ATmega32 Atmel Corporation, ATmega32 Datasheet - Page 343

• Manufacturer Part Number: ATmega32
• Manufacturer: Atmel Corporation

Specifications of ATmega32

• 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

2503Q–AVR–02/11
Serial Peripheral Interface – SPI 132
USART 140
Two-wire Serial Interface 169
Analog Comparator 198
Analog to Digital Converter 201
Counter Unit 115
Output Compare Unit 116
Compare Match Output Unit 117
Modes of Operation 118
Timer/Counter Timing Diagrams 123
8-bit Timer/Counter Register Description 125
Asynchronous Operation of the Timer/Counter 128
Timer/Counter Prescaler 131
SS Pin Functionality 136
Data Modes 139
Overview 140
Clock Generation 141
Frame Formats 144
USART Initialization 146
Data Transmission – The USART Transmitter 147
Data Reception – The USART Receiver 150
Asynchronous Data Reception 153
Multi-processor Communication Mode 157
Accessing UBRRH/ UCSRC Registers 158
USART Register Description 159
Examples of Baud Rate Setting 165
Features 169
Two-wire Serial Interface Bus Definition 169
Data Transfer and Frame Format 170
Multi-master Bus Systems, Arbitration and Synchronization 172
Overview of the TWI Module 175
TWI Register Description 177
Using the TWI 180
Transmission Modes 183
Multi-master Systems and Arbitration 196
Analog Comparator Multiplexed Input 200
Features 201
Operation 202
Starting a Conversion 203
Prescaling and Conversion Timing 204
Changing Channel or Reference Selection 207
ATmega32(L)
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