GENERAL DESCRIPTION

The SAA55xx 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, On-Screen Display (OSD) and some versions include an integrated data capture and display function.

FEATURES

? Single-chip microcontroller with integrated OSD

? Versions available with integrated data capture

? OTP memory for both program ROM and character sets

? Single power supply: 3.0 to 3.6 V

? 5 V tolerant digital inputs and I/O

? 29 I/O ports via individual addressable controls

? Programmable I/O for push-pull, open-drain and

quasi-bidirectional

? Two port lines with 8 mA sink (at <0.4 V) capability, for

direct drive of LED

? Single crystal oscillator for microcontroller, OSD and

data capture

? Power reduction modes: Idle, Power-down and Standby

? Byte level I2C-bus interface with dual port I/O

? 32 Dynamically Redefinable Characters for OSDs

? Special graphic characters allowing four colours per

character

? Selectable character height 9, 10, 13 and 16 TV lines

? Pin compatibility throughout family

? Operating temperature: ?20 to +70 °C.