SAA5290A Philips Semiconductors, SAA5290A Datasheet - Page 3

• Manufacturer Part Number: SAA5290A
• Description: Economy teletext and TV microcontrollers
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1
1.1
1.2
1.3
1997 Jul 07
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.
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.
I
External ROM and RAM capability on QFP80 package
version.
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 s (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.
Economy teletext and TV microcontrollers
2
C-bus interface
FEATURES
General
Microcontroller
Teletext acquisition
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1.4
1.5
1.6
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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.
525-line and 625-line display
12
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.
Wide Screen Signalling (WSS) bit decoding (line 23).
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.
GENERAL DESCRIPTION
Teletext Display
Additional features of SAA529xA devices
Additional features of SAA549x devices
10 character matrix
SAA5x9x family
Preliminary specification