STFPC311 Datasheet, PDF (1/39 Pages) STMicroelectronics – Front panel controller/driver with standby power management

STFPC311
Front panel controller/driver
with standby power management
Features
■ IC front panel controller/driver
■ Timing power standby management controller
■ IC power supply from 3.3V (V_DD) to –30V (V_SS)
■ Integrated VFD driver and controller
■ Infrared (IR) Remote Control (RC) Decoder
(Philips or NEC format)
■ Drives many display modes (12 segments/16
digits to 20 segments/8 digits)
■ High voltage outputs (V_DD - 33.3V max)
■ No external resistors necessary for driver
outputs (P-channel open- drain with pull-down
resistor outputs)
■ Key scanning (up to 12mm x 2mm matrix)
■ Led ports (4 channels, 20mA, max)
■ Serial interface (STB, CLK, D_IN, and D_OUT)
communication protocol
■ Dimming circuit (adjustable up to 8 steps)
■ Supports auto-increment of display digit, which
lightens the load on the MCU
■ Programmable 8 hot keys for the IR remote
control command
■ Programmable 8 hot keys for key scan
command
■ Low power consumption in standby mode
■ 2 general purpose input ports (SW1, SW2)
■ Available in PQFP-52 package
Order Codes
PQFP-52
Description
The STFPC311 is a complete, low-cost,
integrated solution for controlling and driving a
front panel Vacuum Fluorescent Display (VFD). It
is ideal for decreasing power consumption in
standby mode by reducing the application standby
current to a minimum. It also contains a built-in
remote control decoder module.
While in the standby mode of operation, a valid
key press or signal from infrared decoder will start
a proper power-up see Figure 6 on page 12.
The STFPC311 integrates a VFD controller with a
driver that is run on a 1/8 to 1/16-duty factor. It
consists of 12 segments output lines, 8 grid output
lines, 8 shared segments/grid output drive lines, a
display memory, a control circuit, and a key scan
circuit. Serial data is input to the STFPC311
through the SPI Interface of a microcontroller
(STB, D_IN, D_OUT, and CLK).
Additionally, this IC can support 2 general
purpose input switches (SW1 and SW2).
Features
■ DVD players
■ VCD players
■ AV equipment like Home Stereo
■ POS Systems
Part number
STFPC311
Temperature range
-40 to 85°C
Package
PQFP-52
May 2006
Rev 1
1/39
www.st.com
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