ATtiny441/ATtiny841 8-bit AVR Microcontroller with 4/8K Bytes In-System Programmable Flash DATASHEET Features High Performance, Low Power Atmel AVR 8-bit Microcontroller Advanced RISC Architecture 120 Powerful Instructions Most Single Clock Cycle Execution 32 x 8 General Purpose Working Registers Fully Static Operation Up to 16 MIPS Throughput at 16 MHz Non-volatile Program and Data Memories 4/8K Bytes of In-System Programmable Flash Program Memory Endurance: 10,000 Write/Erase Cycles 256/512 Bytes of In-System Programmable EEPROM Endurance: 100,000 Write/Erase Cycles 256/512 Bytes Internal SRAM o o Data Retention: 20 Years at 85 C / 100 Years at 25 C Programming Lock for Self-Programming Flash & EEPROM Data Security Peripheral Features One 8-bit and Two 16-bit Timer/Counters with Two PWM Channels, Each Programmable Ultra Low Power Watchdog Timer 10-bit Analog to Digital Converter 12 External and 5 Internal, Single-ended Input Channels 46 Differential ADC Channel Pairs with Programmable Gain (1x / 20x / 100x) Two On-chip Analog Comparators Two Full Duplex USARTs with Start Frame Detection Master/Slave SPI Serial Interface 2 Slave I C Serial Interface Special Microcontroller Features Low Power Idle, ADC Noise Reduction, Standby and Power-down Modes Enhanced Power-on Reset Circuit Programmable Brown-out Detection Circuit with Supply Voltage Sampling External and Internal Interrupt Sources Pin Change Interrupt on 12 Pins Calibrated 8MHz Oscillator with Temperature Calibration Option Calibrated 32kHz Ultra Low Power Oscillator High-Current Drive Capability on 2 I/O Pins I/O and Packages 14-pin SOIC, 20-pad MLF/QFN and 20-pad VQFN 12 Programmable I/O Lines Speed Grade 0 2 MHz 1.7 1.8V 0 4 MHz 1.8 5.5V 0 10 MHz 2.7 5.5V 0 16 MHz 4.5 5.5V Low Power Consumption Active Mode: 0.2 mA at 1.8V and 1MHz Idle Mode: 30 A at 1.8V and 1MHz Power-Down Mode (WDT Enabled): 1.3A at 1.8V Power-Down Mode (WDT Disabled): 150nA at 1.8V 8495HAVR05/20141. Pin Configurations Figure 1-1. Pinout in 14-pin SOIC. VCC 1 14 GND (PCINT8/ADC11/XTAL1/CLKI) PB0 2 13 PA0 (PCINT0/ADC0/AREF/MISO) (PCINT9/ADC10/XTAL2/INT0) PB1 3 12 PA1 (PCINT1/ADC1/AIN00/TOCC0/TXD0/MOSI) (PCINT11/ADC9/RESET/dW) PB3 4 11 PA2 (PCINT2/ADC2/AIN01/TOCC1/RXD0/SS) (PCINT10/ADC8/CLKO/TOCC7/ICP2/RXD0) PB2 5 10 PA3 (PCINT3/ADC3/AIN10/TOCC2/T0/XCK0/SCK) (PCINT7/ADC7/TOCC6/ICP1/TXD0/SS) PA7 6 9 PA4 (PCINT4/ADC4/AIN11/TOCC3/T1/RXD1/SCL/SCK) (PCINT6/ADC6/ACO1/TOCC5/XCK1/SDA/MOSI) PA6 7 8 PA5 (PCINT5/ADC5/ACO0/TOCC4/T2/TXD1/MISO) Figure 1-2. Pinout in 20-pad VQFN/WQFN. (PCINT4/ADC4/AIN11/TOCC3/T1/RXD1/SCL/SCK) PA4 1 15 PA7 (PCINT7/ADC7/TOCC6/ICP1/TXD0/SS) (PCINT3/ADC3/AIN10/TOCC2/T0/XCK0/SCK) PA3 2 14 PB2 (PCINT10/ADC8/CLKO/TOCC7/ICP2/RXD0) (PCINT2/ADC2/AIN01/TOCC1/RXD0/SS) PA2 3 13 PB3 (PCINT11/ADC9/RESET/dW) (PCINT1/ADC1/AIN00/TOCC0/TXD0/MOSI) PA1 4 12 PB1 (PCINT9/ADC10/XTAL2/INT0) (PCINT0/ADC0/AREF/MISO) PA0 5 11 PB0 (PCINT8/ADC11/XTAL1/CLKI) NOTE Bottom pad should be soldered to ground. DNC: Do Not Connect 1.1 Pin Description 1.1.1 VCC Supply voltage. 1.1.2 GND Ground. ATtiny441/841 DATASHEET 2 8495HAVR05/2014 PA5 (PCINT5/ADC5/ACO0/TOCC4/T2/TXD1/MISO) DNC 6 20 DNC 7 19 DNC GND 8 18 DNC DNC VCC 9 17 DNC 10 16 PA6 (PCINT6/ADC6/ACO1/TOCC5/XCK1/SDA/MOSI)