ML9226 参数 Datasheet PDF下载

OKI Semiconductor

ML9226

GENERAL DESCRIPTION

FEDL9226-01

Issue Date: Dec. 11, 2002

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

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

)

•

Duplex/Triplex selectable

•

Applicable VFD tube

•

•

•

•

•

•

•

•

•

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

: 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)

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