SM8958A

SyncMOS Technologies Inc. September 2002 SM8958A 8 - Bit Micro-controller with 32KB flash & 1KB RAM embedded Product List SM8958AL25, 25MHz 32KB internal flash MCU SM8958AC25, 25MHz 32KB internal flash MCU SM8958AC40, 40MHz 32KB internal flash MCU 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 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 f...