ATMEGA2561V ATMEL [ATMEL Corporation], ATMEGA2561V Datasheet - Page 443

• Manufacturer Part Number: ATMEGA2561V
• Description: 8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

2549K–AVR–01/07
Timer/Counter 0, 1, 3, 4, and 5 Prescaler....................................... 172
Output Compare Modulator (OCM1C0A) ....................................... 174
8-bit Timer/Counter2 with PWM and Asynchronous Operation .. 176
SPI – Serial Peripheral Interface..................................................... 199
USART .............................................................................................. 209
USART in SPI Mode ......................................................................... 236
Timer/Counter Clock Sources........................................................................... 143
Counter Unit...................................................................................................... 143
Input Capture Unit............................................................................................. 144
Output Compare Units ...................................................................................... 146
Compare Match Output Unit ............................................................................. 148
Modes of Operation .......................................................................................... 149
Timer/Counter Timing Diagrams....................................................................... 157
Register Description ......................................................................................... 160
Register Description ......................................................................................... 173
Overview........................................................................................................... 174
Description........................................................................................................ 174
Overview........................................................................................................... 176
Timer/Counter Clock Sources........................................................................... 177
Counter Unit...................................................................................................... 177
Modes of Operation .......................................................................................... 179
Output Compare Unit........................................................................................ 184
Compare Match Output Unit ............................................................................. 185
Timer/Counter Timing Diagrams....................................................................... 186
Asynchronous Operation of Timer/Counter2 .................................................... 188
Timer/Counter Prescaler................................................................................... 190
Register Description ......................................................................................... 191
SS Pin Functionality.......................................................................................... 204
Data Modes ...................................................................................................... 204
Register Description ......................................................................................... 206
Overview........................................................................................................... 209
Clock Generation .............................................................................................. 211
Frame Formats ................................................................................................. 214
USART Initialization.......................................................................................... 215
Data Transmission – The USART Transmitter ................................................. 216
Data Reception – The USART Receiver .......................................................... 219
Asynchronous Data Reception ......................................................................... 223
Multi-processor Communication Mode ............................................................. 226
Register Description ......................................................................................... 227
Examples of Baud Rate Setting........................................................................ 232
ATmega640/1280/1281/2560/2561
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