ATtiny167-ESSZ datasheet(162/282 Pages) ATMEL

162 / 282 page

162

7728D–AVR–07/09

ATtiny87/ATtiny167

15. LIN / UART - Local Interconnect Network Controller or UART

The LIN (Local Interconnect Network) is a serial communications protocol which efficiently

supports the control of mechatronics nodes in distributed automotive applications. The main

properties of the LIN bus are:

• Single master with multiple slaves concept

• Low cost silicon implementation based on common UART/SCI interface

• Self synchronization with on-chip oscillator in slave node

• Deterministic signal transmission with signal propagation time computable in advance

• Low cost single-wire implementation

• Speed up to 20 Kbit/s.

LIN provides a cost efficient bus communication where the bandwidth and versatility of CAN

are not required. The specification of the line driver/receiver needs to match the ISO9141

NRZ-standard.

If LIN is not required, the controller alternatively can be programmed as Universal Asynchro-

nous serial Receiver and Transmitter (UART).

15.1

LIN Features

• Hardware Implementation of LIN 2.1 (LIN 1.3 Compatibility)

• Small, CPU Efficient and Independent Master/Slave Routines Based on “LIN Work Flow

Concept” of LIN 2.1 Specification

• Automatic LIN Header Handling and Filtering of Irrelevant LIN Frames

• Automatic LIN Response Handling

• Extended LIN Error Detection and Signaling

• Hardware Frame Time-out Detection

• “Break-in-data” Support Capability

• Automatic Re-synchronization to Ensure Proper Frame Integrity

• Fully Flexible Extended Frames Support Capabilities

15.2

UART Features

• Full Duplex Operation (Independent Serial Receive and Transmit Processes)

• Asynchronous Operation

• High Resolution Baud Rate Generator

• Hardware Support of 8 Data Bits, Odd/Even/No Parity Bit, 1 Stop Bit Frames

• Data Over-Run and Framing Error Detection

ATtiny167-ESSZ датащи(PDF) 162 Page - ATMEL Corporation