLDR - Boot Loader Support – Read-While-Write Self-Programming
29
MEMPROG- Memory Programming
30
Electrical Characteristics – TA = -40°C to 85°C
31
Electrical Characteristics – TA = -40°C to 105°C
32
Typical Characteristics – TA = -40°C to 85°C
33
Typical Characteristics – TA = -40°C to 105°C
34
Register Summary
35
Instruction Set Summary
36
Packaging Information
37
Errata
38
Appendix A: Revision History
The Microchip Web Site
Customer Change Notification Service
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25 TWI - Two-wire Serial Interface
