MSM9223 Datasheet, PDF (1/25 Pages) OKI electronic componets – 27-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming, ADC and Keyscan

E2C0044-19-96
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MSM9223
This version: S_Mep_S._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 (V_DD)
• 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
: I_OH=–5mA at V_OH=V_DD–0.8V (SEG1 to 19)
I_OH=–10mA at V_OH=V_DD–0.8V (SEG20 to 27)
• 3-grid pre-driver outputs
: I_OL=10mA at V_OL=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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