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ATmega32A Datasheet(PDF) 348 Page - ATMEL Corporation

Part # ATmega32A
Description  8-bit Microcontroller with 32K Bytes In-System Programmable Flash
PDF  352 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega32A Datasheet(HTML) 348 Page - ATMEL Corporation

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8155B–AVR–07/09
ATmega32A
18.2
Overview ........................................................................................................138
18.3
SS Pin Functionality ......................................................................................143
18.4
Data Modes ...................................................................................................145
19
USART ................................................................................................... 147
19.1
Features ........................................................................................................147
19.2
Overview ........................................................................................................147
19.3
Clock Generation ...........................................................................................149
19.4
Frame Formats ..............................................................................................152
19.5
USART Initialization .......................................................................................153
19.6
Data Transmission – The USART Transmitter ..............................................154
19.7
Data Reception – The USART Receiver .......................................................157
19.8
Asynchronous Data Reception ......................................................................161
19.9
Multi-processor Communication Mode ..........................................................164
19.10
Accessing UBRRH/ UCSRC Registers .........................................................165
19.11
Register Description ......................................................................................167
19.12
Examples of Baud Rate Setting .....................................................................172
20
Two-wire Serial Interface ..................................................................... 176
20.1
Features ........................................................................................................176
20.2
Two-wire Serial Interface Bus Definition ........................................................176
20.3
Data Transfer and Frame Format ..................................................................177
20.4
Multi-master Bus Systems, Arbitration and Synchronization .........................180
20.5
Overview of the TWI Module .........................................................................181
20.6
Using the TWI ................................................................................................184
20.7
Transmission Modes .....................................................................................186
20.8
Multi-master Systems and Arbitration ............................................................200
20.9
Register Description ......................................................................................201
21
Analog Comparator .............................................................................. 205
21.1
Overview ........................................................................................................205
21.2
Analog Comparator Multiplexed Input ...........................................................205
21.3
Register Description ......................................................................................206
22
Analog to Digital Converter ................................................................. 208
22.1
Features ........................................................................................................208
22.2
Overview ........................................................................................................208
22.3
Operation .......................................................................................................209
22.4
Starting a Conversion ....................................................................................210



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