pic18f4523 microcontroller family Ư¡¿ä¾à • 10 mips performance • 32 or 16 kbytes of enhanced flash program memory • 256 bytes of eeprom data memory • up to 1,536 bytes of ram • 2 analog comparators with input multiplexing • up to two capture/compare/pwm modules • master i2c¢â and spi communication module • enhanced usart module with rs-485, rs-232 and lin support • one 8-bit and 3x 16-bit timers • internal oscillator (32 mhz to 31 khz)