ML9226 Datasheet, PDF (1/26 Pages) OKI electronic componets – 32-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming, ADC and Keyscan

OKI Semiconductor
FEDL9226-01
Issue Date: Dec. 11, 2002
ML9226
32-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming, ADC and Keyscan
GENERAL DESCRIPTION
The ML9226 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.
ML9226 features a digital dimming function, a 8-ch ADC, a 5 × 5 keyscan circuit and an encoder type switch
interface.
ML9226 provides an interface with a microcontroller only by four signal lines: DATA I/O, CLOCK, CS.
FEATURES
• Supply voltage (V_DISP)
: 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
: I_OH = –5 mA at V_OH = V_DISP – 0.8 V (SEG1 to 22)
I_OH = –10 mA at V_OH = V_DISP – 0.8 V (SEG23 to 32)
I_OL = 500 uA at V_OL = 2.0 V (SEG1 to 32)
• 3-grid pre-driver outputs
: I_OH = – 5.0 mA at V_OH = V_DISP – 0.8V
I_OL = 10 mA at V_OL = 2.0V
• 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) ( ML9226GA)
1/26