ATMEGA32M1-MU Atmel, ATMEGA32M1-MU Datasheet - Page 198
ATMEGA32M1-MU
Manufacturer Part Number
ATMEGA32M1-MU
Description
MPU AVR 32K FLASH 20MHZ 32-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32M1-MU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
CAN, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of I /o
-
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20. LIN / UART - Local Interconnect Network Controller or UART
20.1
20.1.1
20.1.2
20.2
198
Features
Overview
ATmega16M1/32M1/64M1
LIN
UART
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The LIN (Local Interconnect Network) is a serial communications protocol which efficiently sup-
ports the control of mechatronics nodes in distributed automotive applications. The main
properties of the LIN bus are:
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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 Asynchronous
serial Receiver and Transmitter (UART).
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
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
Single master with multiple slaves concept
Low cost silicon implementation based on common UART/SCI interface
Self synchronization in slave node
Deterministic signal transmission with signal propagation time computable in advance
Low cost single-wire implementation
Speed up to 20 Kbit/s.
8209D–AVR–11/10
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