Philips SAA5250 Data Sheet
Summary
This specialized CMOS Interface Circuit is designed to manage data acquisition and control for complex multi-standard teletext display systems. The device effortlessly supports major broadcast protocols, including DIDON, NABTS, and U.K. CEEFAX, while handling up to a 2KB buffer memory. This comprehensive technical manual serves as a vital resource for electronics engineers and developers building embedded display equipment. It thoroughly covers the IC's function, compatibility with standard microcontrollers, pin layouts, signal processing, and complex data synchronization needed for reliable broadcast signal decoding.
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INTEGRATED CIRCUITS
DATA SHEET
SAA5250 Interface for data acquisition and control (for multi-standard teletext systems)
Product specification January
File under Integrated Circuits, IC02
Page Summary Contents For Philips SAA5250 Data Sheet
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INTEGRATED CIRCUITS DATA SHEET SAA5250 Interface for data acquisition and control (for multi-standard teletext systems) Product specification January File under Integrated Circuits, IC02
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) GENERAL DESCRIPTION The SAA5250 is a CMOS Interface for Data Acqui...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) IO IO IS IS LL LL IS IA L/ LL IN FA LO IO IF LL LI IO IG IN IN FA ...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) handbook, halfpage A10 VDD VAL OUT A9 VAL IN/ SYNC CBB A7 DCK A6 S...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) PINNING FUNCTION MNEMONIC PIN NO. FUNCTION A10 and 1 and Memory ad...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) FUNCTIONAL DESCRIPTION Microcontroller interface The microcontroll...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) Register organization R0 register Table 3 R0 Register contents R04...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) If R04 1; the device operates in the fast mode. Prior to writing i...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) Table 5 Format table FORMAT BYTE B8, B6, B4 AND B2 LIST 1 LIST 2 L...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) R3 register Table 7 R3 register contents R35 TO R30 6-BIT FORMAT M...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) Fifo status register (read R0 register) Table 11 Fifo register con...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) Operation The CIDAC uses the same clock signal for data acquisitio...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) Table 13 Hamming correction (coding) HEXADECIMAL NOTATION Note 1. ...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) Table 14 Hamming correction (decoding) INTERPRETATION INFORMATION ...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) Clock generation The clock generator does the following: acts as a...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) Table 15 Continuity index processing result D7 D6 D5 D4 D3 D2 D1 D...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) Table 20 Magazine and row address group processing results D7 D6 D...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) Fig.4 DIDON (long) acquisition flow chart. January
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) handbook, full pagewidth INITIALIZE CIDAC FRAMING CODE DETECT LOAD...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) handbook, full pagewidth INITIALIZE CIDAC FRAMING CODE DETECT LOAD...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) handbook, full pagewidth INITIALIZE CIDAC FRAMING CODE DETECT SAVE...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) handbook, full pagewidth INITIALIZE CIDAC FRAMING CODE DETECT MAG ...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) handbook, halfpage INITIALIZE CIDAC FRAMING CODE DETECT LOAD FORMA...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) RATINGS Limiting values in accordance with the Absolute Maximum Sy...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) SD and DCK D.C. CHARACTERISTICS (see Fig.10) VDD = 5 V; VSS = 0 V;...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) A.C. CHARACTERISTICS VDD = 5 10%; Reference levels for all inputs ...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) PARAMETER CONDITIONS SYMBOL MIN. TYP. MAX. UNIT Demodulator interf...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) READ CYCLE handbook, full pagewidth t LHLL t AHRD t ALRD t AHL t A...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) ha nd bo ok , f ul l p ag ew id th (p in (p in LE /W (p in rit cy ...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) ch ar ac te pe rio to IT IT to TA TA IN TA handbook, full pagewidt...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) t DCKL handbook, full pagewidth t DCKH t SSD t HSD VAL IN/ SYNC t ...
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Philips Semiconductors Product specification se at in pl an Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) PACKAGE OUTLINES DIP40: plastic dual in-line packag...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) VSO40: plastic very small outline package; 40 leads SOT158-1 pin 1...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) SOLDERING Several techniques exist for reflowing; for example, the...
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Philips Semiconductors Product specification Interface for data acquisition and control SAA5250 (for multi-standard teletext systems) DEFINITIONS Data sheet status Objective specification This data sh...
Manual Details
| Brand | Philips |
|---|---|
| Pages | 35 |
| File Size | 173.56 KB |
| Published | July 04, 2026 |
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Frequently Asked Questions
Which teletext standards does the SAA5250 support?
It supports French DIDON, North American NABTS, and U.K. CEEFAX specifications.
What is the maximum data conversion rate of this device?
The system has a 7.5 MHz maximum conversion rate.
Is the CIDAC compatible with various microcontrollers?
Yes, it is ‘MOTEL’ compatible and can recognize Motorola or Intel microcontrollers.
What safety precautions are needed during installation?
Operation above limiting values may cause permanent damage, and reflow soldering techniques are recommended.