MSM9223 データシートの表示（PDF） - Oki Electric Industry

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MSM9223

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

Oki Electric Industry 

E2C0044-19-96

¡ ¡ SemiconSduectomr iconductor

MSM9223

This version: SMepS.M19992923

Previous version: Aug. 1999

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

GENERAL DESCRIPTION

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 ¥ 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

• Supply voltage (VDD)

• Duplex/Triplex selectable

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

• Applicable VFD tube

: 2 Grids ¥ 27 Anodes VFD tube

: 3 Grids ¥ 27 Anodes VFD tube

• 27-segment driver outputs

: IOH=–5mA at VOH=VDD–0.8V (SEG1 to 19)

IOH=–10mA at VOH=VDD–0.8V (SEG20 to 27)

• 3-grid pre-driver outputs

: IOL=10mA at VOL=2V

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

• Built-in 6-ch A/D converter

• Built-in 5 ¥ 5 keyscan circuit

• Interface circuit for an encoder type rotary switch

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

• Built-in Power-On-Reset circuit

• Package:

64-pin plastic QFP (QFP64-P-1420-1.00-BK) Product name: MSM9223GS-BK

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