ML9204-xx Datasheet | OKI Electric

DESCRIPTION PEDL9204-02 Issue Date: Oct. 12, 2004 Preliminary 5 × 7 Dot Character × 24-Digit × 2-Line Display Controller/Driver with Character RAM (Built-in Key Scan) The ML9204-xx is a 5 × 7 dot matrix type vacuum fluorescent display tube controller driver IC which displays characters, numerics and symbols of a maximum of 24 digits × 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. 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. The ML9204-xx has low power consumption since it is made by CMOS process technology. - 01 is available as a general-purpose code. Custom codes are provided on customer’s request. FEATURES : 3.3 V±10% or 5.0 V±10% - 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 required.) - Segment driver (SEGA1 to A35, SEGB1 to B35) Only one driver output is high : - 5 m A (VSEG = 60 V) All the driver outputs are high : - 350 m A (VSEG = 60 V) - Segment driver (ADA, ADB) : - 15 m A (VSEG = 60 V) - Grid driver (1 to 24) : - 25 m A (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.) - DCRAM_A : 24 (display digit) × 8 bits (register for character data display) SEGB1 to SEGB35 and ADB - CGROM_B : 5 × 7 dots 240 types (character data) - CGRAM_B : 5 × 7 dots 16 types (character data) - ADRAM_B : 24 (display digit)× 1 bit (symbol data; can be used for a cursor.) - DCRAM_B : 24 (display digit) × 8 bits (register for character data display) - Display control function - GCRAM : Simultaneous output of 1 to 24...