ATMEga64L ATMEL Corporation, ATMEga64L Datasheet - Page 357

• Manufacturer Part Number: ATMEga64L
• Description: 8-bit AVR Microcontroller with 64K Bytes In-System Programmable Flash
• Manufacturer: ATMEL Corporation

Table of Contents
2490G–AVR–03/04
Features................................................................................................ 1
Pin Configuration................................................................................. 2
Overview............................................................................................... 3
About Code Examples......................................................................... 7
AVR CPU Core ..................................................................................... 8
AVR ATmega64 Memories ................................................................ 16
System Clock and Clock Options .................................................... 35
Power Management and Sleep Modes............................................. 44
Disclaimer ............................................................................................................. 2
Block Diagram ...................................................................................................... 3
ATmega103 and ATmega64 Compatibility ........................................................... 4
Pin Descriptions.................................................................................................... 5
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
In-System Reprogrammable Flash Program Memory ........................................ 16
SRAM Data Memory........................................................................................... 17
EEPROM Data Memory...................................................................................... 19
I/O Memory ......................................................................................................... 24
External Memory Interface.................................................................................. 25
XMEM Register Description................................................................................ 30
Clock Systems and their Distribution .................................................................. 35
Clock Sources..................................................................................................... 36
Default Clock Source .......................................................................................... 36
Crystal Oscillator................................................................................................. 37
Low-frequency Crystal Oscillator ........................................................................ 38
External RC Oscillator ........................................................................................ 39
Calibrated Internal RC Oscillator ........................................................................ 40
External Clock..................................................................................................... 41
Timer/Counter Oscillator..................................................................................... 43
Idle Mode ............................................................................................................ 45
ADC Noise Reduction Mode............................................................................... 45
Power-down Mode.............................................................................................. 45
Power-save Mode............................................................................................... 45
ATmega64(L)
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