Page 1
Ordering number : ENN6792
71001TN (OT) No. 6792-1/14
Overview
The LC75814V is a 1/4 duty general-purpose LCD driver
that can be used for frequency display in electronic tuners
under the control of a microcontroller. The LC75814V can
drive an LCD with up to 64 segments directly. The
LC75814V can also control up to 4 general-purpose
output ports. Since the LC75814V uses separate power
supply systems for the LCD drive block and the logic
block, the LCD driver block power-supply voltage can be
set to any voltage in the range 2.7 to 6.0 volts, regardless
of the logic block power-supply voltage.
Features
• Support for 1/4 duty 1/2 bias or 1/4 duty 1/3 bias drive
of up to 64 segments under serial data control.
• Serial data input supports CCB format communication
with the system controller.
• Serial data control of the power-saving mode based
backup function and all the segments forced off function
• Serial data control of switching between the segment
output port and the general-purpose output port
functions
• High generality, since display data is displayed directly
without decoder intervention.
• Independent V
LCD
for the LCD driver block (V
LCD
can
be set to any voltage in the range 2.7 to 6.0 volts,
regardless of the logic block power-supply voltage.)
• The INH pin can force the display to the off state.
• RC oscillator circuit
Package Dimensions
unit: mm
3191A-SSOP30
115
16
7.6
0.65
9.75
0.5
5.6
0.1
1.5max
30
0.22
(0.33)
0.15
(1.3)
SANYO: SSOP30
[LC75814V]
LC75814V
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
1/4 Duty General-Purpose LCD Driver
CMOS IC
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO 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 products described or contained
herein.
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is a SANYO’s original bus format and all the
bus addresses are controlled by SANYO.
Page 2
Pin Assignment
No. 6792-2/14
LC75814V
DIP1/S1
ILC00283
CLP2/S2
CEP3/S3
P4/S4
OSCS5
V
SS
S6
V
LCD
2S7
V
LCD
1S8
V
LCD
S9
V
DD
S10
COM4S11
COM3S12
COM2S13
COM1S14
S16S15
LC75814V
INH
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS= 0 V
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage
V
DD
max V
DD
–0.3 to +7.0 V
V
LCD
max V
LCD
–0.3 to +7.0 V
V
IN
1 CE, CL, DI, INH –0.3 to +7.0 V
Input voltage V
IN
2 OSC –0.3 to VDD+ 0.3 V
V
IN
3 V
LCD
1, V
LCD
2 –0.3 to V
LCD
+ 0.3 V
Output voltage
V
OUT
1 OSC –0.3 to VDD+ 0.3 V
V
OUT
2 S1 to S16, COM1 to COM4, P1 to P4 –0.3 to V
LCD
+ 0.3 V
I
OUT
1 S1 to S16 300 µA
Output current I
OUT
2 COM1 to COM4 3 mA
I
OUT
3 P1 to P4 5 mA
Allowable power dissipation Pd max Ta = 85°C 100 mW
Operating temperature Topr –40 to +85 °C
Storage temperature Tstg –55 to +125 °C
Allowable Operating Ranges at Ta = –40 to +85°C, VSS= 0 V
Parameter Symbol Conditions
Ratings
Unit
min typ max
Supply voltage
V
DD
V
DD
2.7 6.0 V
V
LCD
V
LCD
2.7 6.0 V
Input voltage
V
LCD
1 V
LCD
1 2/3 V
LCD
V
LCD
V
V
LCD
2 V
LCD
2 1/3 V
LCD
V
LCD
V
Input high level voltage V
IH
CE, CL, DI, INH 0.8 V
DD
6.0 V
Input low level voltage V
IL
CE, CL, DI, INH 0 0.2 V
DD
V
Recommended external resistance R
