ATMEGA128RFA1_12 Datasheet, PDF (563/568 Pages) ATMEL Corporation – Microcontroller with Low Power 2.4GHz Transceiver for ZigBee and IEEE 802.15.4

8266D-MCU Wireless-06/12
ATmega128RFA1
18.4 Timer/Counter Clock Sources .......................................................................... 252
18.5 Counter Unit ..................................................................................................... 252
18.6 Input Capture Unit ............................................................................................ 253
18.7 Output Compare Units...................................................................................... 255
18.8 Compare Match Output Unit............................................................................. 257
18.9 Modes of Operation .......................................................................................... 259
18.10 Timer/Counter Timing Diagrams .................................................................... 267
18.11 Register Description ....................................................................................... 269
19 Timer/Counter 0, 1, 3, 4, and 5 Prescaler .................................... 307
19.1 Internal Clock Source ....................................................................................... 307
19.2 Prescaler Reset ................................................................................................ 307
19.3 External Clock Source...................................................................................... 307
19.4 Register Description ......................................................................................... 308
20 Output Compare Modulator (OCM1C0A)..................................... 310
20.1 Overview........................................................................................................... 310
20.2 Description........................................................................................................ 310
20.3 Timing Example................................................................................................ 311
21 8-bit Timer/Counter2 with PWM and Asynchronous Operation 312
21.1 Features ........................................................................................................... 312
21.2 Overview........................................................................................................... 312
21.3 Timer/Counter Clock Sources .......................................................................... 313
21.4 Counter Unit ..................................................................................................... 314
21.5 Modes of Operation .......................................................................................... 314
21.6 Output Compare Unit ....................................................................................... 319
21.7 Compare Match Output Unit............................................................................. 320
21.8 Timer/Counter Timing Diagrams ...................................................................... 322
21.9 Asynchronous Operation of Timer/Counter2.................................................... 323
21.10 Timer/Counter Prescaler ................................................................................ 326
21.11 Register Description ....................................................................................... 327
22 SPI- Serial Peripheral Interface.................................................... 334
22.1 Features ........................................................................................................... 334
22.2 Functional Description...................._.._................................................................ 334
22.3 Pin Functionality Slave Select Pin SS .............................................................. 338
22.4 Register Description ......................................................................................... 340
23 USART............................................................................................ 343
23.1 Features ........................................................................................................... 343
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