vi
8209A–AVR–08/09
ATmega16M1/32M1/64M1
27.1 Overview ........................................................................................................272
27.2 Application and Boot Loader Flash Sections .................................................272
27.3 Read-While-Write and No Read-While-Write Flash Sections ........................273
27.4 Boot Loader Lock Bits ...................................................................................275
27.5 Entering the Boot Loader Program ................................................................276
27.6 Addressing the Flash During Self-Programming ...........................................277
27.7 Self-Programming the Flash ..........................................................................278
27.8 Register Description ......................................................................................287
28 Memory Programming ......................................................................... 289
28.1 Program And Data Memory Lock Bits ...........................................................289
28.2 Fuse Bits ........................................................................................................290
28.3 PSC Output Behavior During Reset ..............................................................291
28.4 Signature Bytes .............................................................................................293
28.5 Calibration Byte .............................................................................................293
28.6 Page Size ......................................................................................................294
28.7 Parallel Programming Parameters, Pin Mapping, and Commands ...............294
28.8 Serial Programming Pin Mapping ..................................................................296
28.9 Parallel Programming ....................................................................................296
28.10 Serial Downloading ........................................................................................305
29 Electrical Characteristics .................................................................... 309
29.1 Absolute Maximum Ratings* .........................................................................309
29.2 DC Characteristics .........................................................................................309
29.3 Speed Grades ...............................................................................................311
29.4 Clock Characteristics .....................................................................................312
29.5 External Clock Drive Characteristics .............................................................312
29.6 System and Reset Characteristics ................................................................313
29.7 PLL Characteristics .......................................................................................314
29.8 SPI Timing Characteristics ............................................................................314
29.9 ADC Characteristics .....................................................................................316
29.10 Parallel Programming Characteristics ...........................................................318
30 Typical Characteristics – TBD ............................................................ 321
31 Register Summary ............................................................................... 322
32 Instruction Set Summary ..................................................................... 326
33 Errata ..................................................................................................... 329
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