SANYO LC75814V

Ordering number : ENN6792
CMOS IC
LC75814V
1/4 Duty General-Purpose LCD Driver
Overview
Package Dimensions
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.
unit: mm
3191A-SSOP30
[LC75814V]
16
0.5
0.15
0.1
• 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 VLCD for the LCD driver block (VLCD 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
15
9.75
(1.3)
1.5max
1
Features
7.6
5.6
30
0.22
0.65
(0.33)
SANYO: SSOP30
• 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.
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.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
71001TN (OT) No. 6792-1/14
LC75814V
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V
Parameter
Symbol
Maximum supply voltage
Conditions
Ratings
Unit
VDD max
VDD
–0.3 to +7.0
V
VLCD max
VLCD
–0.3 to +7.0
V
VIN 1
CE, CL, DI, INH
–0.3 to +7.0
V
VIN 2
OSC
–0.3 to VDD + 0.3
V
VIN 3
VLCD 1, VLCD 2
–0.3 to VLCD + 0.3
V
–0.3 to VDD + 0.3
V
Input voltage
Output voltage
Output current
Allowable power dissipation
VOUT 1
OSC
VOUT 2
S1 to S16, COM1 to COM4, P1 to P4
IOUT 1
S1 to S16
IOUT 2
IOUT 3
Pd max
–0.3 to VLCD + 0.3
V
300
µA
COM1 to COM4
3
mA
P1 to P4
5
mA
100
mW
Ta = 85°C
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
Ratings
Parameter
Supply voltage
Input voltage
Input high level voltage
Input low level voltage
Symbol
Conditions
min
typ
Unit
max
VDD
VDD
2.7
6.0
V
VLCD
VLCD
2.7
6.0
V
VLCD1
VLCD1
2/3 VLCD
VLCD
V
VLCD2
VLCD2
1/3 VLCD
VLCD
V
6.0
V
VIH
CE, CL, DI, INH
0.8 VDD
VIL
CE, CL, DI, INH
0
Recommended external resistance
ROSC
OSC
Recommended external capacitance
COSC
OSC
Guaranteed oscillation range
fOSC
OSC
0.2 VDD
43
680
25
50
V
kΩ
pF
100
kHz
Data setup time
tds
CL, DI: Figure 2
160
ns
Data hold time
tdh
CL, DI: Figure 2
160
ns
CE wait time
tcp
CE, CL: Figure 2
160
ns
CE setup time
tcs
CE, CL: Figure 2
160
ns
CE hold time
tch
CE, CL: Figure 2
160
ns
High level clock pulse width
tøH
CL: Figure 2
160
ns
Low level clock pulse width
tøL
CL: Figure 2
160
Rise time
tr
CE, CL, DI: Figure 2
Fall time
tf
CE, CL, DI: Figure 2
INH switching time
tc
INH, CE: Figure 3
ns
160
ns
160
ns
10
µs
VDD
COM4
COM3
COM2
COM1
S16
S11
S12
S13
S14
S15
VLCD
S10
VLCD1
VLCD2
VSS
OSC
INH
CE
CL
DI
Pin Assignment
S9
S8
S7
S6
S5
P4/S4
P3/S3
P2/S2
P1/S1
LC75814V
Top view
ILC00283
No. 6792-2/14
LC75814V
Electrical Characteristics for the Allowable Operating Ranges
Ratings
Parameter
Symbol
Conditions
Hysteresis
VH
CE, CL, DI, INH
Input high level current
IIH
CE, CL, DI, INH; VI = 6.0 V
IIL
CE, CL, DI, INH; VI = 0 V
