ATMEGA48V_09 ATMEL [ATMEL Corporation], ATMEGA48V_09 Datasheet - Page 372

• Manufacturer Part Number: ATMEGA48V_09
• Description: 8-bit Microcontroller with 8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

18 SPI – Serial Peripheral Interface ......................................................... 160
19 USART0 ................................................................................................. 170
20 USART in SPI Mode ............................................................................. 198
21 2-wire Serial Interface .......................................................................... 208
iv
17.6Compare Match Output Unit ................................................................................143
17.7Modes of Operation .............................................................................................144
17.8Timer/Counter Timing Diagrams .........................................................................148
17.9Asynchronous Operation of Timer/Counter2 .......................................................150
17.10Timer/Counter Prescaler ...................................................................................151
17.11Register Description ..........................................................................................152
18.1Features ..............................................................................................................160
18.2Overview ..............................................................................................................160
18.3SS Pin Functionality ............................................................................................165
18.4Data Modes .........................................................................................................165
18.5Register Description ............................................................................................167
19.1Features ..............................................................................................................170
19.2Overview ..............................................................................................................170
19.3Clock Generation .................................................................................................171
19.4Frame Formats ....................................................................................................174
19.5USART Initialization .............................................................................................176
19.6Data Transmission – The USART Transmitter ....................................................178
19.7Data Reception – The USART Receiver .............................................................180
19.8Asynchronous Data Reception ............................................................................184
19.9Multi-processor Communication Mode ................................................................187
19.10Register Description ..........................................................................................189
19.11Examples of Baud Rate Setting .........................................................................193
20.1Features ..............................................................................................................198
20.2Overview ..............................................................................................................198
20.3Clock Generation .................................................................................................198
20.4SPI Data Modes and Timing ................................................................................199
20.5Frame Formats ....................................................................................................199
20.6Data Transfer .......................................................................................................202
20.7AVR USART MSPIM vs. AVR SPI ......................................................................204
20.8Register Description ............................................................................................205
21.1Features ..............................................................................................................208
ATmega48/88/168
2545R–AVR–07/09