ML9209-xx controller driver Datasheet

ML9209-xx Datasheet, PDF, Equivalent


Part Number

ML9209-xx

Description

Vacuum fluorescent display tube controller driver

Manufacture

OKI electronic

Total Page 29 Pages
Datasheet
Download ML9209-xx Datasheet


ML9209-xx
OKI Semiconductor
ML9209-xx
Vacuum fluorescent display tube controller driver
FEDL9209-01
Issue Date: Oct. 20, 2004
GENERAL DESCRIPTION
The ML9209-xx is an alphanumeric type vacuum fluorescent display (VFD) tube controller driver IC which can
display alphanumeric characters, symbols, and bar charts.
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.
-01 is available as a general-purpose code.
Custom codes are provided on customer’s request.
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FEATURES
Logic power supply and vacuum fluorescent display tube driving power supply (VDD)
: 3.3 V±10% or 5.0 V±10%
Vacuum fluorescent display tube driving power supply (VFL)
: VDD – 20 V to VDD – 42 V
VFD driver output current
(VFD driver output can be connected directly to the VFD tube. No pull-down resistor is required.)
• Segment driver (SEG1–16)
• Segment driver (AD1, 2)
• Grid driver (COM1–16)
Content of display
: –6 mA (VFL = VDD – 42 V)
: –15 mA (VFL = VDD – 42 V)
: –30 mA (VFL = VDD – 42 V)
• CGROM
: 16 segments 240 types (character data)
• CGRAM
: 16 segments 16 types (character data)
• ADRAM
: 16 (display digit)× 2 bits (symbol data)
• DCRAM
: 16 (display digit) × 8 bits (register for character data display)
Display control function
• Display digits
: 1 to 16 digits
• Display duty (brightness adjustment) : 16 stages
• All display lights ON/OFF
Four interfaces with microcontroller:
DA, CS, CP, RESET
Instruction executable with 1 byte (excluding data write for each RAM)
Built-in oscillation circuit (resistor & capacitor connected externally)
Package options:
44-pin plastic QFP (QFP44-P-910-0.80-2K) (ML9209-xxGA)
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ML9209-xx
OKI Semiconductor
BLOCK DIAGRAM
VDD
GND
VFL
RESET
DA
CP
CS
8 bit
Shift
Register
DCRAM
16w × 8b
CGROM
240w×16b
CGRAM
16w × 16b
ADRAM
16w × 2b
Command
Decoder
Control
Circuit
Timing
Generator 1
OSC0
Oscillator
Address
Selector
Write
Address
Counter
Read
Address
Counter
Timing
Generator 2
Digit
Control
Duty
Control
FEDL9209-01
ML9209-xx
Segment
Driver
AD
Driver
SEG1
SEG16
AD1
AD2
Grid
Driver
COM1
COM16
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Features OKI Semiconductor ML9209-xx Vacuum fluor escent display tube controller driver FEDL9209-01 Issue Date: Oct. 20, 2004 GENERAL DESCRIPTION The ML9209-xx is an alphanumeric type vacuum fluorescent d isplay (VFD) tube controller driver IC which can display alphanumeric characte rs, symbols, and bar charts. Vacuum flu orescent display tube drive signals are generated by serial data sent from a m icro-controller. A display system is ea sily realized by internal ROM and RAM f or character display. -01 is available as a general-purpose code. Custom codes are provided on customer’s request. FEATURES • Logic power supply and va cuum fluorescent display tube driving p ower supply (VDD) : 3.3 V±10% or 5.0 V ±10% • Vacuum fluorescent display tu be driving power supply (VFL) : VDD – 20 V to VDD – 42 V • VFD driver ou tput current (VFD driver output can be connected directly to the VFD tube. No pull-down resistor is required.) • Se gment driver (SEG1–16) : –6 mA (VFL = VDD – 42 V) • Segment driver (AD1, 2) : –.
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