Specifications:

Core Processor: AVR
Core Size: 8-Bit
Speed: 20MHz
Connectivity: USI (Universal Serial Interface)
Peripherals: Brown-out Detect/Reset, POR (Power-On Reset), PWM (Pulse Width Modulation), Temperature Sensor, WDT (Watchdog Timer)
Number of I/O: 12
Program Memory Size: 8KB (4K x 16)
Program Memory Type: FLASH
EEPROM Size: 512 x 8
RAM Size: 512 x 8
Voltage - Supply (Vcc/Vdd): 1.8V ~ 5.5V
Data Converters: A/D (Analog-to-Digital) 8x10b (8 channels, 10-bit resolution)
Oscillator Type: Internal
Operating Temperature: -40°C ~ 85°C (TA)
Mounting Type: Through Hole
Package / Case: 14-DIP (0.300", 7.62mm)
Supplier Device Package: 14-PDIP
Base Product Number: ATTINY84