Datasheet

342
7810C–AVR–10/12
Atmel ATmega328P [Preliminary]
25.2 Addressing the Flash During Self-Programming ...........................................264
25.3 Register Description’ .....................................................................................269
26 Boot Loader Support – Read-While-Write Self-Programming ......... 271
26.1 Features ........................................................................................................271
26.2 Overview ........................................................................................................271
26.3 Application and Boot Loader Flash Sections .................................................271
26.4 Read-While-Write and No Read-While-Write Flash Sections ........................272
26.5 Boot Loader Lock Bits ...................................................................................274
26.6 Entering the Boot Loader Program ................................................................275
26.7 Addressing the Flash During Self-Programming ...........................................276
26.8 Self-Programming the Flash ..........................................................................277
26.9 Register Description ......................................................................................284
27 Memory Programming ......................................................................... 286
27.1 Program And Data Memory Lock Bits ...........................................................286
27.2 Fuse Bits ........................................................................................................287
27.3 Signature Bytes .............................................................................................289
27.4 Calibration Byte .............................................................................................289
27.5 Page Size ......................................................................................................290
27.6 Parallel Programming Parameters, Pin Mapping, and Commands ...............290
27.7 Parallel Programming ....................................................................................292
27.8 Serial Downloading ........................................................................................299
28 Electrical Characteristics .................................................................... 304
28.1 Absolute Maximum Ratings* .........................................................................304
28.2 DC Characteristics. ........................................................................................305
28.3 DC Characteristics .........................................................................................306
28.4 Speed Grades ...............................................................................................306
28.5 Clock Characteristics .....................................................................................307
28.6 System and Reset Characteristics ................................................................308
28.7 SPI Timing Characteristics ............................................................................309
28.8 2-wire Serial Interface Characteristics ...........................................................311
28.9 ADC Characteristics .....................................................................................312
28.10 Parallel Programming Characteristics ...........................................................312
29 Typical Characteristics ........................................................................ 315
29.1 ATmega328P Typical Characteristics ...........................................................316