OKI ML9203-xxGA Datasheet

E2C0041-19-64

Preliminary

¡ Semiconductor ML9203-xx

This version: Jun. 1999

¡ Semiconductor

ML9203-xx

5 ¥ 7 Dot Character ¥ 16-Digit ¥ 2-Line Display Controller/Driver with Character RAM

GENERAL DESCRIPTION

The ML9203-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 16 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.
The ML9203-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

• VFD tube drive power supply (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 (V
All the driver outputs are high : –350 mA (V

- Segment driver (ADA, ADB) : –20 mA (V

- Grid driver (COM1 to 16) : –50 mA (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 16 (display digit) ¥ 1 bit (symbol data; can be used for a cursor.)

- DCRAM_A 16 (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 16 (display digit) ¥ 1 bit (symbol data; can be used for a cursor.)

- DCRAM_B 16 (display digit) ¥ 8 bits(register for character data display)

• Display control function

- Display digit : 1 to 16 digits

- Display duty (brightness adjustment) : 0 to 1024 stages

- All lights ON/OFF

• 3 interfaces with microcontroller : DA, CS, CP (4 interfaces when RESET is added)

• Built-in oscillation circuit
Crystal oscillation or ceralock oscillation : 4.0 MHz (Typ)

• Package options:
100-pin plastic QFP (QFP100-P-1420-0.65-BK) (Product name: ML9203-xxGA)

) : 3.3 V±10% or 5.0 V±10%

DD

) : 20 to 60 V

DISP

=60V)

DISP

=60V)

DISP

=60V)

DISP

=60V)

DISP

1/30

¡ Semiconductor ML9203-xx

BLOCK DIAGRAM

V

DISP

V

DD

D-GND

L-GND

RESET

DA

CP
CS

8bit
Shift
Register

Command

Decoder

Control

Circuit

DCRAM_A

16w ¥ 8b

DCRAM_B

16w ¥ 8b

Address
Selector

CGROM_A

240w

¥

CGRAM_A

16w

¥

35b

ADRAM_B

16w ¥ 1b

CGROM_B

240w

¥

CGRAM_B

16w

¥

35b

ADRAM_B

16w ¥ 1b

35b

35b

Segment

Driver

Segment

Driver

Segment

Driver

Segment

Driver

SEGA1

SEGA35

ADA

SEGB1

SEGB35

ADB

OSC0

OSC1

Timing

Generator 2

Timing

Generator 1

Oscillator

Write
Address
Counter

Read
Address
Counter

Digit

Control

Duty

Control

COM1

Grid

Driver

COM16

2/30

¡ Semiconductor ML9203-xx

INPUT AND OUTPUT CONFIGURATION

Schematic Diagram of Logic Portion Input Circuit

V

DD

INPUT

L-GND

Schematic Diagram of Driver Output Circuit

V

DISP

V

DD

V

L-GND

DISP

OUTPUT

D-GND

D-GND

3/30

¡ Semiconductor ML9203-xx

PIN CONFIGURATION (TOP VIEW)