Input low level current
Output high level voltage
Output low level voltage
Output middle level voltage*1
Oscillator frequency
Current drain
min
typ
Unit
max
0.1 VDD
V
5.0
µA
–5.0
µA
VOH 1
S1 to S16; IO = –20 µA
VLCD – 0.9
V
VOH 2
COM1 to COM4; IO = –100 µA
VLCD – 0.9
V
VOH 3
P1 to P4; IO = –1 mA
VLCD – 0.9
VOL 1
S1 to S16; IO = 20 µA
0.9
VOL 2
COM1 to COM4; IO = 100 µA
0.9
V
VOL 3
P1 to P4; IO = 1 mA
0.9
V
VMID 1
COM1 to COM4; 1/2 bias,
IO = ±100 µA
1/2 VLCD – 0.9
1/2 VLCD + 0.9
V
VMID 2
S1 to S16; 1/3 bias,
IO = ±20 µA
2/3 VLCD – 0.9
2/3 VLCD + 0.9
V
VMID 3
S1 to S16; 1/3 bias,
IO = ±20 µA
1/3 VLCD – 0.9
1/3 VLCD + 0.9
V
VMID 4
COM1 to COM4; 1/3 bias,
IO = ±100 µA
2/3 VLCD – 0.9
2/3 VLCD + 0.9
V
VMID 5
COM1 to COM4; 1/3 bias,
IO = ±100 µA
1/3 VLCD – 0.9
1/3 VLCD + 0.9
V
fOSC
OSC; ROSC = 43 kΩ, COSC = 680 pF
IDD 1
VDD; power saving mode
IDD 2
VDD; VDD = 6.0 V, output open, fosc = 50 k Hz
ILCD 1
VLCD; power saving mode
ILCD 2
VLCD; VLCD = 6.0 V, output open
1/2 bias, fosc = 50 k Hz
ILCD 3
VLCD; VLCD = 6.0 V, output open
1/3 bias, fosc = 50 k Hz
40
V
50
60
V
kHz
5
µA
460
µA
5
µA
100
200
µA
60
120
µA
230
Note: *1 Excluding the bias voltage generation divider resistors built in the VLCD1 and VLCD2. (See Figure 1.)
VLCD
VLCD1
To the common segments drivers
VLCD2
Except these resistors
VSS
ILC00269
Figure 1
No. 6792-3/14
LC75814V
1. When CL is stopped at the low level
VIH
CE
VIL
tøH
CL
tøL
VIH
50%
VIL
tf
tr
DI
tcp
tcs
tch
VIH
VIL
tds
tdh
ILC00270
2. When CL is stopped at the high level
VIH
CE
VIL
tøL
tøH
VIH
50%
VIL
CL
tr
tf
tcp
tcs
tch
VIH
VIL
DI
tds
tdh
ILC00271
Figure 2
COMMON
DRIVER
SEGMENT DRIVER & LATCH
CLOCK
GENERATOR
SHIFT REGISTER
S1 / P1
S2 / P2
S3 / P3
S4 / P4
S5
S15
S16
COM1
COM2
COM3
COM4
Block Diagram
INH
OSC
VDD
VLCD
VLCD1
ADDRESS
DETECTOR
VLCD2
CE
CL
DI
VSS
ILC00272
No. 6792-4/14
LC75814V
Pin Functions
Pin
Pin No.
S1/P1 to
S4/P4
S5 to S16
1 to 4
Active
I/O
Handling
when unused
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.
—
O
Open
Common driver outputs.
The frame frequency fO is given by: fO = (fOSC/512) Hz.
—
O
Open
—
I/O
VDD
I
GND
Function
5 to 16
COM1
COM2
COM3
COM4
17 to 20
OSC
26
Oscillator connection
An oscillator circuit is formed by connecting an external resistor and capacitor to this pin.
CE
CL
DI
28
29
30
Serial data transfer inputs. These pins are
connected to the control microprocessor.
INH
27
Display off control input
•INH = low (VSS): Off
S1/P1 to S4/P4 = Low
(These pins are forcibly set to the segment output port function and
fixed at the VSS level.)
