ATmega48PA Automotive Atmel Corporation, ATmega48PA Automotive Datasheet - Page 219
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ATmega48PA Automotive
Manufacturer Part Number
ATmega48PA Automotive
Description
Manufacturer
Atmel Corporation
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30. Table of Contents
7701E–AVR–02/11
1
2
3
4
5
6
7
Features .................................................................................................. 1
Pin Configurations ................................................................................ 2
Overview ................................................................................................ 3
Resources .............................................................................................. 6
About Code Examples .......................................................................... 6
CPU Core ................................................................................................ 7
Memories .............................................................................................. 15
System Clock and Clock Options ...................................................... 25
1.1
2.1
2.2
2.3
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
6.1
6.2
6.3
6.4
6.5
7.1
7.2
7.3
7.4
7.5
7.6
7.7
Crystal Oscillator ..........................................................................................27
Disclaimer ......................................................................................................2
Block Diagram ................................................................................................3
Automotive Quality Grade ..............................................................................4
Pin Descriptions .............................................................................................5
Overview ........................................................................................................7
Architectural Overview ...................................................................................7
ALU – Arithmetic Logic Unit ...........................................................................8
Status Register ...............................................................................................8
General Purpose Register File .....................................................................10
Stack Pointer ................................................................................................11
Instruction Execution Timing ........................................................................12
Reset and Interrupt Handling .......................................................................12
In-System Re-programmable Flash Program Memory .................................15
SRAM Data Memory ....................................................................................15
EEPROM Data Memory ...............................................................................17
I/O Memory ..................................................................................................21
Register Description .....................................................................................22
Clock Systems and their Distribution ............................................................25
Clock Sources ..............................................................................................26
Default Clock Source ...................................................................................26
Low-frequency Crystal Oscillator ..................................................................28
Calibrated Internal RC Oscillator ..................................................................29
External Clock ..............................................................................................29
Atmel ATtiny24/44/84 [Preliminary]
219
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