INTRODUCTION

ST6373 Microcontrollers are members of the 8-bit HCMOS ST637x family, a series of devices specially intended for Digitally Controlled Multi Frequency Monitor applications. All ST637x devices are based on a building block approach: a common core is surrounded by a combination of onchip peripherals (macrocells) available from a standard library.

■ 4.5V to 6V Operating Supply Voltage Range

■ Low Current Consumption

■ 0 to +70°C Operating Temperature Range

■ 8 MHz clock Oscillator

■ 16K bytes ROM/OTP/EPROM (8K and 12K ROM versions also available)

■ 192 bytes RAM

■ 384 bytes general purpose EEPROM

■ 128 bytes dedicated EEPROM for DDC SPI

■ 22 fully programmable I/O pins, offering direct LED drive capability, as well as interrupt generation for keyboard inputs

■ Digital WATCHDOG timer

■ Three Timers, each comprising an 8-bit counter and a 7- bit Prescaler

■ SYNC Processor:

– 12-bits HSYNC Event Counter

– 12-bits VSYNC Period Counter

– HSYNC and VSYNC Polarity Detection

– HSYNC and VSYNC Outputs

– HFLYBACK and VFLYBACK Inputs

– CLAMP and BLANK Outputs

■ 14-bit (PWM + BRM) D/A Converter

■ Nine 7-bit PWM D/A Converter Outputs

■ 8-bit A/D Converter with 8 multiplexed inputs

■ DDC SPI with interrupt and 4 operating modes

■ A further SPI with interrupt and 2 operating modes

■ Remote Control Signal Input (Non Maskable Interrupt)

■ VSYNC Interrupt Input

■ Five Interrupt Vectors

■ XOR Register (Instruction Set expansion)

■ MIRROR Register (Instruction Set expansion)