STV9425

` CMOS SINGLE CHIP OSD FORMONITOR
` BUILT IN 1 KBYTERAM HOLDING :
- PAGES'DESCRIPTORS
- CHARACTER CODES
- USER DEFINABLE CHARACTERS
` 128 ALPHANUMERIC CHARACTERS OR GRAPHIC SYMBOLS IN INTERNAL ROM (12 x 18 DOTMATRIX)
` UP TO 26 USERDEFINABLE CHARACTERS
` INTERNALHORIZONTAL PLL (15 TO 120kHz)
` PROGRAMMABLE VERTICAL HEIGHT OF CHARACTER WITH A SLICE INTERPOLATOR TOMEET MULTI-SYNCH REQUIREMENTS
` PROGRAMMABLE VERTICAL AND HORI ZONTAL POSITIONING
` FLEXIBLE SCREEN DESCRIPTION
` CHARAPROGRAMMABLE BACKGROUND (COLOR,TRANSPARENT OR WITH SHADOWING)CTER BY CHARACTER COLOR SELECTION (UP TO 8 DIFFERENTCOLORS)
` 50MHz MAXIMUMPIXEL CLOCK
` 2-WIRES ASYNCHRONOUS SERIAL MCU INTERFACE (I<sup>2</sup>C PROTOCOL)
` 8 x 8 BITSPWM DAC OUTPUTS (STV9425) 4 x 8 BITS PWM DAC OUTPUTS (STV9425B)
` SINGLE POSITIVE 5V SUPPLY

TheSTV9425/25B/26is anONSCREENDISPLAY for monitor. STV9425 is built as a slave peripheral connected to a host MCU via a serial I²C bus. It 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. I²C interface allows MCU to make transparent internal access to prepare the next pages during the display of the current page. Toggle from one page to another by programming only one register.

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 alphanumericor graphic information on monitor screen.