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ML9204 Datasheet(PDF) 1 Page - OKI electronic componets |
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ML9204 Datasheet(HTML) 1 Page - OKI electronic componets |
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1 / 41 page  OKI Semiconductor PEDL9204-02 Issue Date: Oct. 12, 2004 ML9204-xx Preliminary 5 × 7 Dot Character × 24-Digit × 2-Line Display Controller/Driver with Character RAM (Built-in Key Scan) 1/41 GENERAL DESCRIPTION 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 • Logic power supply (V DD) : 3.3 V±10% or 5.0 V±10% • VFD tube drive power supply (V SEG, VCOM ) : 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 (VSEG = 60 V) All the driver outputs are high : –350 mA (VSEG = 60 V) • Segment driver (ADA, ADB) : –15 mA (VSEG = 60 V) • Grid driver (COM1 to 24) : –25 mA (VCOM = 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 COM1 to 24 can be set in 1 grid. • Display digits : 1 to 24 digits (9- to 24-bit arbitrary setting) • Display duty (brightness adjustment) : 0/1024 to 960/1024 stages • All lights ON/OFF • 5 interfaces with microcontroller:DI/O, CS, CP, RESET, INT • Built-in key scan circuit for 5 × 6 matrix key switch • Built-in key scan circuit for 3-channel encoder type rotary switch • Built-in oscillation circuit Crystal oscillation or ceramic oscillation: 4.0 MHz (Typ) • Standby function Inhibiting the oscillator circuit provides low power consumption. • Package options: 128-pin plastic QFP (QFP128-P-1420-0.50-K) (ML9204-xxGA) |
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