LC75836W [SANYO]
1/4-Duty General-Purpose LCD Display Driver; 四分之一-职务通用液晶显示驱动
| 型号： | LC75836W |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | 1/4-Duty General-Purpose LCD Display Driver |
| 文件： | 总18页 (文件大小：145K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA0428A
CMOS IC
1/4-Duty General-Purpose
LCD Display Driver
LC75836W
Overview
The LC75836W is 1/4-duty general-purpose microprocessor-controlled LCD driver that can be used in applications such
as frequency display in products with electronic tuning. In addition to being able to drive up to 140 segments directly, the
LC75836W can also control up to 4 general-purpose output ports.
Features
• 1/4 duty, 1/3 bias drive (Up to 140 segment can be displayed.)
• Serial data input supports CCB* format communication with the system controller (support 3V operation).
• Serial data control of the power-saving mode based backup function and the all segments forced off function.
• Serial data control of switching between the segment output port and general-purpose output port functions.
• Serial data control of the frame frequency of the common and segment output waveforms.
• Either RC oscillator operating or external clock operating mode can be selected with the serial control data.
• High generality, since display data is displayed directly without the intervention of a decoder circuit.
• The INH pin allows the display to be forced to the off state.
• RC oscillation circuit (with external resistor and capacitor)
• CCB is a registered trademark of SANYO Electric Co., Ltd.
• CCB is SANYO Semiconductor's original bus format. All bus addresses are managed by SANYO
Semiconductor for this format.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
's products or
equipment.
32509HKIM 20070522-S00003/70506HKIM No.A0428-1/18
LC75836W
Specifications
Absolute Maximum Ratings at Ta = 25°C, V = 0V
SS
Parameter
Maximum supply voltage
Input voltage
Symbol
Conditions
Ratings
-0.3 to +7.0
Unit
V
V
max
V
DD
V
DD
CE, CL, DI,
1
INH
OSC, V 1, V
-0.3 to +7.0
IN
V
V
2
2
DD
-0.3 to V +0.3
DD
IN
DD
Output voltage
Output current
V
S1 to S35, COM1 to COM4, P1 to P4, OSC
-0.3 to V +0.3
DD
V
OUT
1
I
I
I
S1 to S35
300
μA
OUT
OUT
OUT
2
3
COM1 to COM4
P1 to P4
3
5
mA
Allowable power dissipation
Operating temperature
Storage temperature
Pdmax
Topr
Ta=85°C
100
mW
°C
-40 to +85
-55 to +125
Tstg
°C
Allowable Operating Ranges at Ta = -40 to +85°C, V = 0V
SS
Ratings
typ
Parameter
Symbol
Conditions
Unit
min
4.5
max
6.0
Supply voltage
V
V
V
V
V
V
DD
DD
DD
DD
Input voltage
V
V
1
1
2
2/3V
1/3V
V
V
DD
DD
DD
DD
2
DD
DD
6.0
Input high-level voltage
Input low-level voltage
V
1
CE, CL, DI,
INH
OSC external clock operating mode
