ATMEGA644PV ATMEL [ATMEL Corporation], ATMEGA644PV Datasheet - Page 406

• Manufacturer Part Number: ATMEGA644PV
• Description: 8-bit Microcontroller with 16/32/64K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

vi
ATmega164P/324P/644P
24 Boot Loader Support – Read-While-Write Self-Programming ......... 274
25 Memory Programming ......................................................................... 291
26 Electrical Characteristics .................................................................... 323
27 Typical Characteristics ........................................................................ 336
28 Register Summary ............................................................................... 386
24.1 Features .............................................................................................................274
24.2 Overview ............................................................................................................274
24.3 Application and Boot Loader Flash Sections ......................................................274
24.4 Read-While-Write and No Read-While-Write Flash Sections .............................275
24.5 Boot Loader Lock Bits ........................................................................................277
24.6 Entering the Boot Loader Program .....................................................................278
24.7 Addressing the Flash During Self-Programming ................................................279
24.8 Self-Programming the Flash ...............................................................................280
24.9 Register Description ...........................................................................................289
25.1 Program And Data Memory Lock Bits ................................................................291
25.2 Fuse Bits ............................................................................................................292
25.3 Signature Bytes ..................................................................................................294
25.4 Calibration Byte ..................................................................................................294
25.5 Page Size ...........................................................................................................294
25.6 Parallel Programming Parameters, Pin Mapping, and Commands ....................295
25.7 Parallel Programming .........................................................................................297
25.8 Serial Downloading ............................................................................................306
25.9 Serial Programming Instruction set ....................................................................308
25.10 Programming via the JTAG Interface ...............................................................310
26.1 DC Characteristics .............................................................................................323
26.2 Speed Grades ....................................................................................................327
26.3 Clock Characteristics ..........................................................................................328
26.4 System and Reset Characteristics .....................................................................329
26.5 External Interrupts Characteristics .....................................................................329
26.6 SPI Timing Characteristics .................................................................................330
26.7 2-wire Serial Interface Characteristics ................................................................331
26.8 ADC Characteristics ...........................................................................................333
27.1 ATmega164P Typical Characterization ..............................................................336
27.2 ATmega324P Typical Characteristics ................................................................361
8011D–AVR–02/07