ATMEGA88P-20MUR Atmel, ATMEGA88P-20MUR Datasheet - Page 413

• Manufacturer Part Number: ATMEGA88P-20MUR
• Description: MCU AVR 8KB FLASH 20MHZ 32QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA88P-20MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table of Contents
8025L–AVR–7/10
1
2
3
4
5
6
7
8
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 4
Resources ................................................................................................. 8
Data Retention .......................................................................................... 8
About Code Examples ............................................................................. 8
AVR CPU Core .......................................................................................... 9
AVR Memories ........................................................................................ 17
System Clock and Clock Options ......................................................... 27
1.1Pin Descriptions ........................................................................................................3
2.1Block Diagram ...........................................................................................................5
2.2Comparison Between ATmega48P, ATmega88P and ATmega168P .......................6
6.1Overview ...................................................................................................................9
6.2ALU – Arithmetic Logic Unit ....................................................................................10
6.3Status Register ........................................................................................................10
6.4General Purpose Register File ................................................................................12
6.5Stack Pointer ...........................................................................................................13
6.6Instruction Execution Timing ...................................................................................14
6.7Reset and Interrupt Handling ..................................................................................15
7.1Overview .................................................................................................................17
7.2In-System Reprogrammable Flash Program Memory .............................................17
7.3SRAM Data Memory ...............................................................................................19
7.4EEPROM Data Memory ..........................................................................................20
7.5I/O Memory ..............................................................................................................21
7.6Register Description ................................................................................................22
8.1Clock Systems and their Distribution .......................................................................27
8.2Clock Sources .........................................................................................................28
8.3Low Power Crystal Oscillator ...................................................................................29
8.4Full Swing Crystal Oscillator ....................................................................................31
8.5Low Frequency Crystal Oscillator ............................................................................33
8.6Calibrated Internal RC Oscillator .............................................................................34
8.7128 kHz Internal Oscillator ......................................................................................35
ATmega48P/88P/168P
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