CE, CL, DI,
0.4V
0.4V
IH
DD
V
V
V
2
V
0.2V
0.2V
IH
DD
0
DD
DD
DD
V
V
1
2
INH
IL
OSC external clock operating mode
OSC RC oscillator operating mode
0
IL
Recommended external resistor
for RC oscillation
Rosc
Cosc
fosc
39
kΩ
pF
Recommended external capacitor
for RC oscillation
OSC RC oscillator operating mode
OSC RC oscillator operating mode
1000
38
Guaranteed range of RC
oscillation
19
76
kHz
External clock operating frequency
f
OSC external clock operating mode [Figure 4]
OSC external clock operating mode [Figure 4]
19
30
38
50
76
70
kHz
%
CK
External clock duty cycle
Data setup time
Data hold time
D
CK
tds
tdh
tcp
tcs
tch
tφH
tφL
tr
CL, DI
CL, DI
CE, CL
CE, CL
CE, CL
CL
[Figure 2][Figure 3]
[Figure 2][Figure 3]
[Figure 2][Figure 3]
[Figure 2][Figure 3]
[Figure 2][Figure 3]
[Figure 2][Figure 3]
[Figure 2][Figure 3]
[Figure 2][Figure 3]
[Figure 2][Figure 3]
[Figure 5]
160
160
160
160
160
160
160
ns
ns
ns
ns
ns
ns
ns
ns
ns
μs
CE wait time
CE setup time
CE hold time
High-level clock pulse width
Low-level clock pulse width
Rise time
CL
CE, CL, DI
CE, CL, DI
160
160
Fall time
tf
switching time
tc
, CE
INH
INH
10
No.A0428-2/18
LC75836W
Electrical Characteristics for the Allowable Operating Ranges
Ratings
typ
Parameter
Symbol
Pin
Conditions
Unit
V
min
max
Hysteresis
V
H
CE, CL, DI,
CE, CL, DI,
OSC
INH
INH
0.03V
DD
Input high-level current
Input low-level current
Output high-level voltage
I
I
1
2
V = 6.0V
I
5.0
5.0
IH
μA
V = V
external clock operating mode
IH
I
DD
I
1
2
CE, CL, DI,
OSC
V = 0V
I
INH
-5.0
IL
μA
I
V = 0V external clock operating mode
I
-5.0
-0.9
IL
V
1
S1 to S35
I
= -20μA
V
V
V
OH
O
O
DD
DD
DD
V
2
COM1
I
= -100μA
OH
V
-0.9
-0.9
to COM4
P1 to P4
V
3
1
2
I
I
I
= -1mA
= 20μA
= 100μA
OH
O
O
O
Output low-level voltage
V
S1 to S35
0.9
0.9
OL
OL
V
COM1
V
to COM4
P1 to P4
V
3
I
=1mA
0.9
DD
OL
O
Output middle-level
voltage *1
V
V
V
V
1
2
3
4
S1 to S35
1/3 bias I = ±20μA
2/3V
2/3V
MID
MID
MID
MID
O
DD
-0.9
+0.9
S1 to S35
1/3 bias I = ±20μA
1/3V
1/3V
DD
O
DD
-0.9
+0.9
V
COM1
1/3 bias I = ±100μA
2/3V
2/3V
DD
O
DD
to COM4
COM1
-0.9
+0.9
1/3 bias I = ±100μA
1/3V
1/3V
DD
O
DD
to COM4
OSC
-0.9
+0.9
Oscillator frequency
Current drain
fosc
RC oscillator operating mode
Rosc = 39 kΩ, Cosc = 1000pF
Power-saving mode
30.4
38
45.6
5
kHz
I
1
V
DD
DD
I
2
V
V
= 6.0V output open
DD
DD
DD
RC oscillator operating mode
fosc = 38kHz
350
700
μA
I
3
V
V
= 6.0V output open
DD
DD
DD
External clock operating mode
f
= 38kHz
2 = 0.5V
450
900
CK
V
IH
DD
V 2 = 0.1V
IL
DD
Note: *1 Excluding the bias voltage generation divider resistors built in the V 1 and V 2. (See Figure 1.)
DD DD
V
DD
V
V
1
2
DD
To the common and segment drivers
DD
Except these resistors.
