ATMEGA32A-MNR Atmel, ATMEGA32A-MNR Datasheet - Page 349

• Manufacturer Part Number: ATMEGA32A-MNR
• Description: IC MCU AVR 32K 16MHZ 44VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32A-MNR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• 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 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8155C–AVR–02/11
19 USART ................................................................................................... 147
20 Two-wire Serial Interface ..................................................................... 177
21 Analog Comparator ............................................................................. 206
22 Analog to Digital Converter ................................................................ 209
18.2
18.3
18.4
19.1
19.2
19.3
19.4
19.5
19.6
19.7
19.8
19.9
19.10
19.11
19.12
20.1
20.2
20.3
20.4
20.5
20.6
20.7
20.8
20.9
21.1
21.2
21.3
22.1
22.2
22.3
22.4
Overview ........................................................................................................138
SS Pin Functionality ......................................................................................143
Data Modes ...................................................................................................145
Features ........................................................................................................147
Overview ........................................................................................................147
Clock Generation ...........................................................................................149
Frame Formats ..............................................................................................152
USART Initialization .......................................................................................153
Data Transmission – The USART Transmitter ..............................................154
Data Reception – The USART Receiver .......................................................157
Asynchronous Data Reception ......................................................................161
Multi-processor Communication Mode ..........................................................164
Accessing UBRRH/ UCSRC Registers .........................................................165
Register Description ......................................................................................167
Examples of Baud Rate Setting .....................................................................172
Features ........................................................................................................177
Two-wire Serial Interface Bus Definition ........................................................177
Data Transfer and Frame Format ..................................................................178
Multi-master Bus Systems, Arbitration and Synchronization .........................181
Overview of the TWI Module .........................................................................182
Using the TWI ................................................................................................185
Transmission Modes .....................................................................................187
Multi-master Systems and Arbitration ............................................................201
Register Description ......................................................................................202
Overview ........................................................................................................206
Analog Comparator Multiplexed Input ...........................................................206
Register Description ......................................................................................207
Features ........................................................................................................209
Overview ........................................................................................................209
Operation .......................................................................................................210
Starting a Conversion ....................................................................................211
ATmega32A
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