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SAA5296PS Datasheet(PDF) 3 Page - NXP Semiconductors |
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SAA5296PS Datasheet(HTML) 3 Page - NXP Semiconductors |
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3 / 68 page  1997 Jul 07 3 Philips Semiconductors Preliminary specification Economy teletext and TV microcontrollers SAA5x9x family 1 FEATURES 1.1 General • Single chip microcontroller with integrated teletext decoder • Single +5 V power supply • Single crystal oscillator for teletext decoder, display and microcontroller • Teletext function can be powered-down independently of microcontroller function for reduced power consumption in stand-by • Pin compatibility throughout family. 1.2 Microcontroller • 80C51 microcontroller core • 16/32/64 kbyte mask programmed ROM • 256/768/1280 bytes of microcontroller RAM • Eight 6-bit Pulse Width Modulator (PWM) outputs for control of TV analog signals • One 14-bit PWM for Voltage Synthesis Tuner control • Four 8-bit Analog-to-Digital converters • 2 high current open-drain outputs for directly driving LED’s etc. • I2C-bus interface • External ROM and RAM capability on QFP80 package version. 1.3 Teletext acquisition • 1 page and 10 page Teletext version • Acquisition of 525-line and 625-line World System Teletext, with automatic selection • Acquisition and decoding of VPS data (PDC system A) • Page clearing in under 64 µs (1 TV line) • Separate storage of extension packets (SAA5296/7, SAA5296/7A and SAA5496/7) • Inventory of transmitted Teletext pages stored in the Transmitted Page Table (TPT) and Subtitle Page Table (SPT) (SAA5296/7, SAA5296/7A and SAA5496/7) • Automatic detection of FASTEXT transmission • Real-time packet 26 engine for processing accented (and other) characters • Comprehensive Teletext language coverage • Video signal quality detector. 1.4 Teletext Display • 525-line and 625-line display • 12 × 10 character matrix • Double height, width and size On-Screen Display (OSD) • Definable border colour • Enhanced display features including meshing and shadowing • 260 characters in mask programmed ROM • Automatic FRAME output control with manual override • RGB push pull output to standard decoder ICs • Stable display via slave synchronisation to Horizontal Sync and Vertical Sync. 1.5 Additional features of SAA529xA devices • Wide Screen Signalling (WSS) bit decoding (line 23). 1.6 Additional features of SAA549x devices • Wide Screen Signalling bit decoding (line 23) • Quad width OSD capability • 32 additional OSD characters in mask programmed ROM • 8 foreground and 8 background colours definable from a palette of 64. 2 GENERAL DESCRIPTION The 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. The teletext hardware has the capability of decoding and displaying both 525-line and 625-line World System Teletext. 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. The family offers both 1 page and 10 page Teletext capability, in a range of ROM sizes. Increasing display capability is offered from the SAA5290 to the SAA5497. |
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