Description

The SM8958A series product is an 8 - bit single chip micro controller with 32KB on-chip flash and 1K byte RAM embedded. It is a derivative of the 8052 micro controller family. It has 5-channel SPWM build-in. User can access on-chip expanded RAM with easier and faster way by its ‘bank mapping direct addressing mode’ scheme. With its hardware features and powerful instruction set, it’s straight forward to make it a versatile and cost effective controller for those applications which demand up to 32 I/ O pins for PDIP package or up to 36 I/O pins for PLCC/QFP package, or applications which need up to 32K byte flash memory for program data.

Features

Working voltage: 3.0V ~ 3.6V For L Version

4.5V ~ 5.5V For C Version

General 8052 family compatible

12 clocks per machine cycle

32K byte on chip program flash

1024 byte on-chip data RAM

Three 16 bit Timers/Counters

One Watch Dog Timer

Four 8-bit I/O ports for PDIP package

Four 8-bit I/O ports + one 4-bit I/O ports for PLCC or QFP package

Full duplex serial channel

Bit operation instruction

Page free jumps

8-bit Unsigned Division

8-bit Unsigned Multiply

BCD arithmetic

Direct Addressing

Indirect Addressing

Nested Interrupt

Two priority level interrupt

A serial I/O port

Power save modes: Idle mode and Power down mode

Code protection function

Low EMI (inhibit ALE)

Bank mapping direct addressing mode for access on-chip RAM

5 channel SPWM function with P1.3 ~ P1.7