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

102414 program memory PROM

648 data memory RAM

Buzzer driving pair and PFD supported

Halt function and wake-up feature reduce power consumption

Up to 0.5s instruction cycle with 8MHz system clock at VDD=5V

Allinstructionsinoneortwomachinecycles

14-bit table read instruction

Two-level subroutine nesting

Bit manipulation instruction

63 powerful instructions

Low voltage reset function

18-pin DIP/SOP package

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.

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