SAA5262PS Datasheet – 10-Page Intelligent Teletext Decoder
SAA5262PS overview
The SAA5262PS is a 10-Page Intelligent Teletext Decoder made by Philips Electronics - NXP, supplied in a DIP 52 Pin Type package. The absolute maximum ratings table on this page lists the 8 limits from the manufacturer's datasheet that must not be exceeded. This page brings together the SAA5262PS pinout and maximum ratings, with the full datasheet PDF to preview below or download.
The SAA526xPS ICs are single-chip 10-page 625-line World System Teletext (WST) decoders with a high level command interface, SAFARI compatible.
It has been designed so that the overall system cost is kept to a minimum. This has been achieved through the capability of the device to be driven from a single +5 V power supply, low cost 12 MHz crystal oscillator and the high level command interface, which offers the benefit of low software overhead in the TV microcontroller.
The SAA526xPS offers automatic detection of Fastext or TOP transmissions. The device also incorporates a facility to detect the pages in the transmission, which allows only transmitted pages to be selected by page-up and page-down.
SAA5262 and SAA5263 provide Automatic Channel Installation (ACI) information. SAA5263 provides access to Electronic Programmer Guide (EPG) information.
Datasheet
SAA5262PS features
- SAA5261, SAA5262 and SAA5263
- Complete 625-line teletext decoder in a single integrated circuit thereby reducing printed-circuit board area and cost
- Automatic detection of transmitted pages so that only existing pages will be selected by page-up and
- page-down once inventory validated
- Automatic detection of transmitted Fastext links or service information (packet 8/30)
- On-screen display for user interface (menus, etc.) using teletext and dedicated menu icons
- Video Programming System (VPS) decoding
- Wide Screen Signalling (WSS) decoding
- 8-page Fastext decoder
- 6-page TOP decoder in addition to capture of Basic TOP Table (BTT) and 3 Additional Information Table (AIT) pages
- 4-page user defined list mode
- Yugoslavian, Cyrillic, Greek/Turkish, Thai, Arabic/Hebrew, Pan-European and Arabic/English/French language coverage
- High level command interface via I2C-bus giving easy control from a low software overhead
- High level command interface is backward compatible to SAFARI interface
- 625 and 525 line display
- RGB interface to standard colour decoder ICs, push-pull output drive
- Versatile 8-bit open-drain I/O expander
- Single 12 MHz crystal oscillator for reduced cost
- +5 V power supply.
- SAA5262 and SAA5263
- Automatic Channel Installation (ACI)
- Enhanced SAFARI interface providing additional commands
- SAA5263 Electronic Programmed Guide (EPG) feature
- Electronic Programmed Guide (EPG) feature
SAA5262PS pinout
| Pin | Name | Description |
|---|---|---|
| 1 | V0 | versatile open-drain input/output bit 0 (should be tied HIGH) |
| 2 | V1 | versatile open-drain input/output bit 1 (should be tied HIGH) |
| 3 | V2 | versatile open-drain input/output bit 2 (should be tied HIGH) |
| 4 | V3 | versatile open-drain input/output bit 3 (should be tied HIGH) |
| 5 | V4 | versatile open-drain input/output bit 4 (should be tied HIGH) |
| 6 | V5 | versatile open-drain input/output bit 5 (should be tied HIGH) |
| 7 | V6 | versatile open-drain input/output bit 6 (should be tied HIGH) |
| 8 | V7 | versatile open-drain input/output bit 7 (should be tied HIGH) |
| 9 | res | reserved |
| 10 | res | reserved |
| 11 | res | reserved |
| 12 | res | reserved |
| 13 | VSSD1 | digital ground 1 |
| 14 | SCLK1 | serial clock input 1 (NVRAM) |
| 15 | SDAT1 | serial data input/output 1 (NVRAM) |
| 16 | SA | slave address input: LOW selects 58H; HIGH selects 60H |
| 17 | FP | field polarity input: LOW selects first half line; HIGH selects second half line at the start of an even field |
| 18 | HSMODE | horizontal sync mode control input: LOW selects HSYNC on rising edge |
| 19 | VSMODE | vertical sync mode control input. LOW selects VSYNC on rising edge |
| 20 | PDI | power-down imminent input: this input should be pulled LOW to indicate that the system is about to lose power |
| 21 | PL | phase-lock output: HIGH indicates that the system is phase-locked to the CVBS input |
| 22 | VSSA | analog ground |
| 23 | CVBS1 | CVBS input: this signal is applied via a 100 nF capacitor (nominal input 1 V (p-p) |
| 24 | CVBS2 | this pin should be connected to ground if unused |
Show all 32 pins
| Pin | Name | Description |
|---|---|---|
| 25 | BLACK | black level input: a 100 nF capacitor should be connected to VSSA |
| 26 | Iref | reference current input for analog circuits: for correct operation a 27 kW resistor should be connected to VSSA |
| 27 | FRAME | Frame output for use in non-interlaced displays: during teletext off, teletext mixed with TV picture and subtitles this pin is inactive. In full teletext mode this pin provides a 25 Hz square wave. FRAME = 1 = odd, FRAME = 0 = even. |
| 28 | VSSD2 | digital ground 2 |
| 29 | COR | contrast reduction: active LOW output which allows selective contrast reduction of the television picture to enhance a mixed mode display |
| 30 | PON | picture on output: HIGH indicates that a TV picture is present and that the SAA526xPS is in TV mode, mix mode, subtitle mode or news flash mode |
| 31 | RGBREF | RGB reference input: drive level reference for RGB outputs |
| 32 | B | blue dot rate character output of the blue colour information: the high voltage level is defined by the RGBREF pin (can source 4 mA) |
Absolute maximum ratings
| Parameter | Symbol | Value | Unit | Conditions |
|---|---|---|---|---|
| digital supply voltages | VDD | Min. -0.3 / Max. +6.5 | V | |
| analog supply voltage | VDDA | Min. -0.3 / Max. +6.5 | V | |
| input voltage (any input) | VI | Min. -0.3 / Max. VDDD(M) + 0.5 | V | note 1 |
| output voltage (any output) | VO | Min. -0.3 / Max. VDDD(M) + 0.5 | V | note 1 |
| output current (each output) | IO | Max. ±10 | mA | |
| DC input or output diode current | II/OK | Max. ±20 | mA | |
| operating ambient temperature | Tamb | Min. -20 / Max. +70 | °C | |
| storage temperature | Tstg | Min. -55 / Max. +125 | °C |
SAA5262PS applications
- LED Display Drivers
- Digital-to-Analog Converter
- Audio Volume Control
- Microcontroller Interface
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