OSC
OSC 43 kΩ
Recommended external capacitance C
OSC
OSC 680 pF
Guaranteed oscillation range f
OSC
OSC 25 50 100 kHz
Data setup time t
ds
CL, DI: Figure 2 160 ns
Data hold time t
dh
CL, DI: Figure 2 160 ns
CE wait time t
cp
CE, CL: Figure 2 160 ns
CE setup time t
cs
CE, CL: Figure 2 160 ns
CE hold time t
ch
CE, CL: Figure 2 160 ns
High level clock pulse width t
øH CL: Figure 2 160 ns
Low level clock pulse width t
øL CL: Figure 2 160 ns
Rise time t
r
CE, CL, DI: Figure 2 160 ns
Fall time t
f
CE, CL, DI: Figure 2 160 ns
INH switching time t
c
INH, CE: Figure 3 10 µs
Top view
Page 3
No. 6792-3/14
LC75814V
Parameter Symbol Conditions
Ratings
Unit
min typ max
Hysteresis V
H
CE, CL, DI, INH 0.1 V
DD
V
Input high level current I
IH
CE, CL, DI, INH; VI= 6.0 V 5.0 µA
Input low level current I
IL
CE, CL, DI, INH; VI= 0 V –5.0 µA
V
OH
1 S1 to S16; IO= –20 µA V
LCD
– 0.9 V
Output high level voltage V
OH
2 COM1 to COM4; IO= –100 µA V
LCD
– 0.9 V
V
OH
3 P1 to P4; IO= –1 mA V
LCD
– 0.9 V
V
OL
1 S1 to S16; IO= 20 µA 0.9 V
Output low level voltage V
OL
2 COM1 to COM4; IO= 100 µA 0.9 V
V
OL
3 P1 to P4; IO= 1 mA 0.9 V
V
MID
1
COM1 to COM4; 1/2 bias,
1/2 V
LCD
– 0.9 1/2 V
LCD
+ 0.9 V
I
O
= ±100 µA
V
MID
2
S1 to S16; 1/3 bias,
2/3 V
LCD
– 0.9 2/3 V
LCD
+ 0.9 V
I
O
= ±20 µA
Output middle level voltage*
1
V
MID
3
S1 to S16; 1/3 bias,
1/3 V
LCD
– 0.9 1/3 V
LCD
+ 0.9 V
I
O
= ±20 µA
V
MID
4
COM1 to COM4; 1/3 bias,
2/3 V
LCD
– 0.9 2/3 V
LCD
+ 0.9 V
I
O
= ±100 µA
V
MID
5
COM1 to COM4; 1/3 bias,
1/3 V
LCD
– 0.9 1/3 V
LCD
+ 0.9 V
I
O
= ±100 µA
Oscillator frequency f
OSC
OSC; R
OSC
= 43 kΩ, C
OSC
= 680 pF 40 50 60 kHz
I
DD
1 VDD; power saving mode 5 µA
I
DD
2 VDD; VDD= 6.0 V, output open, fosc = 50 k Hz 230 460 µA
I
LCD
1 V
LCD
; power saving mode 5 µA
Current drain
I
LCD
2
V
LCD
; V
LCD
= 6.0 V, output open
100 200 µA
1/2 bias, fosc = 50 k Hz
I
LCD
3
V
LCD
; V
LCD
= 6.0 V, output open
60 120 µA
1/3 bias, fosc = 50 k Hz
Electrical Characteristics for the Allowable Operating Ranges
Note: *1 Excluding the bias voltage generation divider resistors built in the V
LCD
1 and V
LCD
2. (See Figure 1.)
ILC00269
V
LCD
V
LCD
1
V
LCD
2
To the common segments drivers
Except these resistors
V
SS
Figure 1
Page 4
No. 6792-4/14
LC75814V
Figure 2
Block Diagram
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
tf
tøL tøH
tds
tcp tcs tch
tdh
tr
50%
CE
CL
DI
ILC00271
2. When CL is stopped at the high level
V
DD
V
LCD
OSC
V
LCD
1
V
LCD
2
V
SS
DI S16
S15
S5
S4 / P4
S3 / P3
S2 / P2
S1 / P1
COM4
COM3
COM2
COM1
ILC00272
CL
CE
ADDRESS
DETECTOR
SEGMENT DRIVER & LATCH
SHIFT REGISTER
COMMON
DRIVER
CLOCK
GENERATOR
INH
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
tr
tøH tøL
tds
tcp tcs tch
tdh
tf
50%
CE
CL
DI
ILC00270
1. When CL is stopped at the low level
Page 5
Pin Functions
No. 6792-5/14
LC75814V
CE: Chip enable
CL: Synchronization clock
DI: Transfer data
H
—
S1/P1 to
S4/P4
S5 to S16
Pin
1 to 4
5 to 16
— O Open
Segment outputs for displaying the display data transferred by serial data input. The pins
S1/P1 to S4/P4 can be used as general-purpose output ports when so set up by the
control data.
