PT6397 Datasheet, PDF (1/4 Pages) Princeton Technology Corp – 32 Bits VFD Driver Controller with RTC IC

PT6397
32 Bits VFD Driver Controller with RTC IC
DESCRIPTION
PT6397 is a Vacuum Fluorescent Display (VFD)
Controller. 32 segment/grid output driver lines, one
display memory, control circuit and RTC circuit are all
incorporated into a single chip to build a highly reliable
peripheral device for a single-chip microcomputer and
STB application. Serial data is fed to PT6397 via a
4-wire serial interface or I²C bus. It is housed in a
52-pin LQFP package.
APPLICATIONS
• Microcomputer peripheral devices
• STB application
BLOCK DIAGRAM
FEATURES
• CMOS technology
• Multiple display modes: 32 segments/0 grid to 8
segments/24 grids
• 8-step dimming circuitry
• 3 GPIO ports
• 4-wire serial interface for clock, data input, data
output and strobe
• I²C bus interface: 400Kbits/s, slave mode only
• RTC circuit:
- Clock counter and calendar counter in BCD
format
- Alarm function with interrupt
- 12-hour or 24-hour time display system
- Recognize leap year from the year 2000 to 2099
• Provides RTC display with two segment
configuration types: 4-timing & 5-timing formats
• Provides 32 bits segment/grid driver outputs
• No external resistors needed for driver outputs
• Crystal oscillator: 4.194304MHz
• Internal power-on reset
• Available in 52-pin LQFP
Tel: [phone]‧Fax: [phone]‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan