SAA5291AH

Economy teletext and TV microcontrollers; General\n• Single chip microcontroller with integrated teletext\n   decoder\n• Single +5 V power supply\n• Single crystal oscillator for teletext decoder, display and\n   microcontroller\n• Teletext function can be powered-down independently\n   of microcontroller function for reduced power\n   consumption in stand-by\n• Pin compatibility throughout family.Microcontroller\n• 80C51 microcontroller core\n• 16/32/64 kbyte mask programmed ROM\n• 256/768/1280 bytes of microcontroller RAM\n• Eight 6-bit Pulse Width Modulator (PWM) outputs for\n   control of TV analog signals\n• One 14-bit PWM for Voltage Synthesis Tuner control\n• Four 8-bit Analog-to-Digital converters\n• 2 high current open-drain outputs for directly driving\n   LED’s etc.\n• I2C-bus interface\n• External ROM and RAM capability on QFP80 package\n   version.\n;

GENERAL DESCRIPTION\nThe SAA529x, SAA529xA and SAA549x family of microcontrollers are a derivative of the Philips’ industry-standard 80C51 microcontroller and are intended for use as the central control mechanism in a television receiver. They provide control functions for the television system and include an integrated teletext function.\nThe teletext hardware has the capability of decoding and displaying both 525-line and 625-line World System\nTeletext. The same display hardware is used both for Teletext and On-Screen Display, which means that the display features give greater flexibility to differentiate the TV set.\nFEATURES\nGeneral\n• Single chip microcontroller with integrated teletext\n   decoder\n• Single +5 V power supply\n• Single crystal oscillator for teletext decoder, display and\n   microcontroller\n• Teletext function can be powered-down independently\n   of microcontroller function for reduced power\n   consumption in stand-by\n• Pin compatibility throughout family.Microcontroller\n• 80C51 microcontroller core\n• 16/32/64 kbyte mask programmed ROM\n• 256/768/1280 bytes of microcontroller RAM\n• Eight 6-bit Pulse Width Modulator (PWM) outputs for\n   control of TV analog signals\n• One 14-bit PWM for Voltage Synthesis Tuner control\n• Four 8-bit Analog-to-Digital converters\n• 2 high current open-drain outputs for directly driving\n   LED’s etc.\n• I2C-bus interface\n• External ROM and RAM capability on QFP80 package\n   version.\n

恩XP

SAA5291AH

Economy teletext and TV microcontrollers

PHI

SAA5291APS

EconomyteletextandTVmicrocontrollers

PHI

SAA5291H

EconomyteletextandTVmicrocontrollers

PHI

SAA5291PS

EconomyteletextandTVmicrocontrollers

PHI