Semiconductor
ML9205-01
1/34
FEDL9205-02
Semiconductor
ML9205-01
5
7 Dot Character 16-Digit Display Controller/Driver with Character RAM
GENERAL DESCRIPTION
The ML9205-01 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.
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) : 8 stages
All lights ON/OFF
3 interfaces with microcontroller
: DA, CS, CP (4 interfaces when RESET is added)
1-byte instruction execution (excluding data write to RAM)
Built-in oscillation circuit (external R and C)
Package options:
80-pin QFP package (QFP80-P-1414-0.65-K) (Product name : ML9205-01GP)
80-pin QFP package (QFP80-P-1420-0.80-BK)(Product name : ML9205-01GA)
FEDL9205-02
This version: Sep. 2000
Previous version: Jun. 1999
Semiconductor
ML9205-01
3/34
FEDL9205-02
INPUT AND OUTPUT CONFIGURATION
Schematic Diagrams of Logic Portion Input and Output Circuits
Input Pin
Output Pin
Schematic Diagram of Driver Output Circuit
GND
V
DD
GND
INPUT
V
DD
GND
V
DD
GND
OUTPUT
V
DD
V
FL
V
DISP
V
FL
OUTPUT
V
DISP
Semiconductor
ML9205-01
4/34
FEDL9205-02
PIN CONFIGURATION (TOP VIEW)
NC: No connection
80-Pin Plastic QFP
(QFP80-P-1414-0.65-K)
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
AD2
AD1
V
DISP2
NC
V
FL2
P4
P3
P2
P1
V
DD
DA
CP
CS
RESET
OSC1
OSC0
GND
V
FL1
COM24
COM23
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
V
DISP1
COM1
COM2
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
COM22
COM21
COM20
COM19
COM18
COM17
COM16
COM15
COM14
COM13
COM12
COM11
COM10
COM9
COM8
COM7
COM6
COM5
COM4
COM3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
AD3
AD4
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
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