ML927

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)