iv
ATmega8535(L)
2502K–AVR–10/06
Prescaling and Conversion Timing ................................................................... 209
Changing Channel or Reference Selection ...................................................... 212
ADC Noise Canceler......................................................................................... 214
ADC Conversion Result.................................................................................... 218
Boot Loader Support – Read-While-Write Self-Programming..... 224
Boot Loader Features ....................................................................................... 224
Application and Boot Loader Flash Sections.................................................... 224
Read-While-Write and No Read-While-Write Flash Sections........................... 224
Boot Loader Lock Bits....................................................................................... 226
Entering the Boot Loader Program ................................................................... 227
Addressing the Flash during Self-Programming ............................................... 229
Self-Programming the Flash............................................................................. 230
Memory Programming..................................................................... 237
Program And Data Memory Lock Bits .............................................................. 237
Fuse Bits........................................................................................................... 238
Signature Bytes ................................................................................................ 239
Calibration Byte ................................................................................................ 239
Parallel Programming Parameters, Pin Mapping, and Commands .................. 240
Parallel Programming ....................................................................................... 242
Serial Downloading........................................................................................... 251
Electrical Characteristics................................................................ 255
Absolute Maximum Ratings*............................................................................. 255
DC Characteristics............................................................................................ 255
External Clock Drive Waveforms ...................................................................... 258
External Clock Drive ......................................................................................... 258
Two-wire Serial Interface Characteristics ......................................................... 259
SPI Timing Characteristics ............................................................................... 261
ADC Characteristics ......................................................................................... 263
ATmega8535 Typical Characteristics ............................................ 266
Register Summary ........................................................................... 299
Instruction Set Summary ................................................................ 301
Ordering Information....................................................................... 304
Packaging Information .................................................................... 306
44A ................................................................................................................... 306
40P6 ................................................................................................................. 307
44J.................................................................................................................... 308
44M1-A ............................................................................................................. 309
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