V
SS
Figure 1
No.A0428-3/18
LC75836W
1. When CL is stopped at the low level
V
1
IH
CE
V
1
IL
tφH
tφL
V
1
IH
CL 50%
V
1
IL
tr
tf
tcp tcs
tch
V
1
1
IH
DI
V
IL
tds
tdh
Figure 2
2. When CL is stopped at the high level
V
1
IH
CE
V 1
IL
tφL
tφH
V
1
IH
50%
IL
CL
DI
V
1
tf
tr
tcp tcs
tch
V
1
IH
V
1
IL
tds
tdh
Figure 3
3. OSC pin clock timing in external clock operating mode
1
t
H
t
L
CK
CK
f
=
[kHz]
CK
t
t
H+t
L
L
CK
CK
CK
V
2
IH
50%
IL
OSC
t
H
V
2
CK
H+t
D
=
×100[%]
CK
CK
Figure 4
No.A0428-4/18
LC75836W
Package Dimensions
unit : mm (typ)
3163B
9.0
7.0
36
25
24
13
37
48
1
12
0.5
0.15
0.18
(0.75)
SANYO : SQFP48(7X7)
Pin Assignment
36
37
25
24
COM3
COM4
S35
S24
S23
S22
S21
S20
S19
S18
S17
S16
S15
S14
S13
V
DD
V
1
DD
DD
V
2
LC75836W
V
SS
OSC
INH
CE
CL
DI
48
1
13
12
Top view
No.A0428-5/18
LC75836W
Block Diagram
COMMON
DRIVER
SEGMENT DRIVER & LATCH
INH
CLOCK
GENERATOR
CONTROL
REGISTER
OSC
V
DD
SHIFT REGISTER
V
1
DD
2
DD
CCB INTERFACE
V
V
SS
No.A0428-6/18
LC75836W
Pin Functions
Handling
when
Symbol
Pin No.
Function
Active
-
I/O
O
unused
OPEN
S1/P1
to S4/P4
S5 to S34
S35
1 to 4
Segment outputs for displaying the display data transferred by serial data input.
The S1/P1 to S4/P4 pins can be used as general-purpose output ports when so set
up by the control data.
5 to 34
39
COM1
35 to 38
Common driver outputs. The frame frequency is fo [Hz].
-
-
O
OPEN
to COM4
OSC
44
Oscillator connection. An oscillator circuit is formed by connecting an external
resistor and capacitor to this pin. This pin can be used as the external clock input
pin if external clock operating mode is selected with the control data.
Serial data transfer inputs. Must be connected to the controller.
CE: Chip enable
I/O
V
DD
CE
CL
DI
46
47
48
H
-
I
I
I
GND
GND
CL: Synchronization clock
DI: Transfer data
45
Display off control input
L
I
INH
• INH = low (V ) ...Display forced off
SS
S1/P1 to S4/P4 = low (V
)
SS
(These pins are forcibly set to the segment output port function
and held at the V
level.)
)
SS
S5 to S35 = low (V
SS
COM1 to COM4 = low (V
)
SS
OSC = Z (high impedance)
RC oscillation stopped
Inhibits external clock input.
• INH = high (V )...Display on
DD
RC oscillation enabled (RC oscillator operating mode)
Enables external clock input (external clock operating mode).
However, serial data transfer is possible when the display is forced off.
Used to apply the LCD drive 2/3 bias voltage externally.
Used to apply the LCD drive 1/3 bias voltage externally.
Power supply pin. A power voltage of 4.5 to 6.0V must be applied to this pin.
Ground pin. Must be connected to ground.
V
V
1
2
41
42
40
43
-
-
-
-
I
I
OPEN
DD
OPEN
DD
V
-
-
-
-
DD
V
SS
No.A0428-7/18
LC75836W
Serial Data Transfer Formats
1. When CL is stopped at the low level
CE
CL
D1
DI
0
1
1
0
0
0
1
0
D2
D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 D33 D34 D35 D36
0
0
0
0
P0 P1 P2 OC SC BU
0
0
FC0 FC1 FC2
B0 B1 B2 B3 A0 A1 A2 A3
Control data
10 bit
Display data
36 bit
CCB address
8 bit
DD
2 bit
0
1
1
0
0
0
1
0
D37 D38
D59 D60 D61 D62 D63 D64 D65 D66 D67 D68 D69 D70 D71 D72
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bit
Display data
36 bit
DD
2 bit
Fixed data
10 bit
0
1
1
0
0
0
1
0
D73 D74
D95 D96 D97 D98 D99 D100 D101 D102 D103 D104 D105 D106 D107 D108
0
0
0
0
1
0
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bit
Display data
36 bit
Fixed data
10 bit
DD
2 bit
0
1
1
0
0
0
1
0
D109
D110
D131 D132 D133 D134 D135 D136 D137 D138 D139 D140
0
0
0
0
0
0
0
0
1
1
B0 B1 B2 B3 A0 A1 A2 A3
Display data
32 bit
Fixed data
14 bit
CCB address
8 bit
DD
2 bit
Note: DD is the direction data.
