Rainbow Electronics ATmega128RFA1 - Manual (Page 520)

520
8266A-MCU Wireless-12/09
ATmega128RFA1
18.8 Compare Match Output Unit............................................................................. 254
18.9 Modes of Operation .......................................................................................... 256
18.10 Timer/Counter Timing Diagrams .................................................................... 264
18.11 Register Description ....................................................................................... 266
19 Timer/Counter 0, 1, 3, 4, and 5 Prescaler .................................... 304
19.1 Internal Clock Source ....................................................................................... 304
19.2 Prescaler Reset ................................................................................................ 304
19.3 External Clock Source...................................................................................... 304
19.4 Register Description ......................................................................................... 305
20 Output Compare Modulator (OCM1C0A)..................................... 307
20.1 Overview........................................................................................................... 307
20.2 Description........................................................................................................ 307
20.3 Timing Example................................................................................................ 308
21 8-bit Timer/Counter2 with PWM and Asynchronous Operation 309
21.1 Features ........................................................................................................... 309
21.2 Overview........................................................................................................... 309
21.3 Timer/Counter Clock Sources .......................................................................... 310
21.4 Counter Unit ..................................................................................................... 311
21.5 Modes of Operation .......................................................................................... 311
21.6 Output Compare Unit ....................................................................................... 316
21.7 Compare Match Output Unit............................................................................. 317
21.8 Timer/Counter Timing Diagrams ...................................................................... 319
21.9 Asynchronous Operation of Timer/Counter2.................................................... 320
21.10 Timer/Counter Prescaler ................................................................................ 322
21.11 Register Description ....................................................................................... 323
22 SPI- Serial Peripheral Interface.................................................... 330
22.1 Features ........................................................................................................... 330
22.2 Functional Description...................................................................................... 330
22.3 SS
__
Pin Functionality ......................................................................................... 334
22.4 Register Description ......................................................................................... 336
23 USART............................................................................................ 339
23.1 Features ........................................................................................................... 339
23.2 Overview........................................................................................................... 339
23.3 Clock Generation.............................................................................................. 340
23.4 Frame Formats ................................................................................................. 343
23.5 USART Initialization ......................................................................................... 344