STV9425-STV9425B Datasheet - STMicroelectronics

DESCRIPTION
TheSTV9425/25B/26is an ONSCREENDISPLAY for monitor. It 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.

■ CMOS SINGLE CHIP OSD FOR MONITOR
■ BUILT IN 1 KBYTE RAM HOLDING :
    - PAGES’ DESCRIPTORS
    - CHARACTER CODES
    - USER DEFINABLE CHARACTERS
■ 128 ALPHANUMERIC CHARACTERS OR GRAPHIC SYMBOLS IN INTERNAL ROM (12 x 18 DOT MATRIX)
■ UP TO 26 USER DEFINABLE CHARACTERS
■ INTERNAL HORIZONTAL PLL (15 TO 120kHz)
■ PROGRAMMABLE VERTICAL HEIGHT OF CHARACTER WITH A SLICE INTERPOLATOR TO MEET MULTI-SYNCH REQUIREMENTS
■ PROGRAMMABLE VERTICAL AND HORIZONTAL POSITIONING
■ FLEXIBLE SCREEN DESCRIPTION
■ CHARACTER BY CHARACTER COLOR SELECTION (UP TO 8 DIFFERENT COLORS)
■ PROGRAMMABLE BACKGROUND (COLOR, TRANSPARENT OR WITH SHADOWING)
■ 50MHz MAXIMUM PIXEL CLOCK
■ 2-WIRES ASYNCHRONOUS SERIAL MCU INTERFACE (I2C PROTOCOL)
■ 8 x 8 BITS PWM DAC OUTPUTS (STV9425)
    4 x 8 BITS PWM DAC OUTPUTS (STV9425B)
■ SINGLE POSITIVE 5V SUPPLY