STV9425 - STV9425B

STV9426

MULTISYNC ON-SCREEN DISPLAY FOR MONITOR

December 1997

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CMOS SINGLE CHIP OSD FOR MONITOR

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BUILT IN 1 KBYTE RAM HOLDING :

- PAGES’ DESCRIPTORS

- CHARACTER CODES

- USER DEFINABLE CHARACTERS

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128 ALPHANUMERIC CHARACTERS OR

GRAPHIC

SYMBOLS

IN INTERNAL ROM

(12 x 18 DOT MATRIX)

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UP TO 26 USER DEFINABLE CHARACTERS

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INTERNAL HORIZONTAL PLL (15 TO 120kHz)

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PROGRAMMABLE VERTICAL HEIGHT OF

CHARACTER WITH A SLICE INTERPOLATOR

TO MEET MULTI-SYNCH REQUIREMENTS

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PROGRAMMABLE VERTICAL AND HORI-

ZONTAL POSITIONING

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FLEXIBLE SCREEN DESCRIPTION

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CHARACTER BY CHARACTER COLOR SE-

LECTION (UP TO 8 DIFFERENT COLORS)

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PROGRAMMABLE BACKGROUND (COLOR,

TRANSPARENT OR WITH SHADOWING)

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50MHz MAXIMUM PIXEL CLOCK

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2-WIRES ASYNCHRONOUS SERIAL MCU

INTERFACE (I

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8 x 8 BITS PWM DAC OUTPUTS (STV9425)

4 x 8 BITS PWM DAC OUTPUTS (STV9425B)

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SINGLE POSITIVE 5V SUPPLY

SHRINK24

(Plastic Package)

ORDER CODES : STV9425 - STV9425B

DESCRIPTION

The STV9425/25B/26is an ON SCREEN DISPLAY

for monitor. It is built as a slave peripheral con-

nected to a host MCU via a serial I

includes a display memory, controls all the display

attributes and generates pixels from the data read

in its on chip memory. The line PLL and a special

slice interpolator allow to have a display aspect

which does not depend on the line and frame

frequencies. I

transparent internal access to prepare the next

pages during the display of the current page. Tog-

gle from one page to another by programming only

one register.

DIP16

(Plastic Package)

ORDER CODE : STV9426

8 x 8 bits or 4 x 8 bits PWM DAC are available to

provide DC voltage control to other peripherals.

The STV9425/25B/26provides the user an easy to

use and cost effective solution to display alphanu-

meric or graphic information on monitor screen.

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