COM1
COM2
COM3
COM4
17 to 20 — O Open
Common driver outputs.
The frame frequency f
O
is given by: fO= (f
OSC
/512) Hz.
OSC
26
CE
CL
DI
28
29
30
Serial data transfer inputs. These pins are
connected to the control microprocessor.
—
I/O
V
DD
I GND
Oscillator connection
An oscillator circuit is formed by connecting an external resistor and capacitor to this pin.
V
LCD
1
23 — I Open
Used to apply the LCD drive 2/3 bias voltage externally. This pin must be connected to
V
LCD
2 when 1/2 bias drive is used.
V
LCD
2
24 — I Open
Used to apply the LCD drive 1/3 bias voltage externally. This pin must be connected to
V
LCD
1 when 1/2 bias drive is used.
V
DD
21 — — —Logic block power supply. Provide a voltage in the range 2.7 to 6.0 V.
V
LCD
22 — — —LCD driver block power supply. Provide a voltage in the range 2.7 to 6.0 V.
V
SS
25 — — —Ground pin. Connect to ground.
INH 27 L I GND
Display off control input
•INH = low (V
SS
): Off
S1/P1 to S4/P4 = Low
(These pins are forcibly set to the segment output port function and
fixed at the V
SS
level.)
S5 to S16 = Low (V
SS
),
COM1 to COM4 = Low (V
SS
)
•INH = high (V
DD
): On
Note that serial data transfers can be performed when the
display is forced off by this pin.
Active I/O
Handling
when unused
FunctionPin No.
Serial Data Transfer Format
1. When CL is stopped at the low level
Note: DD ... Direction data
1
B0
CL
CE
DI
ILC00273
1B11B21B30A00A11A20A3D1 D2 D3
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32
0 P0 P1 P2 DR SC BU 0
CCB address
8 bits
Display data
32 bits
Control data
7 bits
DD
1 bit
1B01B11B21B30A00A11A20A3D33
D34 D35 D53 D54 D55 D56 D57 D58 D59 D60 D61 D62 D63 D64
0 0 0 0 0 0 0 1
CCB address
8 bits
Display data
32 bits
Fixed data
7 bits
DD
1 bit
Page 6
No. 6792-6/14
LC75814V
2. When CL is stopped at the high level
Note: DD ... Direction data
• CCB address...............4FH
• D1 to D64...................Display data
• P0 to P2......................Segment output port/general-purpose output port switching control data
• DR..............................1/2 bias drive or 1/3 bias drive switching control data
• SC...............................Segments on/off control data
• BU..............................Normal mode/power-saving mode control data
1
B0
CL
CE
DI
ILC00274
1B11B21B30A00A11
A2D1A3
0 D2 D3
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32
0 P0 P1 P2 DR SC BU 0
CCB address
8 bits
Display data
32 bits
Control data
7 bits
DD
1 bit
1B01B11B21B30A00A11A20A3D33 D34 D35 D53 D54 D55 D56 D57 D58 D59 D60 D61 D62 D63 D64
0 0 0 0 0 0 0 1
CCB address
8 bits
Display data
32 bits
Fixed data
7 bits
DD
1 bit
Serial Data Transfer Examples
• When 33 or more segments are used, all 80 bits of the serial data must be sent.
• When fewer than 33 segments are used, only 40 bits of serial data need to be sent. However, the display data D1 to D32
and the control data must be sent.
