STFPC311 Datasheet | STMicroelectronics

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 (VDD) to - 30V (VSS) Integrated VFD driver and controller PQFP-52 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 (VDD - 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, 20m A, max) Serial interface (STB, CLK, DIN, and DOUT) munication 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 mand Programmable 8 hot keys for key scan mand Low power consumption in standby mode 2 general purpose input ports (SW1, SW2) Available in PQFP-52 package Description The STFPC311 is a plete, 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, DIN, DOUT, and CLK). Additionally, this IC can support 2 general purpose input switches (SW1 and SW2). - - - - - - - - - - Features - - -...