ML9204-xx Description
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. Built-in key scan for 3-channel encoder type rotary switch and 5 × 6 matrix key switch allow the user to receive each switch input.
ML9204-xx Key Features
- Logic power supply (VDD)
- VFD tube drive power supply (VSEG, V ) : 20 to 60 V
- VFD driver output current (VFD driver output can be connected directly to the VFD tube. No pull-down resistor is require
- Segment driver (SEGA1 to A35, SEGB1 to B35) Only one driver output is high : -5 mA (VSEG = 60 V) All the driver outputs
- Segment driver (ADA, ADB) : -15 mA (VSEG = 60 V)
- Grid driver (1 to 24) : -25 mA (V = 60 V)
- Content of display SEGA1 to SEGA35 and ADA
- CGROM_A : 5 × 7 dots 240 types (character data)
- CGRAM_A : 5 × 7 dots 16 types (character data)
- ADRAM_A : 24 (display digit)× 1 bit (symbol data; can be used for a cursor.)