ATmega644PR231 Atmel Corporation, ATmega644PR231 Datasheet - Page 436

• Manufacturer Part Number: ATmega644PR231
• Manufacturer: Atmel Corporation

Specifications of ATmega644PR231

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Max I/o Pins: 32
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Crypto Engine: AES
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• Operating Voltage (vcc): 1.8 to 3.6
• Timers: 3
• Frequency Band: 2.4 GHz
• Max Data Rate (mb/s): 2
• Antenna Diversity: Yes
• External Pa Control: Yes
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -101
• Receive Current Consumption (ma): 13.2
• Transmit Current Consumption (ma): 14.4
• Link Budget (dbm): 104

8011O–AVR–07/10
22 IEEE 1149.1 (JTAG) Boundary-scan ................................................... 266
23 Boot Loader Support – Read-While-Write Self-Programming ......... 276
24 Memory Programming ......................................................................... 293
25 Electrical Characteristics .................................................................... 325
22.1 Features .............................................................................................................266
22.2 Overview ............................................................................................................266
22.3 Data Registers ....................................................................................................267
22.4 Boundary-scan Specific JTAG Instructions ........................................................268
22.5 Boundary-scan Chain .........................................................................................269
22.6 ATmega164P/324P/644P Boundary-scan Order ...............................................272
22.7 Boundary-scan Description Language Files .......................................................274
22.8 Register Description ...........................................................................................275
23.1 Features .............................................................................................................276
23.2 Overview ............................................................................................................276
23.3 Application and Boot Loader Flash Sections ......................................................276
23.4 Read-While-Write and No Read-While-Write Flash Sections .............................277
23.5 Boot Loader Lock Bits ........................................................................................279
23.6 Entering the Boot Loader Program .....................................................................280
23.7 Addressing the Flash During Self-Programming ................................................281
23.8 Self-Programming the Flash ...............................................................................282
23.9 Register Description ...........................................................................................291
24.1 Program And Data Memory Lock Bits ................................................................293
24.2 Fuse Bits ............................................................................................................294
24.3 Signature Bytes ..................................................................................................296
24.4 Calibration Byte ..................................................................................................296
24.5 Page Size ...........................................................................................................296
24.6 Parallel Programming Parameters, Pin Mapping, and Commands ....................297
24.7 Parallel Programming .........................................................................................299
24.8 Serial Downloading ............................................................................................308
24.9 Serial Programming Instruction set ....................................................................310
24.10 Programming via the JTAG Interface ...............................................................312
25.1 DC Characteristics .............................................................................................325
25.2 Speed Grades ....................................................................................................329
25.3 Clock Characteristics ..........................................................................................330
25.4 System and Reset Characteristics .....................................................................331
ATmega164P/324P/644P
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