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E2C0044-19-96

隆 Semiconductor

隆 Semiconductor

MSM9223

GENERAL DESCRIPTION

This version: Sep. 1999

MSM9223

Previous version: Aug. 1999

27-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming, ADC and Keyscan

The MSM9223 is a full CMOS controller/driver for Duplex or Triplex vacuum fluorescent

display tube. It conststs of 27-segment driver outputs and 3-grid pre-driver outputs, so that it

can drive directly up to 81-segment VFD.

MSM9223 features a digital dimming function, a 6-ch ADC, a 5

樓

5 keyscan circuit and an encoder

type switch interface.

MSM9223 provides an interface with a microcontroller only by three signal lines: DATA I/O,

CLOCK and CS.

FEATURES

鈥?Supply voltage (V

DD

)

鈥?Duplex/Triplex selectable

鈥?Applicable VFD tube

: 8 to 18.5V (Built-in 5V regulator for logic)

: 2 Grids

樓

27 Anodes VFD tube

: 3 Grids

樓

27 Anodes VFD tube

鈥?27-segment driver outputs

: I

OH

=鈥?mA at V

OH

=V

DD

鈥?.8V (SEG1 to 19)

I

OH

=鈥?0mA at V

OH

=V

DD

鈥?.8V (SEG20 to 27)

鈥?3-grid pre-driver outputs

: I

OL

=10mA at V

OL

=2V

鈥?Built-in digital dimming circuit (10-bit resolution)

鈥?Built-in 6-ch A/D converter

鈥?Built-in 5

樓

5 keyscan circuit

鈥?Interface circuit for an encoder type rotary switch

鈥?Built-in oscillation circuit (external R and C)

鈥?Built-in Power-On-Reset circuit

鈥?Package:

64-pin plastic QFP (QFP64-P-1420-1.00-BK)

Product name: MSM9223GS-BK

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