No.A0428-8/18
LC75836W
2. When CL is stopped at the high level
CE
CL
DI
0
1
1
0
0
0
1
0
D1 D2
D37 D38
D73 D74
D109 D110
D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 D33 D34 D35 D36
0
0
0
0
FC0 FC1 FC2 P0 P1 P2 OC SC BU
0
0
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bit
Display data
36 bit
Control data
10 bit
DD
2 bit
0
1
1
0
0
0
1
0
D59 D60 D61 D62 D63 D64 D65 D66 D67 D68 D69 D70 D71 D72
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
Fixed data
10 bit
Display data
36 bit
CCB address
8 bit
DD
2 bit
0
1
1
0
0
0
1
0
D95 D96 D97 D98 D99 D100 D101 D102 D103 D104 D105 D106 D107 D108
0
0
0
0
1
0
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bit
Display data
36 bit
Fixed data
10 bit
DD
2 bit
0
1
1
0
0
0
1
0
D131 D132 D133 D134 D135 D136 D137 D138 D139 D140
0
0
0
0
0
0
0
0
1
1
B0 B1 B2 B3 A0 A1 A2 A3
Fixed data
14 bit
CCB address
8 bit
Display data
32 bit
DD
2 bit
Note: DD is the direction data.
• CCB address ....... "46H"
• D1 to D140 ......... Display data
• FC0 to FC2 ......... Common/segment output waveform frame frequency control data
• P0 to P2 .............. Segment output port/general-purpose output port switching control data
• OC ...................... RC oscillator operating mode/external clock operating mode switching control data
• SC ...................... Segments on/off control data
• BU ...................... Normal mode/power-saving mode control data
No.A0428-9/18
LC75836W
Serial Data Transfer Example
• When 109 or more segments are used
All 192 bits of serial data must be sent.
8 bit
48 bit
0
1
1
0
0
0
1
0
D
1
D2
D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 D33 D34 D35 D36
D59 D60 D61 D62 D63 D64 D65 D66 D67 D68 D69 D70 D71 D72
D95 D96 D97 D98 D99 D100 D101 D102 D103 D104 D105 D106 D107 D108
0
0
0
0
FC0 FC1 FC2 P0 P1 P2 OC SC BU
0
0
1
1
0
1
0
1
B0 B1 B2 B3 A0 A1 A2 A3
0
1
1
0
0
0
1
0
D37 D38
D73 D74
D109 D110
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
B0 B1 B2 B3 A0 A1 A2 A3
0
1 1 0 0 0 1 0
B0 B1 B2 B3 A0 A1 A2 A3
0
1
1
0
0
0
1
0
D131 D132 D133 D134 D135 D136 D137 D138 D139 D140 0 0 0 0
B0 B1 B2 B3 A0 A1 A2 A3
• When fewer than 109 segments are used
Either 48, 96, or 144 bits of serial data must be sent, depending on the number of segments to be used. However,
the serial data shown below (the D1 to D36 display data and the control data) must always be sent.
8 bit
48 bit
0
1
1
0
0
0
1
0
D1 D2
D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 D33 D34 D35 D36 0 FC0 FC1 FC2 P0 P1 P2 OC SC BU 0 0
B0 B1 B2 B3 A0 A1 A2 A3
No.A0428-10/18
LC75836W
Control Data Functions
1. FC0 to FC2: Common/segment output waveform frame frequency control data
These control data bits set the frame frequency of the common and segment output waveforms.
Control data
Frame frequency fo [Hz]
FC0
1
FC1
1
FC2
0
fosc/768,f /768
CK
1
1
1
fosc/576,f /576
CK
0
0
0
fosc/384,f /384
CK
0
0
1
fosc/288,f /288
CK
0
1
0
fosc/192,f /192
CK
2. P0 to P2: Segment output port/general-purpose output port switching control data
These control data bits switch the segment output port/general-purpose output port functions of the S1/P1 to S4/P4
output pins.
