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GENERAL DESCRIPTION

INTRODUCTION

The ST6365,67,75,77,85,87 microcontrollers are members of the 8-bit HCMOS ST638x family, a series of devices specially oriented to TV applications. Different ROM size and peripheral configurations are available to give the maximum application and cost flexibility. All ST638x members are based on a building block approach: a common core is surrounded by a combination of on-chip peripherals (macrocells) available from a standard library. These peripherals are designed with the same Core technology providing full compatibility and short design time. Many of these macrocells are specially dedicated to TV applications.

■ 4.5 to 6V supply operating range

■ 8MHz Maximum Clock Frequency

■ User Program ROM: up to 20140 bytes

■ Reserved Test ROM: up to 340 bytes

■ Data ROM: user selectable size

■ Data RAM: 256 bytes

■ Data EEPROM: 384 bytes

■ 42-Pin Shrink Dual in Line Plastic Package

■ Up to 22 software programmable general purpose Inputs/Outputs, including 2 direct LED driving Outputs

■ Two Timers each including an 8-bit counter with a 7-bit programmable prescaler

■ Digital Watchdog Function

■ Serial Peripheral Interface (SPI) supporting SBUS/ I 2 C BUS and standard serial protocols

■ SPI for external frequency synthesis tuning

■ 14 bit counter for voltage synthesis tuning

■ Up to Six 6-Bit PWM D/A Converters

■ AFC A/D converter with 0.5V resolution

■ Five interrupt vectors (IRIN/NMI, Timer 1 & 2, VSYNC, PWR INT.)

■ On-chip clock oscillator

■ 5 Lines by 15 Characters On-Screen Display Generator with 128 Characters

■ All ROM types are supported by pin-to-pin EPROM and OTP versions.

■ The development tool of the ST6365, ST6375, ST6385, ST6367, ST6377, ST6387 microcon trollers consists of the ST638X-EMU2 emulation and development system to be connected via a standard RS232 serial line to an MS-DOS Personal Computer.