ATMEGA161-8PI Atmel, ATMEGA161-8PI Datasheet - Page 155

• Manufacturer Part Number: ATMEGA161-8PI
• Description: IC AVR MCU 16K 8MHZ IND 40-DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA161-8PI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 35
• 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): 4 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Other names: ATMEGA1618PI

Table of Contents
1228D–AVR–02/07
Features................................................................................................. 1
Disclaimer.............................................................................................. 1
Pin Configuration.................................................................................. 2
Description ............................................................................................ 3
Architectural Overview......................................................................... 7
Timer/Counters ................................................................................... 38
Watchdog Timer.................................................................................. 58
EEPROM Read/Write Access............................................................. 60
Serial Peripheral Interface – SPI........................................................ 63
UARTs.................................................................................................. 69
Analog Comparator ............................................................................ 81
Block Diagram ...................................................................................................... 4
Pin Descriptions.................................................................................................... 5
Crystal Oscillator................................................................................................... 6
The General Purpose Register File .................................................................... 10
ALU – Arithmetic Logic Unit................................................................................ 11
Self-programmable Flash Program Memory....................................................... 11
EEPROM Data Memory...................................................................................... 11
SRAM Data Memory........................................................................................... 12
Program and Data Addressing Modes................................................................ 13
Memory Access Times and Instruction Execution Timing .................................. 17
l/O Memory ......................................................................................................... 19
Reset and Interrupt Handling.............................................................................. 22
MCU Control Register – MCUCR ....................................................................... 34
Sleep Modes....................................................................................................... 36
Timer/Counter Prescalers................................................................................... 38
8-bit Timer/Counters T/C0 and T/C2 .................................................................. 40
Timer/Counter1................................................................................................... 49
Prevent EEPROM Corruption ............................................................................. 62
SS Pin Functionality............................................................................................ 65
Data Modes ........................................................................................................ 65
Data Transmission.............................................................................................. 69
Data Reception ................................................................................................... 71
UART Control ..................................................................................................... 73
Baud Rate Generator.......................................................................................... 76
Double-speed Transmission ............................................................................... 78
ATmega161(L)
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