SEGA16

SEGA17

SEGA18

SEGA19

SEGA20

SEGA21

SEGA22

SEGA23

SEGA24

SEGA25

SEGA26

SEGA27

SEGA28

SEGA29

SEGA30

SEGA31

SEGA32

SEGA33

SEGA34

SEGA35

SEGA15
SEGA14
SEGA13

SEGA12
SEGA11
SEGA10

SEGA9
SEGA8
SEGA7

SEGA6
SEGA5

SEGA4
SEGA3
SEGA2
SEGA1
SEGB1
SEGB2
SEGB3
SEGB4
SEGB5

SEGB6
SEGB7

SEGB8

SEGB9
SEGB10
SEGB11

SEGB12
SEGB13
SEGB14
SEGB15

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

999897969594939291908988878685

100

1
2
3
4
5
6
7
8
9

848382

81

80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51

V

DISP

ADA
COM9
COM10
COM11
COM12
COM13
COM14
COM15
COM16
D-GND
V

DD

DA

CP
CS
RESET

OSC1
OSC0
L-GND
D-GND

COM8
COM7

COM6
COM5
COM4
COM3

COM2
COM1
ADB
V

DISP

31323334353637383940414243444546474849

SEGB16

SEGB17

SEGB18

SEGB19

SEGB20

SEGB21

SEGB22

SEGB23

SEGB24

SEGB25

SEGB26

SEGB27

SEGB28

SEGB29

SEGB30

SEGB31

SEGB32

SEGB33

SEGB34

100-Pin Plastic QFP

50

SEGB35

4/30

¡ Semiconductor ML9203-xx

PIN DESCRIPTION

Pin Type Connects to

1 to 15,

81 to 100

SEGA1 to A35

16 to 50 SEGB1 to B35

53 to 60
71 to 78

COM1 to 16

O

O

VFD tube

anode

electrode

VFD tube

grid

electrode

VFD tube

ADA, ADB O52, 79

anode

electrode

69

51, 80

V

DD

L-GND62

—

V

DISP

Power
supply

D-GND61, 70

DA I68

CP I67

CS I66

Micro-

controller

Micro-

controller

Micro-

controller

DescriptionSymbol

VFD tube anode electrode drive output.
Directly connected to fluorescent display tube and a pull-down
resistor is not necessary. I

>–5 mA

OH

VFD tube grid electrode drive output.
Directly connected to fluorescent display tube and a pull-down
resistor is not necessary. I

>–50 mA

OH

VFD tube anode electrode drive output.
Directly connected to fluorescent display tube and a pull-down
resistor is not necessary. I

V

-L-GND are power supplies for internal logic.

DD

V

-D-GND are power supplies for driving fluorescent tubes.

DISP

Apply V

after VDD is applied.

DISP

>–20 mA

OH

Use the same power supply for L-GND and D-GND.

Serial data input (positive logic).
Input from LSB.

Shift clock input.
Serial data is shifted on the rising edge of CP.

Chip select input.
Serial data transfer is disabled when CS pin is "H" level.

Reset input.
"Low" initializes all the functions.
Initial status is as follows.

Micro-

RESET I65

controller

or

C, R

• Address of each RAM

• Data of each RAM

• Display digit

• Brightness adjusment

• All lights ON or OFF

address "00"H
Content is undefined
16 digits
0/1024

OFF mode
For a circuit when R and C are connected externally,
see Application Circuit.

Pins for oscillation.

OSC0 I63

Crystal or

ceralock

OSC1 O64

resonator

Connect crystal and capacitors or ceralock resonator and
capacitors

. (Use a built-in feedback resistor.)
Set the target oscillation frequency to 4 MHz.
For an external circuit, see APPLICATION CIRCUIT.

5/30

¡ Semiconductor ML9203-xx

ABSOLUTE MAXIMUM RATINGS

Parameter

Supply Voltage (1)
Supply Voltage (2)
Input Voltage
Power Dissipation
Storage Temperature

Output Current

Symbol Condition Rating Unit

—
—
—

Ta≥25°C

—

COM1 to COM16

ADA, ADB

V

V

V

T

I
I

DD

DISP

IN

P

D

STG

O1

O2

SEGA1 to SEGA35,

I

O3

SEGB1 to SEGB35

RECOMMENDED OPERATING CONDITIONS

Parameter

Supply Voltage (1)

Symbol Condition Min. Typ. Max. Unit

When the power supply

voltage is 5V (typ.)

V

DD

When the power supply

voltage is 3.3V (typ.)

–0.3 to 6.5

–0.3 to 70

764

DD

+0.3

mW

–0.3 to V

–55 to 150

4.5

–60 to 0.0
–30 to 0.0

–10 to 0.0

5.0

5.5

mA
mA

mA

3.0 3.3 3.6 V

V
V
V

°C

V

Supply Voltage (2) V
Operating Frequency
Frame Frequency
Operating Temperature

DISP

f

OSC

f

FR

T

op

— 20 — 60 V

Oscillation

DIGIT=1 to 16, oscillation

—

3.5
213
–40

4.0

244

—

4.5

275

85

MHz

Hz
°C

6/30

¡ Semiconductor ML9203-xx

ELECTRICAL CHARACTERISTICS

DC Characteristics

(V

=5.0V±10%, or VDD=3.3V±10%, V

DD

Parameter Symbol Applied pin Condition Min. Max. Unit

High Level Input Voltage

Low Level Input Voltage

V

IH

V

IL

*1

*1

=20 to 60V, Ta=–40 to +85°C, unless otherwise specified)

