ML9228 データシートの表示（PDF） - Oki Electric Industry

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ML9228

82-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming, Keyscan

Oki Electric Industry 

OKI Semiconductor

ML9228

82-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming, Keyscan

FEDL9228-01

Issue Date: Oct. 20, 2004

GENERAL DESCRIPTION

The ML9228 is a full CMOS controller/driver for Duplex or Triplex vacuum fluorescent display tube. It conststs

of 82-segment driver outputs and 3-grid pre-driver outputs, so that it can drive directly up to 246-segment VFD.

ML9228 features a digital dimming function, a 5 × 6 keyscan circuit.

FEATURES

• Driver Supply voltage (VDISP)

: 8.0V to 18.5V

• Logic Supply voltage (VDD)

: 3.3V±10%, 5.0V±10%

• Duplex/Triplex selectable

• Applicable VFD tube

: 2 Grids × 82 Anodes VFD tube

: 3 Grids × 82 Anodes VFD tube

• 82-segment driver outputs

: IOH = –6 mA at VOH = VDISP–0.8 V (SEG1 to 82)

• 3-grid pre-driver outputs

: IOL = 10 mA at VOL = 2 V

• Built-in digital dimming circuit (10-bit resolution)

• Built-in 5 × 6 keyscan circuit

• Built-in oscillation circuit (external R and C)

• Built-in Power-On-Reset circuit

• Package:

128-pin plastic QFP (QFP128-P-1420-0.50-K) (ML9228 GA)

1/25

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