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