ATmega328P datasheet(446/448 Pages) ATMEL

446 / 448 page

8161D–AVR–10/09

ATmega48PA/88PA/168PA/328P

Self-Programming the Flash, ATmega48PA ...................................... 269

25.1Overview .............................................................................................................269

25.2Addressing the Flash During Self-Programming .................................................270

25.3Register Description ............................................................................................275

Boot Loader Support – Read-While-Write Self-Programming,

ATmega88PA, ATmega168PA and ATmega328P 277

26.1Features ..............................................................................................................277

26.2Overview .............................................................................................................277

26.3Application and Boot Loader Flash Sections .......................................................277

26.4Read-While-Write and No Read-While-Write Flash Sections ..............................278

26.5Boot Loader Lock Bits .........................................................................................280

26.6Entering the Boot Loader Program ......................................................................281

26.7Addressing the Flash During Self-Programming .................................................282

26.8Self-Programming the Flash ................................................................................282

26.9Register Description ............................................................................................292

Memory Programming ......................................................................... 294

27.1Program And Data Memory Lock Bits .................................................................294

27.2Fuse Bits .............................................................................................................295

27.3Signature Bytes ...................................................................................................298

27.4Calibration Byte ...................................................................................................298

27.5Page Size ............................................................................................................299

27.6Parallel Programming Parameters, Pin Mapping, and Commands .....................299

27.7Parallel Programming ..........................................................................................301

27.8Serial Downloading .............................................................................................308

Electrical Characteristics .................................................................... 313

28.1Absolute Maximum Ratings* ...............................................................................313

28.2DC Characteristics ..............................................................................................313

28.3Speed Grades .....................................................................................................316

28.4Clock Characteristics ...........................................................................................317

28.5System and Reset Characteristics ......................................................................318

28.6SPI Timing Characteristics ..................................................................................319

28.72-wire Serial Interface Characteristics .................................................................321

28.8ADC Characteristics ............................................................................................323

28.9Parallel Programming Characteristics .................................................................324

Typical Characteristics ........................................................................ 326

ATmega328P Datasheet(PDF) 446 Page - ATMEL Corporation