S5 to S16 = Low (VSS),
COM1 to COM4 = Low (VSS)
•INH = high (VDD): On
Note that serial data transfers can be performed when the
display is forced off by this pin.
L
I
GND
VLCD1
23
Used to apply the LCD drive 2/3 bias voltage externally. This pin must be connected to
VLCD2 when 1/2 bias drive is used.
—
I
Open
VLCD2
24
Used to apply the LCD drive 1/3 bias voltage externally. This pin must be connected to
VLCD1 when 1/2 bias drive is used.
—
I
Open
H
CE: Chip enable
CL: Synchronization clock
DI: Transfer data
—
VDD
21
Logic block power supply. Provide a voltage in the range 2.7 to 6.0 V.
—
—
—
VLCD
22
LCD driver block power supply. Provide a voltage in the range 2.7 to 6.0 V.
—
—
—
VSS
25
Ground pin. Connect to ground.
—
—
—
Serial Data Transfer Format
1. When CL is stopped at the low level
CE
CL
DI
1
1
1
1
0
0
1
0
D1
D2 D3
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 0
P0 P1 P2 DR SC BU 0
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bits
1
1
1
1
0
0
Display data
32 bits
1
0
D33 D34 D35
D53 D54 D55 D56 D57 D58 D59 D60 D61 D62 D63 D64 0
Control data
7 bits
0
0
0
0
DD
1 bit
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bits
Display data
32 bits
Fixed data
7 bits
DD
1 bit
ILC00273
Note: DD ... Direction data
No. 6792-5/14
LC75814V
2. When CL is stopped at the high level
CE
CL
DI
1
1
1
1
0
0
1
B0 B1 B2 B3 A0 A1 A2
0
D1 D2 D3
CCB address
8 bits
1
1
1
1
0
0
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 0
P0 P1 P2 DR SC BU 0
A3
Display data
32 bits
1
B0 B1 B2 B3 A0 A1 A2
0
D33 D34 D35
Control data
7 bits
D53 D54 D55 D56 D57 D58 D59 D60 D61 D62 D63 D64 0
0
0
0
0
DD
1 bit
0
0
1
A3
CCB address
8 bits
Display data
32 bits
Fixed data
7 bits
DD
1 bit
ILC00274
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
Serial Data Transfer Examples
• When 33 or more segments are used, all 80 bits of the serial data must be sent.
8 bits
1
1
1
1
0
40 bits
0
1
0
D1 D2 D3
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 0
D33 D34 D35
D53 D54 D55 D56 D57 D58 D59 D60 D61 D62 D63 D64 0
P0 P1 P2 DR SC BU
0
B0 B1 B2 B3 A0 A1 A2 A3
1
1
1
1
0
0
1
0
0
0
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
• 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.
8 bits
1
1
1
1
0
40 bits
0
1
0
D1 D2 D3
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 0
P0 P1 P2 DR SC BU
0
B0 B1 B2 B3 A0 A1 A2 A3
Note: When fewer than 33 segments are used, transfers such as that shown in the figure below cannot be used.
8 bits
1
1
1
1
0
40 bits
0
1
0
D33 D34 D35
D53 D54 D55 D56 D57 D58 D59 D60 D61 D62 D63 D64 0
0
0
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
ILC00275
No. 6792-6/14
LC75814V
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.
Control data
Output pin states
P0
P1
P2
S1/P1
S2/P2
S3/P3
0
0
0
S1
S2
S3
S4/P4
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
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.
Output pin
Corresponding display data
S1/P1
D1
S2/P2
D5
S3/P3
D9
S4/P4
D13
For example, if the output pin S4/P4 has the general-purpose output port function selected, it will output a high level
(VLCD) 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.
DR
Drive type
0
1/3 bias drive
1
1/2 bias drive
3. SC: Segments on/off control data
This control data bit controls the on/off state of the segments.
SC
Display state
0
On
1
Off
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.
