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GENERAL DESCRIPTION

The ML9203-xx is a 5 x 7 dot matrix type vacuum fluorescent display tube controller driver IC which displays characters, numerics and symbols of a maximum of 16 digits x 2 lines.

Dot matrix vacuum fluorescent display tube drive signals are generated by serial data sent from a micro-controller. A display system is easily realized by internal ROM and RAM for character display.

FEATURES

? Logic power supply (VDD) : 3.3 V±10 or 5.0 V±10

? VFD tube drive power supply (VDISP) : 20 to 60 V

? VFD driver output current

(VFD driver output can be connected directly to the VFD tube.

No pull-down resistor is required.)

- Segment driver (SEGA1 to A35, SEGB1 to B35)

Only one driver output is high : –5 mA (VDISP=60V)

All the driver outputs are high : –350 mA (VDISP=60V)

- Segment driver (ADA, ADB) : –20 mA (VDISP=60V)

- Grid driver (COM1 to 16) : –50 mA (VDISP=60V)

? Content of display

SEGA1 to SEGA35 and ADA

- CGROM_A 5x7 dots : 240 types (character data)

- CGRAM_A 5x7 dots : 16 types (character data)

- ADRAM_A 16 (display digit) x 1 bit (symbol data; can be used for a cursor.)

- DCRAM_A 16 (display digit) x 8 bits(register for character data display)

SEGB1 to SEGB35 and ADB

- CGROM_B 5x7 dots : 240 types (character data)

- CGRAM_B 5x7 dots : 16 types (character data)

- ADRAM_B 16 (display digit) x 1 bit (symbol data; can be used for a cursor.)

- DCRAM_B 16 (display digit) x 8 bits(register for character data display)

? Display control function

- Display digit : 1 to 16 digits

- Display duty (brightness adjustment) : 0 to 1024 stages

- All lights ON/OFF

? 3 interfaces with microcontroller : DA, CS, CP (4 interfaces when RESET is added)

? Built-in oscillation circuit

Crystal oscillation or ceralock oscillation : 4.0 MHz (Typ)

? Package options:

100-pin plastic QFP (QFP100-P-1420-0.65-BK) (Product name: ML9203-xxGA)