ATMEGA165-16AI Atmel, ATMEGA165-16AI Datasheet - Page 331

• Manufacturer Part Number: ATMEGA165-16AI
• Description: IC AVR MCU 16K 16MHZ 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA165-16AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 16KB (8K 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: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table of Contents
2573G–AVR–07/09
Features................................................................................................ 1
Pin Configurations............................................................................... 2
Overview............................................................................................... 3
About Code Examples......................................................................... 6
AVR CPU Core ..................................................................................... 7
AVR ATmega165 Memories .............................................................. 15
System Clock and Clock Options .................................................... 23
Power Management and Sleep Modes............................................. 32
Disclaimer ............................................................................................................. 2
Block Diagram ...................................................................................................... 3
Pin Descriptions.................................................................................................... 5
Introduction ........................................................................................................... 7
Architectural Overview.......................................................................................... 7
ALU – Arithmetic Logic Unit.................................................................................. 8
Status Register ..................................................................................................... 9
General Purpose Register File ........................................................................... 10
Stack Pointer ...................................................................................................... 11
Instruction Execution Timing............................................................................... 12
Reset and Interrupt Handling.............................................................................. 12
In-System Reprogrammable Flash Program Memory ........................................ 15
SRAM Data Memory........................................................................................... 16
EEPROM Data Memory...................................................................................... 17
I/O Memory ......................................................................................................... 22
Clock Systems and their Distribution .................................................................. 23
Clock Sources..................................................................................................... 24
Default Clock Source .......................................................................................... 24
Crystal Oscillator................................................................................................. 25
Low-frequency Crystal Oscillator ........................................................................ 26
Calibrated Internal RC Oscillator ........................................................................ 27
External Clock..................................................................................................... 28
Clock Output Buffer ............................................................................................ 29
Timer/Counter Oscillator..................................................................................... 29
System Clock Prescaler...................................................................................... 29
Idle Mode ............................................................................................................ 33
ADC Noise Reduction Mode............................................................................... 33
Power-down Mode.............................................................................................. 33
Power-save Mode............................................................................................... 33
Standby Mode..................................................................................................... 34
Power Reduction Register .................................................................................. 34
ATmega165/V
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