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STV9425-STV9425B Datasheet

  • STV9425-STV9425B

  • MULTISYNC ON-SCREEN DISPLAY FOR MONITOR

  • 15頁(yè)

  • STMICROELECTRONICS   STMICROELECTRONICS

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STV9425 - STV9425B
STV9426
MULTISYNC ON-SCREEN DISPLAY FOR MONITOR
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CMOS SINGLE CHIP OSD FOR MONITOR
BUILT IN 1 KBYTE RAM HOLDING :
- PAGES鈥?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 HORI-
ZONTAL POSITIONING
FLEXIBLE SCREEN DESCRIPTION
CHARACTER BY CHARACTER COLOR SE-
LECTION (UP TO 8 DIFFERENT COLORS)
PROGRAMMABLE BACKGROUND (COLOR,
TRANSPARENT OR WITH SHADOWING)
50MHz MAXIMUM PIXEL CLOCK
2-WIRES ASYNCHRONOUS SERIAL MCU
INTERFACE (I
2
C PROTOCOL)
8 x 8 BITS PWM DAC OUTPUTS (STV9425)
4 x 8 BITS PWM DAC OUTPUTS (STV9425B)
SINGLE POSITIVE 5V SUPPLY
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.
SHRINK24
(Plastic Package)
ORDER CODES :
STV9425 - STV9425B
DESCRIPTION
TheSTV9425/25B/26is an ON SCREEN DISPLAY
for monitor. It is built as a slave peripheral con-
nected to a host MCU via a serial I
2
C 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. I
2
C interface allows MCU to make
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.
December 1997
DIP16
(Plastic Package)
ORDER CODE :
STV9426
1/15

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