General Description
The device is an 8-bit high performance RISC-like microcontroller designed for multiple I/O product applications. The device is particularly suitable for use in products such as remote controllers, fan/light controllers, washing machine controllers, scales, toys and various subsystem controllers. A halt feature is included to reduce power consumption.
The program and option memories can be electrically programmed, making the microcontroller suitable for use in product development.

FEATUREs
• Operating voltage:
    fSYS=4MHz: 3.3V~5.5V
    fSYS=8MHz: 4.5V~5.5V
• 13 bidirectional I/O lines
• An interrupt input shared with an I/O line
• 8-bit programmable timer/event counter with overflow interrupt and 8-stage prescaler
• On-chip crystal and RC oscillator
• Watchdog timer
• 512x14 program memory PROM
• 32x8 data memory RAM
• Buzzer driving pair and PFD supported
• Halt function and wake-up feature reduce power consumption
• Up to 0.5μs instruction cycle with 8MHz system clock at VDD=5V
• All instructions in one or two machine cycles
• 14-bit table read instruction
• Two-level subroutine nesting
• Bit manipulation instruction
• 63 powerful instructions
• Low voltage reset function