SAA5541PS 데이터 시트보기 (PDF) - Philips Electronics

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SAA5541PS

TV microcontrollers with Closed Captioning (CC) and On-Screen Display (OSD)

Philips Electronics 

Philips Semiconductors

TV microcontrollers with Closed Captioning (CC)

and On-Screen Display (OSD)

Preliminary specification

SAA55xx

1 FEATURES

• Single-chip microcontroller with integrated On-Screen

Display (OSD)

• One Time Programmable (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 port 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 Light Emitting Diode (LED)

• Single crystal oscillator for microcontroller, OSD and

data capture

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

• Byte level I2C-bus up to 200 kHz with dual port I/O

(Slave mode up to 400 kHz)

• 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.

2 GENERAL DESCRIPTION

The SAA55xx OSD only family of devices 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 function.

The main differences between the OSD only family and the

SAA55xx Text/CC family of baseline devices are:

• Program ROM size: 16 to 64-kbyte

• Display RAM size: 1.25-kbyte (1 page Text OSD or

CC/OSD)

• Auxiliary RAM size: 0.75-kbyte

• No teletext data capture (Closed Caption only)

• Additional power saving mode (Standby).

2000 Feb 23

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