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
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¡ 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
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¡ 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
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¡ 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
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¡ 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.
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¡ 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
— — —
Ta25°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
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¡ 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
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¡ 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
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¡ 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
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¡ 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
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