BU
Mode
0
Normal mode
1
Power saving mode (The OSC pin oscillator is stopped, and the common and segment output pins go to the VSS level. However, the
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 generalpurpose output ports.)
No. 6792-7/14
LC75814V
Display Data to Segment Output Pin Correspondence
Segment
output pin
COM1
COM2
COM3
COM4
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
D48
S12
D45
D46
D47
S13
D49
D50
D51
D52
S14
D53
D54
D55
D56
S15
D57
D58
D59
D60
S16
D61
D62
D63
D64
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.
Display data
D41
D42
D43
D44
Segment output pin (S11) state
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.
No. 6792-8/14
LC75814V
1/4 Duty, 1/2 Bias Drive Technique
fOSC
[Hz]
512
VLCD
VLCD1, VLCD2
COM1
0V
VLCD
VLCD1, VLCD2
COM2
0V
VLCD
VLCD1, VLCD2
COM3
0V
VLCD
VLCD1, VLCD2
COM4
0V
LCD driver output when all LCD
segments corresponding to COM1,
COM2, COM3, and COM4 are turned off.
VLCD
VLCD1, VLCD2
LCD driver output when only LCD
segments corresponding to COM1 are
on.
VLCD
VLCD1, VLCD2
LCD driver output when only LCD
segments corresponding to COM2 are
on.
VLCD
VLCD1, VLCD2
LCD driver output when LCD segments
corresponding to COM1 and COM2 are
on.
VLCD
VLCD1, VLCD2
LCD driver output when only LCD
segments corresponding to COM3 are
on.
VLCD
VLCD1, VLCD2
LCD driver output when LCD segments
corresponding to COM1 and COM3 are
on.
VLCD
VLCD1, VLCD2
LCD driver output when LCD segments
corresponding to COM2 and COM3 are
on.
VLCD
VLCD1, VLCD2
LCD driver output when LCD segments
corresponding to COM1, COM2, and
COM3 are on.
VLCD
VLCD1, VLCD2
LCD driver output when only LCD
segments corresponding to COM4 are
on.
VLCD
VLCD1, VLCD2
LCD driver output when LCD segments
corresponding to COM2 and COM4 are
on.
VLCD
VLCD1, VLCD2
LCD driver output when all LCD
segments corresponding to COM1,
COM2, COM3, and COM4 are on.
VLCD
VLCD1, VLCD2
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
ILC00276
1/4 Duty, 1/2 Bias Waveforms
No. 6792-9/14
LC75814V
1/4 Duty, 1/3 Bias Drive Technique
fOSC
[Hz]
512
COM1
VLCD
VLCD1
VLCD2
0V
COM2
VLCD
VLCD1
VLCD2
0V
COM3
VLCD
VLCD1
VLCD2
0V
COM4
VLCD
VLCD1
VLCD2
0V
LCD driver output when all LCD
segments corresponding to COM1,
COM2, COM3, and COM4 are turned off.
VLCD
VLCD1
VLCD2
0V
LCD driver output when only LCD
segments corresponding to COM1 are
on.
VLCD
VLCD1
VLCD2
0V
LCD driver output when only LCD
segments corresponding to COM2 are
on.
VLCD
VLCD1
VLCD2
0V
LCD driver output when LCD segments
corresponding to COM1 and COM2 are
on.
VLCD
VLCD1
VLCD2
0V
LCD driver output when only LCD
segments corresponding to COM3 are
on.
VLCD
VLCD1
VLCD2
0V
LCD driver output when LCD segments
corresponding to COM1 and COM3 are
on.
VLCD
VLCD1
VLCD2
0V
LCD driver output when LCD segments
corresponding to COM2 and COM3 are
on.
VLCD
VLCD1
VLCD2
0V
LCD driver output when LCD segments
corresponding to COM1, COM2, and
COM3 are on.
VLCD
VLCD1
VLCD2
0V
LCD driver output when only LCD
segments corresponding to COM4 are
on.
