ATMEGA8A-AU，integrated circuit Embedded microcontroller Microchip Technology series AVR® ATmega package tray Core processor AVR Core specification 8 bits speed 16MHz Connection ability I²C，SPI，UART/USART peripheral device Undervoltage detection/reset, POR, PWM, WDT I/O number Twenty-three Program storage capacity 8KB（4K x 16） Program memory type flash memory EEPROM capacity 512 x 8 RAM size 1K x 8 Voltage-supply (Vcc/Vdd) 2.7V ~ 5.5V data converter A/D 8x10b Oscillator type inside Working temperature -40°C ~ 85°C（TA） Installation type Surface mount type Package/housing 32-TQFP Supplier device package 32-TQFP（7x7）