OKI Semiconductor
FEDL9207-02
Issue Date: May 17, 2005
ML9207-xx
5
7 Dot Character
24-Digit Display Controller/Driver with Character RAM
1/35
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 (V
DD
)
: 3.3 V
10% or 5.0 V
10%
Fluorescent display tube drive power supply (V
DISP
) : 3.3 V
10% or 5.0 V
10%
Fluorescent display tube drive power supply (V
FL
) : 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
(V
FL
= 60 V)
Segment driver (AD1 to AD4)
: 10.0 mA
(V
FL
= 60 V)
Grid driver (COM1 to COM24)
: 50.0 mA
(V
FL
= 60 V)
General output port output current
Output driver (P1 to P4)
:
1.0 mA (V
DD
= 3.3 V
10%)
2.0 mA (V
DD
= 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.
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