Control data
Output pin state
P0
0
P1
0
P2
0
S1/P1
S1
S2/P2
S3/P3
S3
S4/P4
S4
S2
S2
P2
P2
P2
0
0
1
P1
S3
S4
0
1
0
P1
S3
S4
0
1
1
P1
P3
S4
1
0
0
P1
P3
P4
Note: Sn (n = 1 to 4): Segment output ports
Pn (n = 1 to 4): General-purpose output ports
Note that when the general-purpose output port function is selected, the correspondence between the output pins and
the display data will be that shown in the table.
Output pin
Corresponding display data
S1/P1
D1
D5
S2/P2
S3/P3
D9
S4/P4
D13
For example, if the general-purpose output port function is selected for the S4/P4 output pin, that output pin will
output a high level (V ) when the display data D13 is 1, and a low level (V ) when the D13 is 0.
DD SS
3. OC: RC oscillator operating mode/external clock operating mode switching control data.
This control data bit switches the OSC pin function
(either RC oscillator operating mode or external clock operating mode).
OC
OSC pin function
0
RC oscillator operating mode
External clock operating mode
1
Note: An external resistor, Rosc, and an external capacitor, Cosc, must be connected to the OSC pin if RC oscillator
operating mode is selected.
4. SC: Segment on/off control data
This control data bit controls the on/off state of the segments.
SC
Display state
0
On
Off
1
Note that when the segments are turned off by setting SC to 1, the segments are turned off by outputting segment off
waveforms from the segment output pins.
No.A0428-11/18
LC75836W
5. BU: Normal mode/power-saving mode control data
This control data bit selects either normal mode or power saving mode.
BU
Mode
0
Normal mode
Power saving mode.
In RC oscillator operating mode (OC = 0), the OSC pin oscillator is stopped, and in external clock operating mode
(OC = 1), acceptance of the external clock is stopped. In this mode the common and segment output pins go to the
1
V
levels. However, S1/P1 to S4/P4 output pins that are set to be general-purpose output ports by the control data
SS
P0 to P2 can be used as general-purpose output ports.
No.A0428-12/18
LC75836W
Display Data and Output Pin Correspondence
Output pin
S1/P1
S2/P2
S3/P3
S4/P4
S5
COM1
COM2
COM3
COM4
Output pin
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
S31
S32
S33
S34
S35
COM1
D73
COM2
D74
COM3
D75
COM4
D76
D1
D2
D3
D4
D5
D6
D7
D8
D77
D78
D79
D80
D9
D10
D14
D18
D22
D26
D30
D34
D38
D42
D46
D50
D54
D58
D62
D66
D70
D11
D15
D19
D23
D27
D31
D35
D39
D43
D47
D51
D55
D59
D63
D67
D71
D12
D16
D20
D24
D28
D32
D36
D40
D44
D48
D52
D56
D60
D64
D68
D72
D81
D82
D83
D84
D13
D17
D21
D25
D29
D33
D37
D41
D45
D49
D53
D57
D61
D65
D69
D85
D86
D87
D88
D89
D90
D91
D92
S6
D93
D94
D95
D96
S7
D97
D98
D99
D100
D104
D108
D112
D116
D120
D124
D128
D132
D136
D140
S8
D101
D105
D109
D113
D117
D121
D125
D129
D133
D137
D102
D106
D110
D114
D118
D122
D126
D130
D134
D138
D103
D107
D111
D115
D119
D123
D127
D131
D135
D139
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
Note: Applies when the S1/P1 to S4/P4 output pins are set to their segment output function.
For example, the table below lists the output states for the S21 output pin.
Display data
Output pin (S21) state
D81
0
D82
0
D83
0
D84
0
The LCD segments corresponding to COM1, COM2, COM3, and COM4 are off.
The LCD segment corresponding to COM4 is on.
0
0
0
1
0
0
1
0
The LCD segment corresponding to COM3 is on.
