MEGA128CAN Datasheet, PDF (407/413 Pages) ATMEL Corporation – Microcontroller WITH 128K BYTES OF ISP FLASH AND CAN CONTROLLER

AT90CAN128
Table of Contents
4250E–CAN–12/04
Features................................................................................................. 1
Description ............................................................................................ 2
Disclaimer .............................................................................................. 2
Block Diagram ...................................................................................................... 3
Pin Configurations ................................................................................ 4
Pin Descriptions.....................................................................................................6
About Code Examples .......................................................................................... 7
AVR CPU Core ...................................................................................... 8
Introduction ........................................................................................................... 8
Architectural Overview.......................................................................................... 8
ALU – Arithmetic Logic Unit.................................................................................. 9
Status Register ....................................................................................................10
General Purpose Register File ........................................................................... 11
Stack Pointer ...................................................................................................... 12
Instruction Execution Timing............................................................................... 13
Reset and Interrupt Handling.............................................................................. 13
Memories ............................................................................................. 16
In-System Reprogrammable Flash Program Memory ........................................ 16
SRAM Data Memory............................................................................................17
EEPROM Data Memory.......................................................................................19
I/O Memory ..........................................................................................................24
External Memory Interface.................................................................................. 24
General Purpose I/O Registers............................................................................33
System Clock ...................................................................................... 34
Clock Systems and their Distribution .................................................................. 34
Clock Sources..................................................................................................... 35
Default Clock Source .......................................................................................... 35
Crystal Oscillator..................................................................................................36
Low-frequency Crystal Oscillator ........................................................................ 37
Calibrated Internal RC Oscillator ........................................................................ 38
External Clock..................................................................................................... 39
Clock Output Buffer ............................................................................................ 40
Timer/Counter2 Oscillator................................................................................... 40
System Clock Prescaler...................................................................................... 41
Power Management and Sleep Modes.............................................. 43
Idle Mode .............................................................................................................44
ADC Noise Reduction Mode............................................................................... 44
i