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 STFPC320
Product Page
Following STFPC311, ST has introduced the new STFPC320 Vacuum Fluorescent
Display (VFD) driver and controller with built-in stand-by power management
to the microcontroller (MCU) along with an integrated Real-Time Clock
(RTC). This new device represents a complete low-cost, integrated solution
to control and drive a front-panel VFD display. The STFPC320 VFD driver
and controller allows communication with the MCU through a serial I2C
interface. Several functions such as watchdog timers and remote control
decoding protocols like Philips RC-5, NEC, Sony, Thomson and Matsushita
are integrated.
STFPC320 block diagram
| STFPC320 Main Features And Benefits |
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Wake-up from front panel / remote control keys / external pin like AV-PIN8 of SCART interface / Real Time Clock |
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Integrates highly-accurate, low-power RTC Infra-red decoder for Philips, NEC, Sony, Thomson and Matsushita protocols |
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Ultra-low stand-by current consumption (~1mA) |
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Attractive to qualify a DVD/STB system to meet energy saving requirements of < 1W or 0.3W or 0.1W (Energy Star or Blue Angel Standard) |
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Replaces the expensive MCU solution with a single front panel VFD controller |
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Easy to implement software due to I2C interface |
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PQFP52 Pb-free package |
DVD
recorders
Media
center PCs
Personal
Video Recorders (PVRs)
| Comparison Between STFPC311 And STFPC320 |
DVD
recorders
Media
center PCs
Personal
Video Recorders (PVRs)
| Select Inputs |
STFPC311 |
STFPC320 |
Type of device |
VFD driver |
VFD driver + accurate, low power RTC |
| Remote control
protocols |
Philips RC5 and NEC |
Philips RC5, NEC, Matsushita,
Thomson, Sony |
Serial interface to host |
Serial |
I2C |
| Interrupt |
No interrupt to host |
Includes an IRQ–N output
to Host |
Wake-up |
Front panel and remote control keys |
Front panel keys, remote control keys, RTC and
AV–PIN8 of SCART |
| AV–PIN8
(SCART) |
No feature to wake-up from SCART |
Able to wake-up from SCART |
RESET–N |
Only POR |
Includes both POR and external hardware reset |
External crystal |
No crystal required |
Requires a 32.768kHz crystal
for RTC |
Number of wake-up keys (hot keys) |
8 for front panel and 8 for remote control |
Includes all 24 keys for front panel and remote
control |
RC device address |
Supports one remote controller
at a time |
Supports multiple remote controllers
at a time |
Main advantages |
Low-cost VFD controller & driver due to high
integration for power management |
A single chip solution to replace the main MCUbased
front panel ICs for VFD display |
| Low-Cost, Highly Integrated Solution |
This device is available in the lead-free PQFP52 package
with a pitch of 0.65mm allowing ease of PCB routing on a single-layer
or double-layer Class 2, or Class 3 type PCB using a low-cost soldering
technology. It lowers the component count on the front panel board resulting
in a low-cost, highly-integrated solution.
| STFPC320 For Driving LED Displays |
The STFPC320 can be used to drive LED displays by using
some additional discrete electronic components.
An evaluation kit is available upon request. It contains:
STFPC320
demoboard and PC software
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