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ML9222 Datasheet(PDF) 1 Page - OKI electronic componets

Part No. ML9222
Description  32-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming, ADC and Keyscan
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Manufacturer  OKI [OKI electronic componets]
Direct Link  http://www.oki.com
Logo OKI - OKI electronic componets

ML9222 Datasheet(HTML) 1 Page - OKI electronic componets

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¡ Semiconductor
ML9222
1/25
FEDL9222-02
GENERAL DESCRIPTION
The ML9222 is a full CMOS controller/driver for Duplex or Triplex vacuum fluorescent display
tube. It conststs of 32-segment driver outputs and 3-grid pre-driver outputs, so that it can drive
directly up to 96-segment VFD.
ML9222 features a digital dimming function, a 8-ch ADC, a 5 ¥ 5 keyscan circuit and an encoder
type switch interface.
ML9222 provides an interface with a microcontroller only by four signal lines: DATA I/O,
CLOCK, CS and INT.
FEATURES
• Supply voltage (VDD)
: 8 to 18.5V (Built-in 5V regulator for logic)
• Duplex/Triplex selectable
• Applicable VFD tube
: 2 Grids ¥ 32 Anodes VFD tube
: 3 Grids ¥ 32 Anodes VFD tube
• 32-segment driver outputs
: IOH=–5mA at VOH=VDD–0.8V (SEG1 to 22)
IOH=–10mA at VOH=VDD–0.8V (SEG23 to 32)
• 3-grid pre-driver outputs
: IOL=10mA at VOL=2V
• Built-in digital dimming circuit (10-bit resolution)
• Built-in 8-ch A/D converter
• Built-in 5 ¥ 5 keyscan circuit
• 3 interface circuits for an encoder type rotary switch
• Built-in oscillation circuit (external R and C)
• Built-in Power-On-Reset circuit
• Package:
80-pin plastic QFP (QFP80-P-1420-0.80-BK)
Product name: ML9222GA
¡ Semiconductor
ML9222
32-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming, ADC and Keyscan
FEDL9222-02
This version: Feb. 2000
Previous version: Nov. 1999


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