AT90S4433-8AI .

Description: IC MCU 8BIT 4KB FLASH 32TQFP, DigiKey Programmable: Not Verified, Number of I/O: 20, Part Status: Obsolete, Supplier Device Package: 32-TQFP (7x7), Peripherals: Brown-out Detect/Reset, POR, PWM, WDT, Connectivity: SPI, UART/USART, Voltage - Supply (Vcc/Vdd): 4V ~ 6V, Core Size: 8-Bit, Data Converters: A/D 6x10b, Core Processor: AVR, EEPROM Size: 256 x 8, Program Memory Type: FLASH, Oscillator Type: External, Operating Temperature: -40°C ~ 85°C, RAM Size: 128 x 8, Program Memory Size: 4KB (2K x 16), Speed: 8MHz, Mounting Type: Surface Mount, Package / Case: 32-TQFP, Packaging: Tray.