STM86312 Datasheet, PDF (1/16 Pages) STMicroelectronics – 1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER

STM86312
1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER
s MANY DISPLAY MODES (11 SEGMENTS &
11 DIGITS TO 16 SEGMENTS & 4 DIGITS)
s KEY SCANNING (6 x 4 MATRIX)
s DIMMING CIRCUIT (EIGHT STEPS)
s HIGH-VOLTAGE OUTPUT (V_DD – 35V MAX)
s LED PORTS (4 CHS, 20mA MAX)
s GENERAL PURPOSE INPUT PORT (4 bits)
s NO EXTERNAL RESISTOR NECESSARY
FOR DRIVER OUTPUT (P-CH OPEN DRAIN
+ PULL DOWN RESISTOR OUTPUT)
s SERIAL INTERFACE (CLK, STB, D_IN, D_OUT)
DESCRIPTION
The STM86312 is a VFD (Vacuum Fluorescent
Display) controller/driver that is driven on a 1/4 to
1/11-duty factor. It consists of 11-segments output
lines, 6 grid output lines, 5 segments/grid output
drive lines, a display memory, a control circuit, and
a key scan circuit. Serial data are input to the
STM86312 through a three-line serial interface.
PQFP44
This VFD controller/driver is ideal as a peripheral
device for a single-chip microcomputer.
ORDERING CODES
Type
STM86312
Temperature
Range
-40 to 85 °C
Package
PQFP44
Comments
250 parts per Reel
May 2004
Rev. 1
1/16