GENERAL DESCRIPTION

The SAA5288 is a microcontroller for use in televisions with an OSD generator compatible with the Economy Teletext/TV microcontroller family (SAA5290, SAA5291, SAA5296 etc.). TV control facilities are provided by an on-chip industry standard 80C51 microcontroller and a 1 kbyte DRAM is included for OSD memory.

Hardware and software compatibility with the Economy Teletext/TV microcontroller family minimizes the changes required to develop a TV control function for areas where eletext is not broadcast.

FEATURES

General

? On-chip TV control tuning

? Hardware and software compatible with SAA5290, SAA5291 and SAA5296

? Single +5 V power supply

? RGB interface to standard decoder ICs, push-pull output drive

? SDIP52 package

? Single crystal oscillator for display and microcontroller.

Microcontroller

? 80C51 microcontroller core

? 16 kbyte mask programmed ROM

? 256 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 (ADCs)

? 2 high current open-drain outputs for directly driving LED’s etc.

? Switchable bit or byte-oriented I2C-bus interface.

Display

? Single page (1024 × 8) on-board On Screen Display (OSD) memory

? Double size width and height capability for OSD

? Enhanced display features including meshing, shadowing and additional display attributes

? 260 characters in mask programmed ROM

? Display clock derived internally to reduce peripheral components to a minimum

? Automatic FRAME output control with manual override

? Standby mode for display hardware

? 525-line and 625-line display

? 12 × 10 character matrix

? Stable Display via slave synchronization to Horizontal Sync and Vertical Sync.