•    On-chip 80515 core with 64K bytes Flash, 256 bytes Direct RAM and 2K bytes on-chip auxiliary RAM
•    Fast CPU rate (24Mhz). 41.6 ns for shortest instruction
•    Programmable CPU clocks from 24 Mhz to 500 Khz
•    Programmable crystal start-up cycles from 0 to 4096 cycles
•    Supports Idle mode and Stop mode for power saving.
•    Supports crystal/CPU wake-up from Stop mode
•    Supports In Circuit Flash programming (ICP)
•    Supports 2 external interrupts
•    Supports keyboard interrupt on 4 GPIO pins.
•    On-chip 4 Timers supporting Timer, Pulse Output, Event Counter and Pulse Width Measurement modes
•    On-chip 15-bit programmable Watchdog Timer
•    On-chip Serial Port which supports Synchronous mode and 8/9-bit UART modes
•    On-chip Serial Peripheral Interface (SPI)
•    On-chip 2 channels of 8-bit PWM with programmable repetition rate
•    On-chip 2 channels of 10-bit ADC
•    On-chip IIC Master and Slave ports with configurable pin outs
•    On-chip USB 1.1 which supports end-pint 0, 1 and 2
•    On-chip Consumer Infra-Red Remote Receiver (CIR) which supports NEC and Phillips RC-5
protocols
•    Support 5 dedicated General Purpose I/O Ports (total 27 I/O pins). Among them, 3 ports are
open-drain programmable and one port has 20 mA sink capability. All I/O ports are 5V tolerant.
•    External Interrupt, Timer, Serial Port, IIC, SPI, PWM, CIR and ADC pins can be additional GPIO if the associated function is not enabled