STFPC320 Datasheet, PDF (1/78 Pages) STMicroelectronics – Front panel controller/driver with standby power management and real-time clock

STFPC320
Front panel controller/driver with standby
power management and real-time clock
Features
■ IC front panel VFD controller driver
■ Standby power management to the host
■ 3.3 V (V_DD) and down to -30 V (V_SS)
supply for the IC
■ IR remote control decoder
(Philips, NEC, Thomson, Sony, Matsushita)
■ Multiple display modes
(12 seg. and 16 digits to 20 seg and 8 digits)
■ High voltage outputs (V_DD - 33.3 V max)
■ No additional external resistors required for
driver outputs (P-CH. open drain + pull-down
resistor outputs)
■ Key scanning (up to 12 x 2 matrix = 24 keys)
■ LED ports (4 channels 20 mA max each)
■ Serial I²C interface (SCL, SDA)
communication protocol b
■ Operating speed: up to 400 kHz for I²C
■ Programmable hotkeys for IR remote control
command and KEYSCAN command
■ Low power consumption in standby mode
■ Dimming circuit (8 steps)
■ Real-time clock (accuracy ± 25 secs/month)
■ Wake-up alarm
■ Internal oscillator with external crystal for RTC
■ Available in PQFP-52 package (0.65 mm pitch
Applications
■ VCR, DVD and personal video recorders
■ Home theatre with clock feature, STB and HTiB
(home theater in a box)
Table 1. Device summary
Order code
Operating temperature
STFPC320
-40°C to 85°C
PQFP-52
Description
The STFPC320 is designed to integrate the VFD
driving, key-scan matrix, LED driving, infrared (IR)
remote control decoding and real-time clock
(RTC) into one integrated solution. All the
functions are programmable using the I²C bus.
Low power consumption is achieved during
standby operation. The STFPC320 provides the
standby power management to the main chipset.
The STFPC320 is housed in a 52-pin PQFP
package. The pin assignments and application
circuit are optimized for an easy PCB layout and
cost saving advantages.
Package
PQFP-52
Packaging
Tape and reel
July 2008
Rev 2
1/78
www.st.com
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