GENERAL DESCRIPTION
The ML9207-xx is a dot matrix vacuum fluorescent display tube controller driver IC which displays characters, numerics and symbols. 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. The ML9207-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
• Logic power supply (VDD) : 3.3 V ±10% or 5.0 V ±10%
• Fluorescent display tube drive power supply (VDISP) : 3.3 V ±10% or 5.0 V ±10%
• Fluorescent display tube drive power supply (VFL) : –20 to –60 V
• VFD driver output current
(VFD driver output can be connected directly to the fluorescent display tube. No pull-down resistor is required.)
• Segment driver (SEG1 to SEG35) : –5.0 mA (VFL= –60 V)
• Segment driver (AD1 to AD4) : –10.0 mA (VFL= –60 V)
• Grid driver (COM1 to COM24) : –50.0 mA (VFL= –60 V)
• General output port output current
Output driver (P1 to P4) : ±1.0 mA (VDD= 3.3 V±10%) ±2.0 mA (VDD= 5.0 V±10%)
• Content of display
• CGROM 5 ×7 dots : 240 types (character data)
• CGRAM 5 ×7 dots : 16 types (character data)
• ADRAM 24 (display digit) ×4 bits (symbol data)
• DCRAM 24 (display digit) ×8 bits (register for character data display)
• General output port 4 bits (static operation)
• Display control function
• Display digit : 9 to 24 digits
• Display duty (brightness adjustment) : 0/1024 to 960/1024
• All lights ON/OFF
• 4 interfaces with microcontroller : DA, CS, CP, RESET
• 1-byte instruction execution (excluding data write to RAM and Display duty set)
• Built-in oscillation circuit
• Crystal oscillation or ceramic oscillation
•Package options:
80-pin QFP package (QFP80-P-1414-0.65-K) (Product name : ML9207-xxGP)
80-pin QFP package (QFP80-P-1420-0.80-BK) (Product name : ML9207-xxGA)
xx indicates the code number.