ATtiny84 8-Bit AVR Microcontroller (DIP-14)
20MHz, 8kB Flash, 512B SRAM, 512B EEPROM, debugWIRE, DIP-14
Aliase:ATtiny84, Tiny84
DIP-14 Top View
14 Pins
Pinout Table14
| Pin | Signal / Name | Type | Alternative Functions |
|---|---|---|---|
| 1 | VCC | Power | Positive Power Supply (1.8V – 5.5V) |
| 2 | XTAL1/PB0 | Digital | XTAL1 — Crystal Oscillator InputPCINT8 — Pin Change Interrupt 8 |
| 3 | XTAL2/PB1 | Digital | XTAL2 — Crystal Oscillator OutputOC0A — Timer/Counter0 Compare Match A Output (PWM)PCINT9 — Pin Change Interrupt 9 |
| 4 | RESET/PB3 | Digital | Reset Input (Active Low; pull HIGH with 10kΩ for normal operation)dW — debugWIRE Interface (single-wire debug)PCINT11 — Pin Change Interrupt 11 |
| 5 | PB2 | Digital | INT0 — External Interrupt 0OC0A — Timer/Counter0 Compare Match A Output (PWM, alternate mapping)PCINT10 — Pin Change Interrupt 10 |
| 6 | PA7 | Digital | MOSI — USI Data Output / SPI MOSISDA — USI Two-Wire Data (I2C SDA when using USI in TWI mode)OC0B — Timer/Counter0 Compare Match B Output (PWM)ADC7 — ADC Channel 7 InputPCINT7 — Pin Change Interrupt 7 |
| 7 | PA6 | Digital | MISO — USI Data Input / SPI MISOOC1A — Timer/Counter1 Compare Match A Output (PWM)ADC6 — ADC Channel 6 InputPCINT6 — Pin Change Interrupt 6 |
| 8 | PA5 | Digital | SCK — USI Clock / SPI ClockOC1B — Timer/Counter1 Compare Match B Output (PWM)ADC5 — ADC Channel 5 InputPCINT5 — Pin Change Interrupt 5 |
| 9 | PA4 | Digital | USCK — USI Clock Input (SPI SCK in slave mode)SCL — USI Two-Wire Clock (I2C SCL when using USI in TWI mode)T1 — Timer/Counter1 External Clock InputADC4 — ADC Channel 4 InputPCINT4 — Pin Change Interrupt 4 |
| 10 | PA3 | Digital | T0 — Timer/Counter0 External Clock InputADC3 — ADC Channel 3 InputPCINT3 — Pin Change Interrupt 3 |
| 11 | PA2 | Digital | AIN1 — Analog Comparator Negative InputADC2 — ADC Channel 2 InputPCINT2 — Pin Change Interrupt 2 |
| 12 | PA1 | Digital | AIN0 — Analog Comparator Positive InputADC1 — ADC Channel 1 InputPCINT1 — Pin Change Interrupt 1 |
| 13 | AREF/PA0 | Analog | AREF — External Analog Reference Input (when selected via ADMUX)ADC0 — ADC Channel 0 InputPCINT0 — Pin Change Interrupt 0 |
| 14 | GND | Ground | System Ground (0V) |