Datasheet

vi
8284D–AVR–6/11
ATmega169A/PA/329A/PA/3290A/PA/649A/P/6490A/P
26.5Boundary-scan Chain ..........................................................................................264
26.6ATmega169A/169PA/329A/329PA/3290A/3290PA/649A/649P/6490A/6490P
Boundary-scan Order 273
26.7Boundary-scan Description Language Files ........................................................292
26.8Register Description ............................................................................................293
27 Boot Loader Support – Read-While-Write Self-Programming ......... 294
27.1Features ..............................................................................................................294
27.2Overview .............................................................................................................294
27.3Application and Boot Loader Flash Sections .......................................................294
27.4Read-While-Write and No Read-While-Write Flash Sections ..............................295
27.5Boot Loader Lock Bits .........................................................................................297
27.6Entering the Boot Loader Program ......................................................................299
27.7Addressing the Flash During Self-Programming .................................................299
27.8Self-Programming the Flash ................................................................................300
27.9Register Description ............................................................................................307
28 Memory Programming ......................................................................... 310
28.1Program And Data Memory Lock Bits .................................................................310
28.2Fuse Bits .............................................................................................................311
28.3Signature Bytes ...................................................................................................313
28.4Calibration Byte ...................................................................................................313
28.5Page Size ............................................................................................................313
28.6Parallel Programming Parameters, Pin Mapping, and Commands .....................314
28.7Parallel Programming ..........................................................................................316
28.8Serial Downloading .............................................................................................325
28.9Programming via the JTAG Interface ..................................................................331
29 Electrical Characteristics .................................................................... 344
29.1Absolute Maximum Ratings* ...............................................................................344
29.2DC Characteristics ..............................................................................................344
29.3Speed Grades .....................................................................................................351
29.4Clock Characteristics ...........................................................................................352
29.5System and Reset Characteristics ......................................................................353
29.6Power-on Reset ...................................................................................................353
29.7Brown-out Detection ............................................................................................354
29.8External Interrupts Characteristics ......................................................................354
29.9SPI Timing Characteristics ..................................................................................355