ATmega1284P Atmel Corporation, ATmega1284P Datasheet - Page 579

• Manufacturer Part Number: ATmega1284P
• Manufacturer: Atmel Corporation

Specifications of ATmega1284P

• Flash (kbytes): 128 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• 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): 16
• Eeprom (bytes): 4096
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8272C–AVR–06/11
18 SPI – Serial Peripheral Interface ......................................................... 164
19 USART ................................................................................................... 174
20 USART in SPI Mode ............................................................................. 201
21 Two-wire Serial Interface ..................................................................... 210
17.6Compare Match Output Unit ................................................................................146
17.7Modes of Operation .............................................................................................147
17.8Timer/Counter Timing Diagrams .........................................................................151
17.9Asynchronous Operation of Timer/Counter2 .......................................................153
17.10Timer/Counter Prescaler ...................................................................................155
17.11Register Description ..........................................................................................156
18.1Features ..............................................................................................................164
18.2Overview .............................................................................................................164
18.3SS Pin Functionality ............................................................................................169
18.4Data Modes .........................................................................................................169
18.5Register Description ............................................................................................171
19.1Features ..............................................................................................................174
19.2USART1 and USART0 ........................................................................................174
19.3Overview .............................................................................................................174
19.4Clock Generation .................................................................................................175
19.5Frame Formats ....................................................................................................178
19.6USART Initialization ............................................................................................179
19.7Data Transmission – The USART Transmitter ....................................................180
19.8Data Reception – The USART Receiver .............................................................183
19.9Asynchronous Data Reception ............................................................................187
19.10Multi-processor Communication Mode ..............................................................190
19.11Register Description ..........................................................................................192
19.12Examples of Baud Rate Setting ........................................................................197
20.1Features ..............................................................................................................201
20.2Overview .............................................................................................................201
20.3Clock Generation .................................................................................................201
20.4SPI Data Modes and Timing ...............................................................................202
20.5Frame Formats ....................................................................................................202
20.6Data Transfer ......................................................................................................204
20.7AVR USART MSPIM vs. AVR SPI ......................................................................206
20.8Register Description ............................................................................................207
ATmega164A/PA/324A/PA/644A/PA/1284/P
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