描述 Description

The SM8954A series product is an 8 - bit single chip micro controller with 16KB 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. 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 16 I/O pins for PDIP package or up to 36 I/O pins for PLCC/QFP package, or applications which need up to 16K byte flash memory for program data. To program the on-chip flash memory, a commercial writer is available to do it in parallel programming method.

特性 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

● 16K 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

● Industrial Level

● 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)

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