VLCD
VLCD1
VLCD2
0V
LCD driver output when LCD segments
corresponding to COM2 and COM4 are
on.
VLCD
VLCD1
VLCD2
0V
LCD driver output when all LCD
segments corresponding to COM1,
COM2, COM3, and COM4 are on.
VLCD
VLCD1
VLCD2
0V
ILC00277
1/4 Duty, 1/3 Bias Waveforms
No. 6792-10/14
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 VSS level.) 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 (VLCD) on
• At power off: LCD driver block power supply (VLCD) 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.
t2
t1
t3
VDD
VLCD
INH
VIL
tc
CE
VIL
Display and control data transfer
Internal data
D1 to D32
P0 to P2
DR, SC, BU
Internal data (D33 to D64)
Undefined
Undefined
Defined
Undefined
Defined
Note: t1 ≥ 0
t2 > 0
t3 ≥ 0 (t2 > t3)
tc ... 10 µs min
Undefined
ILC00278
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.
No. 6792-11/14
LC75814V
Sample Application Circuit 1
1/2 Bias (for use with normal panels)
(P1)
(P2)
(P3)
*2
(P4)
General-purpose
output ports
Used for functions
such as backlight
control
OSC
+3V
COM1
VDD
COM2
COM3
VSS
LCD panel (up to 64 segments)
COM4
P1 / S1
+5V
P2 / S2
VLCD
P3 / S3
P4 / S4
VLCD1
S5
VLCD2
C ≥ 0.047 µF
C
INH
From the
microcontroller
CE
S14
CL
S15
DI
S16
ILC00279
Note: *2 When a capacitor except the recommended external capacitance (COSC = 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)
(P1)
(P2)
(P3)
*2
(P4)
General-purpose
output ports
Used for functions
such as backlight
control
OSC
+3V
VDD
COM1
COM2
COM3
COM4
P1 / S1
+5V
VLCD
P2 / S2
P3 / S3
R
VLCD1
P4 / S4
S5
10 kΩ ≥ R ≥ 1 kΩ
C ≥ 0.047 µF
VLCD2
C
R
LCD panel (up to 64 segments)
VSS
INH
From the
microcontroller
CE
S14
CL
S15
DI
S16
ILC00280
Note: *2 When a capacitor except the recommended external capacitance (COSC = 680 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200pF.
No. 6792-12/14
LC75814V
Sample Application Circuit 3
1/3 Bias (for use with normal panels)
(P1)
(P2)
(P3)
*2
(P4)
General-purpose
output ports
Used for functions
such as backlight
control
OSC
+3V
COM1
VDD
COM2
COM3
VSS
LCD panel (up to 64 segments)
COM4
P1 / S1
+5V
P2 / S2
VLCD
P3 / S3
P4 / S4
VLCD1
S5
VLCD2
C ≥ 0.047µF
C
C
INH
From the
microcontroller
CE
S14
CL
S15
DI
S16
ILC00281
Note: *2 When a capacitor except the recommended external capacitance (COSC = 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)
(P1)
(P2)
(P3)
*2
(P4)
General-purpose
output ports
Used for functions
such as backlight
control
OSC
+3V
VDD
COM1
COM2
COM3
COM4
P1 / S1
+5V
VLCD
VLCD1
P4 / S4
S5
R
10 kΩ ≥ R ≥ 1 kΩ
C ≥ 0.047 µF
P2 / S2
P3 / S3
R
VLCD2
C
C
R
LCD panel (up to 64 segments)
VSS
INH
From the
microcontroller
CE
S14
CL
S15
DI
S16
ILC00282
Note: *2 When a capacitor except the recommended external capacitance (COSC = 680 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200pF.
No. 6792-13/14
LC75814V
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.
This catalog provides information as of July, 2001. Specifications and information herein are subject to
change without notice.
PS No. 6792-14/14