1B01B11B21B30A00A11A20 D1 D2 D21D22D23 D24 D25 D26 D27 D28
40 bits8 bits
D29 D30 D31 D32 0 P0 P1 P2 DR SC BU 0D3
A3
1B01B11B21B30A00A11A20 D33D34 D53D54 D55D56 D57 D58 D59 D60 D61 D62 D63D64 0 0 0 0 0 0 0 1D35
A3
1B01B11B21B30A00A11A20 D1 D2 D21D22 D23 D24 D25 D26 D27 D28
40 bits8 bits
D29 D30 D31 D32 0 P0 P1 P2 DR SC BU 0D3
A3
Note: When fewer than 33 segments are used, transfers such as that shown in the figure below cannot be used.
ILC00275
40 bits8 bits
1B01B11B21B30A00A11A20 D33D34 D53D54 D55D56 D57 D58 D59 D60 D61 D62 D63D64 0 0 0 0 0 0 0 1D35
A3
Page 7
Control Data Functions
1. P0 to P2: Segment output port/general-purpose output port switching control data.
These control data bits switch the S1/P1 to S4/P4 output pins between their segment output port and general-purpose
output port functions.
Note: Sn (n = 1 to 4): Segment output ports
Pn (n = 1 to 4): General-purpose output ports
Also note that when the general-purpose output port function is selected, the output pins and the display data will
have the correspondences listed in the tables below.
For example, if the output pin S4/P4 has the general-purpose output port function selected, it will output a high level
(V
LCD
) when the display data D13 is 1, and will output a low level (VSS) when D13 is 0.
2. DR: 1/2 bias drive or 1/3 bias drive switching control data
This control data bit selects either 1/2 bias drive or 1/3 bias drive.
3. SC: Segments on/off control data
This control data bit controls the on/off state of the segments.
However, 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.
4. BU: Normal mode/power-saving mode control data
This control data bit selects either normal mode or power-saving mode.
No. 6792-7/14
LC75814V
Control data Output pin states
P0 P1 P2 S1/P1 S2/P2 S3/P3 S4/P4
0 0 0 S1 S2 S3 S4
0 0 1 P1 S2 S3 S4
0 1 0 P1 P2 S3 S4
0 1 1 P1 P2 P3 S4
1 0 0 P1 P2 P3 P4
Output pin Corresponding display data
S1/P1 D1
S2/P2 D5
S3/P3 D9
S4/P4 D13
DR Drive type
0 1/3 bias drive
1 1/2 bias drive
SC Display state
0 On
1 Off
BU Mode
0 Normal mode
Power saving mode (The OSC pin oscillator is stopped, and the common and segment output pins go to the V
SS
level. However, the
1 S1/P1 to S4/P4 output pins that are set to be general-purpose output ports by the control data P0 to P2 can be used as general-
purpose output ports.)
Page 8
No. 6792-8/14
LC75814V
Display Data to Segment Output Pin Correspondence
Note: This applies to the case where the S1/P1 to S4/P4 output pins are set to be segment output ports.
For example, the table below lists the segment output states for the S11 output pin.
Segment
COM1 COM2 COM3 COM4
output pin
S1/P1 D1 D2 D3 D4
S2/P2 D5 D6 D7 D8
S3/P3 D9 D10 D11 D12
S4/P4 D13 D14 D15 D16
S5 D17 D18 D19 D20
S6 D21 D22 D23 D24
S7 D25 D26 D27 D28
S8 D29 D30 D31 D32
S9 D33 D34 D35 D36
S10 D37 D38 D39 D40
S11 D41 D42 D43 D44
S12 D45 D46 D47 D48
S13 D49 D50 D51 D52
S14 D53 D54 D55 D56
S15 D57 D58 D59 D60
S16 D61 D62 D63 D64
Display data
Segment output pin (S11) state
D41 D42 D43 D44
0 0 0 0 The LCD segments corresponding to COM1 to COM4 are off.
0 0 0 1 The LCD segment corresponding to COM4 is on.
