SAA5X9X Datasheet, PDF (3/68 Pages) NXP Semiconductors – Economy teletext and TV microcontrollers

Philips Semiconductors
Economy teletext and TV microcontrollers
Preliminary specification
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.
1997 Jul 07
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