DISP

VDD=5.0V±10%

=3.3V±10%

V

DD

=5.0V±10%

V

DD

V

=3.3V±10%

DD

0.7V

0.8V
—
—

DD

DD

—
—

0.3V

0.2V

DD

DD

V
V
V
V

High Level Input Current

Low Level Input Current

High Level Output
Voltage

Low Level Output
Voltage

Current Consumption

I

I

V

OH1

V

OH2

V

OH3

V

OL1

I

DD1

I

DD2

I

DISP1

I

DISP2

IH

IL

*1

*1

COM1 to 16
ADA, ADB
SEG1 to 35

*2

V

DD

V

DISP

V

DISP

V

DISP

V

DISP

VDD=5.0V±10%, f

=3.3V±10%, f

V

DD

f

=4.0MHz,

OSC

no load

*1) CS, CP, DA RESET
*2) SEGA1 to A35, SEGB1 to B35, ADA, COM1 to 16

VIH=V

DD

VIL=0.0V

=60V, I
=60V, I

=60V, I

OH1

OH2

OH3

=–50mA
=–20mA

—

OSC

OSC

All output lights ON

All output lights OFF

=–5mA

=4.0MHz
=4.0MHz

V
V
V

–1.0

–1.0

DISP

DISP

DISP

–1.5
–1.5
–1.5

1.0

1.0

—
—
—

— 1.0 V

—
—
—
—

6
4
1

T.B.D

µA

µA

V
V
V

mA
mA
mA
mA

7/30

¡ Semiconductor ML9203-xx

AC Characteristics

=5.0V±10%, or VDD=3.3V±10%, V

(V

DD

Parameter Symbol Condition Min. Max. Unit

CP Frequency f
CP Pulse Width

DA Setup Time
DA Hold Time

CS Setup Time
CS Hold Time
CS Wait Time

Data Processing Time

RESET Pulse Width

t

t

RESET Time t
DA Wait Time

t

All Output Slew Rate

V

Rise Time

DD

VDD Off Time t

C

t

CW

t

DS

t

DH

t

CSS

t

CSH

t

CSW

DOFF

WRES

RSON

RSOFF

t

R

t

F

t

PRZ

POF

=20 to 60V, Ta=–40 to +85°C, unless otherwise specified)

DISP

— — 1.0 MHz
—
—
—
—

Oscillating state

—

Oscillating state

When RESET signal is input from

microcontroller etc. externally

—
—

t

=20% to 80%

Cl=100pF

R

t

=80% to 20%

F

When mounted in the unit

300
300
300
300

8

300

4

—
—
—
—
—
—
—

ns
ns
ns
ns
ms
ns
ms

300 — ns

300 — ns
300

—

—

2.0

ns

ms
— 2.0 ms
—

100

ms

When mounted in the unit, VDD=0.0V 5.0 — ms

8/30

¡ Semiconductor ML9203-xx

TIMING DIAGRAM

Symbol VDD=3.3V±10% VDD=5.0V±10%

• Data Timing

CS

CP

DA

V

IH

V

IL

t

CSS

t

DS

VALID VALID VALID VALID

0.8 V

0.2 V

t

DH

DD

DD

t

DOFF

t

CW

1/f

0.7 V

DD

0.3 V

DD

t

CSW

t

C

t

CW

CSH

V

IH

V

IL

V

IH

V

IL

V

IH

V

IL

• Reset Timing

V

DD

RESET

DA

• Output Timing

All outputs

t

PRZ

t

RSON

t

RSOFF

t

RSOFF

0.8 V

DD

t

POF

=

t

R

t

F

When input externally

t

When external
R and C are
connected

WRES

0.0 V

V

IH

0.5 V
V

IL

V

IH

V

IL

0.8 V

0.2 V

DD

DISP
DISP

9/30

¡ Semiconductor ML9203-xx

• Digit Output Timing (for 16-digit display, at a duty of 976/1024)

T=16/ f

OSC

COM1
COM2
COM3
COM4
COM5
COM6
COM7
COM8
COM9
COM10
COM11
COM12
COM13
COM14
COM15
COM16

Frame cycle
Display timing
Blank timing

t1=1024T

=61T

t

2

t

=3T

3

(t1=4.096 ms when f

=240 ms when f

(t

2

(t

=16 ms when f

3

osc

osc

=4.0 MHz)

osc

=4.0 MHz)

=4.0 MHz)

V

DISP

D-GND

ADA, ADB,
SEGA1 to A35,
SEGB1 to B35

V

DISP

D-GND

10/30