ATmega169P datasheet(389/393 Pages) ATMEL

389 / 393 page

8018M–AVR–07/09

ATmega169P

17.9Timer/Counter Prescaler .....................................................................................152

17.108-bit Timer/Counter Register Description ..........................................................153

SPI – Serial Peripheral Interface ......................................................... 158

18.1Features ..............................................................................................................158

18.2Overview ..............................................................................................................158

18.3SS Pin Functionality ............................................................................................163

18.4Data Modes .........................................................................................................164

18.5Register Description ............................................................................................165

USART ................................................................................................... 168

19.1Features ..............................................................................................................168

19.2Overview ..............................................................................................................168

19.3Clock Generation .................................................................................................170

19.4Frame Formats ....................................................................................................173

19.5USART Initialization .............................................................................................175

19.6Data Transmission – The USART Transmitter ....................................................177

19.7Data Reception – The USART Receiver .............................................................180

19.8Asynchronous Data Reception ............................................................................185

19.9Multi-processor Communication Mode ................................................................188

19.10USART Register Description .............................................................................190

19.11Examples of Baud Rate Setting .........................................................................195

USI – Universal Serial Interface .......................................................... 199

20.1Overview ..............................................................................................................199

20.2Functional Descriptions .......................................................................................200

20.3Alternative USI Usage .........................................................................................206

20.4USI Register Descriptions ...................................................................................207

AC - Analog Comparator ..................................................................... 211

21.1Analog Comparator Multiplexed Input .................................................................212

21.2Analog Comparator Register Description ............................................................213

ADC - Analog to Digital Converter ...................................................... 215

22.1Features ..............................................................................................................215

22.2Overview ..............................................................................................................215

22.3Operation .............................................................................................................216

22.4Starting a Conversion ..........................................................................................217

22.5Prescaling and Conversion Timing ......................................................................218

ATmega169P датащи(PDF) 389 Page - ATMEL Corporation