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SAA5497PS PDF预览

SAA5497PS

更新时间: 2024-10-27 22:38:51
品牌 Logo 应用领域
恩智浦 - NXP 微控制器电视
页数 文件大小 规格书
68页 614K
描述
Economy teletext and TV microcontrollers

SAA5497PS 数据手册

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Philips Semiconductors  
Preliminary specification  
Economy teletext and TV microcontrollers  
SAA5x9x family  
1
FEATURES  
General  
1.4  
Teletext Display  
525-line and 625-line display  
12 × 10 character matrix  
1.1  
Single chip microcontroller with integrated teletext  
decoder  
Double height, width and size On-Screen Display (OSD)  
Definable border colour  
Single +5 V power supply  
Single crystal oscillator for teletext decoder, display and  
Enhanced display features including meshing and  
microcontroller  
shadowing  
Teletext function can be powered-down independently  
of microcontroller function for reduced power  
consumption in stand-by  
260 characters in mask programmed ROM  
Automatic FRAME output control with manual override  
RGB push pull output to standard decoder ICs  
Pin compatibility throughout family.  
Stable display via slave synchronisation to Horizontal  
Sync and Vertical Sync.  
1.2  
Microcontroller  
80C51 microcontroller core  
1.5  
Additional features of SAA529xA devices  
16/32/64 kbyte mask programmed ROM  
256/768/1280 bytes of microcontroller RAM  
Wide Screen Signalling (WSS) bit decoding (line 23).  
1.6  
Additional features of SAA549x devices  
Eight 6-bit Pulse Width Modulator (PWM) outputs for  
control of TV analog signals  
Wide Screen Signalling bit decoding (line 23)  
Quad width OSD capability  
One 14-bit PWM for Voltage Synthesis Tuner control  
Four 8-bit Analog-to-Digital converters  
32 additional OSD characters in mask programmed  
2 high current open-drain outputs for directly driving  
ROM  
LED’s etc.  
I2C-bus interface  
8 foreground and 8 background colours definable from a  
palette of 64.  
External ROM and RAM capability on QFP80 package  
version.  
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.  
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)  
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.  
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)  
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.  
Automatic detection of FASTEXT transmission  
Real-time packet 26 engine for processing accented  
(and other) characters  
Comprehensive Teletext language coverage  
Video signal quality detector.  
1997 Jul 07  
3

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