0
0
1
1
The LCD segments corresponding to COM3 and COM4 are on.
The LCD segment corresponding to COM2 is on.
0
1
0
0
0
1
0
1
The LCD segments corresponding to COM2 and COM4 are on.
The LCD segments corresponding to COM2 and COM3 are on.
The LCD segments corresponding to COM2, COM3, and COM4 are on.
The LCD segment corresponding to COM1 is on.
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
The LCD segments corresponding to COM1 and COM4 are on.
The LCD segments corresponding to COM1 and COM3 are on.
The LCD segments corresponding to COM1, COM3, and COM4 are on.
The LCD segments corresponding to COM1 and COM2 are on.
The LCD segments corresponding to COM1, COM2, and COM4 are on.
The LCD segments corresponding to COM1, COM2, and COM3 are on.
The LCD segments corresponding to COM1, COM2, COM3, and COM4 are on.
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
No.A0428-13/18
LC75836W
Output Waveforms (1/4-Duty 1/3-Bias Drive Scheme)
fo[Hz]
V
V
V
DD
DD
DD
1
2
COM1
COM2
COM3
COM4
0V
V
V
V
0V
V
V
VD 2
0V
V
V
V
DD
DD
DD
1
2
DD
DD
1
D
DD
DD
DD
1
2
0V
V
V
V
DD
DD
DD
LCD driver output when all LCD segments corresponding to
COM1, COM2, COM3, and COM4 are off.
1
2
0V
V
V
V
DD
DD
DD
LCD driver output when only LCD segments
corresponding to COM1 are on.
1
2
0V
V
V
V
DD
DD
DD
LCD driver output when only LCD segments
corresponding to COM2 are on.
1
2
0V
V
V
V
DD
DD
DD
LCD driver output when LCD segments
corresponding to COM1 and COM2 are on.
1
2
0V
V
V
V
DD
DD
DD
LCD driver output when only LCD segments
corresponding to COM3 are on.
1
2
0V
V
V
V
DD
DD
DD
LCD driver output when LCD segments
corresponding to COM1 and COM3 are on.
1
2
0V
V
V
V
DD
DD
DD
LCD driver output when LCD segments
corresponding to COM2 and COM3 are on.
1
2
0V
V
V
V
DD
DD
DD
LCD driver output when LCD segments corresponding
to COM1, COM2, and COM3 are on.
1
2
0V
V
V
V
DD
DD
DD
LCD driver output when only LCD segments
corresponding to COM4 are on.
1
2
0V
V
V
V
DD
DD
DD
LCD driver output when LCD segments
corresponding to COM2, and COM4 are on.
1
2
0V
V
V
V
DD
DD
DD
LCD driver output when all LCD segments corresponding
to COM1, COM2, COM3, and COM4 are on.
1
2
0V
Control data
Frame frequency fo [Hz]
FC0
1
FC1
1
FC2
0
fosc/768,f /768
CK
1
1
1
fosc/576,f /576
CK
0
0
0
fosc/384,f /384
CK
0
0
1
fosc/288,f /288
CK
0
1
0
fosc/192,f /192
CK
No.A0428-14/18
LC75836W
Display Control and the INH Pin
Since the LSI internal data (the display data D1 to D140 and the control data) is undefined when power is first applied,
applications should set the INH pin low at the same time as power is applied to turn off the display. (This sets the S1/P1
to S4/P4, S5 to S35, and COM1 to COM4 pins to the V level.) and during this period send serial data from the
SS
controller. The controller should then set the INH pin high after the data transfer has completed. This procedure
prevents meaningless displays at power on.
(See Figure 5.)
t1
V
DD
INH
CE
V
1
IL
tc
V
1
IL
Display data and control data dtratransterred
D1 to D36,
Internal data FC0 to FC2, P0 to P2,
OC, SC, BU
Undefined
Undefined
Undefined
Undefined
Defined
Defined
Undefined
Undefined
Undefined
Undefined
Internal data (D37 to D72)
Internal data (D73 to D108)
Internal data (D109 to D140)
Defined
Defined
Notes: t1>0
tc⋅⋅⋅10μs min
Figure 5
No.A0428-15/18
LC75836W
Notes on Controller Transfer of Display Data
Since the LC75836W transfer the display data (D1 to D140) in four separate transfer operations, we recommend that
applications make a point of completing all four data transfers within a period of less than 30ms to prevent
observable degradation of display quality.