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.
0 1 0 0 The LCD segment corresponding to COM2 is on.
0 1 0 1 The LCD segments corresponding to COM2 and COM4 are on.
0 1 1 0 The LCD segments corresponding to COM2 and COM3 are on.
0 1 1 1 The LCD segments corresponding to COM2, COM3 and COM4 are on.
1 0 0 0 The LCD segment corresponding to COM1 is on.
1 0 0 1 The LCD segments corresponding to COM1 and COM4 are on.
1 0 1 0 The LCD segments corresponding to COM1 and COM3 are on.
1 0 1 1 The LCD segments corresponding to COM1, COM3 and COM4 are on.
1 1 0 0 The LCD segments corresponding to COM1 and COM2 are on.
1 1 0 1 The LCD segments corresponding to COM1, COM2 and COM4 are on.
1 1 1 0 The LCD segments corresponding to COM1 to COM3 are on.
1 1 1 1 The LCD segments corresponding to COM1 to COM4 are on.
Page 9
No. 6792-9/14
LC75814V
1/4 Duty, 1/2 Bias Drive Technique
1/4 Duty, 1/2 Bias Waveforms
ILC00276
512
f
OSC
[Hz]
COM1
V
LCD
COM2
COM3
COM4
LCD driver output when all LCD
segments corresponding to COM1,
COM2, COM3, and COM4 are turned off.
LCD driver output when only LCD
segments corresponding to COM1 are
on.
LCD driver output when only LCD
segments corresponding to COM2 are
on.
LCD driver output when LCD segments
corresponding to COM1 and COM2 are
on.
LCD driver output when LCD segments
corresponding to COM1 and COM3 are
on.
LCD driver output when LCD segments
corresponding to COM2 and COM3 are
on.
LCD driver output when LCD segments
corresponding to COM1, COM2, and
COM3 are on.
LCD driver output when LCD segments
corresponding to COM2 and COM4 are
on.
LCD driver output when all LCD
segments corresponding to COM1,
COM2, COM3, and COM4 are on.
LCD driver output when only LCD
segments corresponding to COM4 are
on.
LCD driver output when only LCD
segments corresponding to COM3 are
on.
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
V
LCD
V
LCD
1, V
LCD
2
0V
Page 10
No. 6792-10/14
LC75814V
1/4 Duty, 1/3 Bias Drive Technique
1/4 Duty, 1/3 Bias Waveforms
ILC00277
512
f
OSC
[Hz]
COM1
COM2
COM3
COM4
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
V
LCD
V
LCD
2
V
LCD
1
0V
LCD driver output when all LCD
segments corresponding to COM1,
COM2, COM3, and COM4 are turned off.
LCD driver output when only LCD
segments corresponding to COM1 are
on.
LCD driver output when only LCD
segments corresponding to COM2 are
on.
LCD driver output when LCD segments
corresponding to COM1 and COM2 are
on.
LCD driver output when LCD segments
corresponding to COM1 and COM3 are
on.
LCD driver output when LCD segments
corresponding to COM2 and COM3 are
on.
LCD driver output when LCD segments
corresponding to COM1, COM2, and
COM3 are on.
LCD driver output when LCD segments
corresponding to COM2 and COM4 are
on.
LCD driver output when all LCD
segments corresponding to COM1,
COM2, COM3, and COM4 are on.
LCD driver output when only LCD
segments corresponding to COM4 are
on.
LCD driver output when only LCD
segments corresponding to COM3 are
on.
Page 11
No. 6792-11/14
LC75814V
The INH pin and Display Control
Since the IC internal data (the display data D1 to D64 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 S16, and COM1 to COM4 to the VSSlevel.) and during this period send serial data from the 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 3.)
Notes on the Power On/Off Sequences
Applications should observe the following sequence when turning the LC75814V power on and off.
• At power on: Logic block power supply (VDD) on → LCD driver block power supply (V
LCD
) on
• At power off: LCD driver block power supply (V
LCD
) off → Logic block power supply (VDD) off
However, if the logic and LCD driver block use a shared power supply, then the power supplies can be turned on and off
at the same time.
