Datasheet

v
8284D–AVR–6/11
ATmega169A/PA/329A/PA/3290A/PA/649A/P/6490A/P
22.1Overview .............................................................................................................216
22.2Analog Comparator Multiplexed Input .................................................................216
22.3Register Description ............................................................................................217
23 Analog to Digital Converter ................................................................ 219
23.1Features ..............................................................................................................219
23.2Overview .............................................................................................................219
23.3Operation .............................................................................................................220
23.4Starting a Conversion ..........................................................................................221
23.5Prescaling and Conversion Timing ......................................................................222
23.6Changing Channel or Reference Selection .........................................................224
23.7ADC Noise Canceler ...........................................................................................226
23.8ADC Conversion Result ......................................................................................230
23.9Register Description ............................................................................................232
24 LCD Controller ..................................................................................... 237
24.1Features ..............................................................................................................237
24.2Overview .............................................................................................................237
24.3Mode of Operation ...............................................................................................240
24.4LCD Usage ..........................................................................................................244
24.5Register Description ............................................................................................248
25 JTAG Interface and On-chip Debug System ..................................... 255
25.1Features ..............................................................................................................255
25.2Overview .............................................................................................................255
25.3TAP – Test Access Port ......................................................................................255
25.4TAP Controller .....................................................................................................257
25.5Using the Boundary-scan Chain ..........................................................................258
25.6Using the On-chip Debug System .......................................................................258
25.7On-chip Debug Specific JTAG Instructions .........................................................259
25.8Using the JTAG Programming Capabilities .........................................................259
25.9Bibliography .........................................................................................................260
25.10Register Description ..........................................................................................260
26 IEEE 1149.1 (JTAG) Boundary-scan ................................................... 261
26.1Features ..............................................................................................................261
26.2Overview .............................................................................................................261
26.3Data Registers .....................................................................................................262
26.4Boundary-scan Specific JTAG Instructions .........................................................263