OSC Pin Peripheral Circuit
(1) RC oscillator operating mode (control data OC = 0)
An external resistor, Rosc, and an external capacitor, Cosc, must be connected between the OSC pin and GND if
RC oscillator operating mode is selected.
OSC
Rosc
Cosc
(2) External clock operating mode (control data OC = 1)
When the external clock operating mode is selected, insert a current protection resistor Rg (4.7 to 47kΩ) between
the OSC pin and external clock output pin (external oscillator). Determine the value of the resistance according to
the allowable current value at the external clock output pin. Also make sure that the waveform of the external
clock is not heavily distorted.
External clock output pin
External oscillator
OSC
Rg
V
DD
Rg
Note: Allowable current value at external clock output pin >
No.A0428-16/18
LC75836W
Sample Application Circuit 1
1/4 Duty, 1/3 Bias (for use with normal panels)
General-purpose
Output ports
(P1)
(P2)
(P3)
(P4)
Used for functions
such as backlight
control
*4
OSC
+5V
V
V
COM1
COM2
COM3
COM4
P1/S1
P2/S2
P3/S3
P4/S4
S5
DD
*3
1
DD
V
V
2
DD
C
C
SS
C≥0.047μF
INH
CE
CL
DI
*2
From the controller
S34
S35
*2: The pins to be connected to the controller (CE, CL, DI, INH) can handle 3V.
*3: In RC oscillator operating mode, an external resistor, Rosc, and an external capacitor, Cosc, must be connected
between the OSC pin and ground. If external clock operating mode is selected, a current protection resistor, Rg (4.7
to 47 kΩ), must be inserted between the external clock output pin (on the external oscillator) and the OSC pin.
(See the “OSC Pin Peripheral Circuit” section.)
*4: When a capacitor except the recommended external capacitance (Cosc = 1000pF) is connected to the OSC pin, it
should be in the range 220 to 2200pF.
Sample Application Circuit 2
1/4 Duty, 1/3 Bias (for use with large panels)
General-purpose
(P1)
Output ports
(P2)
(P3)
(P4)
Used for functions
such as backlight
control
*4
OSC
*3
V
V
COM1
COM2
COM3
COM4
P1/S1
P2/S2
P3/S3
P4/S4
S5
+5V
DD
DD
R
1
2
R
V
V
DD
C
C
R
SS
10kΩ≥R≥1kΩ
C≥0.047μF
INH
CE
*2
From the controller
CL
DI
S34
S35
*2: The pins to be connected to the controller (CE, CL, DI, INH) can handle 3V.
*3: In RC oscillator operating mode, an external resistor, Rosc, and an external capacitor, Cosc, must be connected
between the OSC pin and ground. If external clock operating mode is selected, a current protection resistor, Rg (4.7
to 47 kΩ), must be inserted between the external clock output pin (on the external oscillator) and the OSC pin.
(See the “OSC Pin Peripheral Circuit” section.)
*4: When a capacitor except the recommended external capacitance (Cosc = 1000pF) is connected to the OSC pin, it
should be in the range 220 to 2200pF.
No.A0428-17/18
LC75836W
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using
products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd.
products described or contained herein.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all
semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt
safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not
limited to protective circuits and error prevention circuits for safe design, redundant design, and structural
design.
In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are
controlled under any of applicable local export control laws and regulations, such products may require the
export license from the authorities concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise,
without the prior written consent of SANYO Semiconductor Co.,Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the
SANYO Semiconductor Co.,Ltd. product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
for volume production.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's
intellectual property rights which has resulted from the use of the technical information and products mentioned
above.
This catalog provides information as of March, 2009. Specifications and information herein are subject
to change without notice.
PS No.A0428-18/18
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