ATtiny25/45/85 Automotive 8-bit AVR Microcontroller with 2/4/8K Bytes In-System Programmable Flash DATASHEET Features High performance, low power AVR 8-bit microcontroller Advanced RISC architecture 120 powerful instructions most single clock cycle execution 32 8 general purpose working registers Fully static operation Non-volatile program and data memories 2/4/8Kbyte of in-system programmable program memory flash (ATtiny25/45/85) Endurance: 10,000 write/erase cycles 128/256/512 bytes in-system programmable EEPROM (Atmel ATtiny25/45/85) Endurance: 100,000 write/erase cycles 128/256/512 bytes internal SRAM (ATtiny25/45/85) Programming lock for self-programming flash program and EEPROM data security Peripheral features 8-bit Timer/Counter with prescaler and Two PWM channels 8-bit high speed Timer/Counter with separate prescaler 2 High frequency PWM outputs with separate output compare registers Programmable dead time generator Universal serial interface with start condition detector 10-bit ADC 4 Single ended channels 2 Differential ADC channel pairs with programmable gain (1x, 20x) Programmable watchdog timer with separate on-chip oscillator On-chip analog comparator Special microcontroller features debugWIRE on-chip debug system In-system programmable via SPI port External and internal interrupt sources Low power idle, ADC noise reduction, and power-down modes Enhanced power-on reset circuit Programmable brown-out detection circuit Internal calibrated oscillator 7598J-AVR-12/14 I/O and packages Six programmable I/O lines 8-pin SOIC 20-pin QFN Operating voltage 2.7 5.5V for Atmel ATtiny25/45/85 Speed grade ATtiny25/45/85: 0 to 8MHz at 2.7 to 5.5V, 0 16MHz at 4.5 to 5.5V Automotive temperature range 40C to +125C Low Power Consumption Active mode: 1MHz, 2.7V: 300A Power-down mode: 0.2A at 2.7V Pin Configurations Figure 1. Pinout ATtiny25/45/85 SOIC (PCINT5/RESET/ADC0/dW) PB5 1 8 VCC (PCINT3/XTAL1/OC1B/ADC3) PB3 2 7 PB2 (SCK/USCK/SCL/ADC1/T0/INT0/PCINT2) (PCINT4/XTAL2/CLKO/OC1B/ADC2) PB4 3 6 PB1 (MISO/DO/AIN1/OC0B/OC1A/PCINT1) GND 4 5 PB0 (MOSI/DI/SDA/AIN0/OC0A/OC1A/AREF/PCINT0) QFN/MLF 20 19 18 17 16 (PCINT5/RESET/ADC0/dW) PB5115 VCC (PCINT3/XTAL1/CLK/OC1B/ADC3) PB3 2 14 PB2 (SCK/USCK/SCL/ADC1/T0/INT0/PCINT2) DNC 3 13 DNC DNC 4 12 PB1 (MISO/DO/AIN1/OC0B/OC1A/PCINT1) (PCINT4/XTAL2/CLKO/OC1B/ADC2) PB4 5 11 PB0 (MOSI/DI/SDA/AIN0/OC0A/OC1A/AREF/PCINT0) 6789 10 NOTE: Bottom pad should be soldered to ground DNC: Do Not Connect 2 ATtiny25/45/85 Automotive DATASHEET 7598JAVR12/14 DNC DNC DNC DNC GND DNC DNC DNC DNC DNC