ATmega32A Atmel Corporation, ATmega32A Datasheet - Page 349

• Manufacturer Part Number: ATmega32A
• Manufacturer: Atmel Corporation

Specifications of ATmega32A

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

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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