Figure 3
Notes on Controller Transfer of Display Data
Since the LC75814V accept display data (D1 to D64) divided into two separate transfer operations, we recommend that
applications transfer all of the display data within a period of less than 30 ms to prevent observable degradation of
display quality.
t1
ILC00278
INH
CE
V
DD
V
LCD
t2
t3
UndefinedDefined
Display and control data transfer
Undefined
UndefinedDefinedUndefined
tc
V
IL
V
IL
Note: t1 ≥ 0
t2 > 0
t3 ≥ 0 (t2 > t3)
tc
...
10 µs min
D1 to D32
P0 to P2
DR, SC, BU
Internal data
Internal data (D33 to D64)
Page 12
No. 6792-12/14
LC75814V
Sample Application Circuit 1
1/2 Bias (for use with normal panels)
Note: *2 When a capacitor except the recommended external capacitance (C
OSC
= 680 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200pF.
Sample Application Circuit 2
1/2 Bias (for use with large panels)
Note: *2 When a capacitor except the recommended external capacitance (C
OSC
= 680 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200pF.
ILC00279
(P1)
(P3)
(P2)
(P4)
*2
C ≥ 0.047 µF
+3V
+5V
From the
microcontroller
C
General-purpose
output ports
Used for functions
such as backlight
control
COM1
COM3
COM2
COM4
P2 / S2
P4 / S4
P1 / S1
P3 / S3
S5
S14
S15
S16
OSC
V
DD
V
SS
V
LCD
V
LCD
1
V
LCD
2
INH
CE
CL
DI
LCD panel (up to 64 segments)
ILC00280
(P1)
(P3)
(P2)
(P4)
*2
10 kΩ ≥ R ≥ 1 kΩ
C ≥ 0.047 µF
+3V
+5V
C R
R
COM1
COM3
COM2
COM4
P2 / S2
P4 / S4
P1 / S1
P3 / S3
S5
S14
S15
S16
OSC
V
DD
V
SS
V
LCD
V
LCD
1
V
LCD
2
INH
CE
CL
DI
From the
microcontroller
General-purpose
output ports
Used for functions
such as backlight
control
LCD panel (up to 64 segments)
Page 13
No. 6792-13/14
LC75814V
Sample Application Circuit 3
1/3 Bias (for use with normal panels)
Note: *2 When a capacitor except the recommended external capacitance (C
OSC
= 680 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200pF.
Sample Application Circuit 4
1/3 Bias (for use with large panels)
Note: *2 When a capacitor except the recommended external capacitance (C
OSC
= 680 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200pF.
ILC00281
(P1)
(P3)
(P2)
(P4)
*2
C ≥ 0.047µF
+3V
+5V
C
C
COM1
COM3
COM2
COM4
P2 / S2
P4 / S4
P1 / S1
P3 / S3
S5
S14
S15
S16
OSC
V
DD
V
SS
V
LCD
V
LCD
1
V
LCD
2
INH
CE
CL
DI
From the
microcontroller
General-purpose
output ports
Used for functions
such as backlight
control
LCD panel (up to 64 segments)
ILC00282
(P1)
(P3)
(P2)
(P4)
*2
10 kΩ ≥ R ≥ 1 kΩ
C ≥ 0.047 µF
+3V
+5V
C
C R
R
R
COM1
COM3
COM2
COM4
P2 / S2
P4 / S4
P1 / S1
P3 / S3
S5
S14
S15
S16
OSC
V
DD
V
SS
V
LCD
V
LCD
1
V
LCD
2
INH
CE
CL
DI
From the
microcontroller
General-purpose
output ports
Used for functions
such as backlight
control
LCD panel (up to 64 segments)
Page 14
PS No. 6792-14/14
LC75814V
This catalog provides information as of July, 2001. Specifications and information herein are subject to
change without notice.
Specifications of any and all SANYO 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.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or 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 products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining 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 permission of SANYO Electric 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 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. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
Loading...