SANYO LC75847T

Ordering number : ENN7389A
CMOS IC
LC75847T
1/3, 1/4 Duty General-Purpose LCD Driver
Overview
The LC75847T is 1/3 duty and 1/4 duty general-purpose
LCD driver that can be used for frequency display in
electronic tuners under the control of a microcontroller.
The LC75847T can drive an LCD with up to 420
segments directly. The LC75847T can also control up to
8 general-purpose output ports.
Features
• Switching between 1/3 duty and 1/4 duty drive
techniques under serial data control.
• Switching between 1/2 bias and 1/3 bias drive
techniques under serial data control.
• Up to 318 segments for 1/3 duty drive and 420 segments
for 1/4 duty drive can be displayed.
• 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.
• Serial data control of frame frequency for common and
segment output waveforms.
• High generality, since display data is displayed directly
without decoder intervention.
• Built-in display contrast adjustment circuit
• Independent VLCD for the LCD driver block
• The INH pin can force the display to the off state.
• RC oscillator circuit
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V
Parameter
Maximum supply voltage
Input voltage
Output voltage
Output current
Allowable power dissipation
Symbol
Conditions
Ratings
Unit
VDD max
VDD
–0.3 to +7.0
VLCD max
VLCD
–0.3 to +7.0
VIN1
CE, CL, DI, INH
VIN2
OSC
VIN3
VLCD1, VLCD2
–0.3 to +7.0
–0.3 to VDD + 0.3
VOUT1
OSC
VLCD0, S1 to S106, COM1 to COM4, P1 to P8
IOUT1
S1 to S106
IOUT2
COM1 to COM4
3
IOUT3
P1 to P8
5
Ta = 85°C
V
–0.3 to VLCD + 0.3
VOUT2
Pd max
V
–0.3 to VDD + 0.3
–0.3 to VLCD + 0.3
300
200
V
µA
mA
mW
Operating temperature
Topr
–40 to +85
°C
Storage temperature
Tstg
–55 to +125
°C
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is 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.
73004TN (OT) / 70703SI (OT) No. 7389-1/27
LC75847T
Allowable Operating Ranges at Ta = –40 to +85°C, VSS = 0 V
Parameter
Symbol
VDD
Supply voltage
Output voltage
Input voltage
VLCD
Conditions
Ratings
min
typ
max
VDD
2.7
6.0
VLCD, VLCD0 = 0.70 VLCD to 0.95 VLCD
4.0
6.0
VLCD, VLCD0 = VLCD
2.7
6.0
2.7
VLCD0
VLCD0
VLCD1
VLCD1
2/3 VLCD0
VLCD0
VLCD2
VLCD2
1/3 VLCD0
VLCD0
VLCD
Unit
V
V
V
Input high level voltage
VIH
CE, CL, DI, INH
0.8 VDD
6.0
V
Input low level voltage
VIL
CE, CL, DI, INH
0
0.2 VDD
V
Recommended external resistance
ROSC
OSC
39
Recommended external capacitance
COSC
OSC
1000
Guaranteed oscillation range
fOSC
OSC
19
38
kΩ
pF
76
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
ns
Rise time
tr
CE, CL, DI: Figure 2
160
ns
Fall time
tf
CE, CL, DI: Figure 2
160
ns
INH switching time
tc
INH, CE: Figure 3, Figure 4
10
µs
No. 7389-2/27
LC75847T
Electrical Characteristics for the allowable operating ranges
Parameter
Symbol
Conditions
Hysteresis
VH
CE, CL, DI, INH
Input high level current
IIH
CE, CL, DI, INH: VI = 6.0 V
Input low level current
Output high level voltage
Output low level voltage
Output middle level voltage*1
Oscillator frequency
Current drain
Ratings
min
typ
Unit
max
0.1 VDD
V
5.0
IIL
CE, CL, DI, INH: VI = 0 V
VOH1
S1 to S106: IO = –20 µA
VLCD0 – 0.9
VOH2
COM1 to COM4: IO = –100 µA
VLCD0 – 0.9
VOH3
P1 to P8: IO = –1 mA
VLCD – 0.9
–5.0
µA
V
VOL1
S1 to S106: IO = 20 µA
0.9
VOL2
COM1 to COM4: IO = 100 µA
0.9
VOL3
P1 to P8: IO = 1 mA
0.9
VMID1
COM1 to COM4: 1/2 bias, IO = ±100 µA
1/2 VLCD0
– 0.9
1/2 VLCD0
+ 0.9
VMID2
S1 to S106: 1/3 bias, IO = ±20 µA
2/3 VLCD0
– 0.9
2/3 VLCD0
+ 0.9
VMID3
S1 to S106: 1/3 bias, IO = ±20 µA
1/3 VLCD0
– 0.9
1/3 VLCD0
+ 0.9
VMID4
COM1 to COM4: 1/3 bias, IO = ±100 µA
2/3 VLCD0
– 0.9
2/3 VLCD0
+ 0.9
VMID5
COM1 to COM4: 1/3 bias, IO = ±100 µA
1/3 VLCD0
– 0.9
1/3 VLCD0
+ 0.9
fOSC
OSC: ROSC = 39 kΩ, COSC = 1000 pF
IDD1
VDD: Power-saving mode
30.4
µA
38
45.6
V
V
kHz
5
IDD2
VDD: VDD = 6.0 V, output open, fOSC = 38 kHz
ILCD1
VLCD: Power-saving mode
ILCD2
VLCD: VLCD = 6.0 V, output open, 1/2 bias, fOSC = 38 kHz,
VLCD0 = 0.70 VLCD to 0.95 VLCD
400
800
ILCD3
VLCD: VLCD = 6.0 V, output open, 1/2 bias, fOSC = 38 kHz,
VLCD0 = VLCD
350
700
ILCD4
VLCD: VLCD = 6.0 V, output open, 1/3 bias, fOSC = 38 kHz,
VLCD0 = 0.70 VLCD to 0.95 VLCD
300
600
ILCD5
VLCD: VLCD = 6.0 V, output open, 1/3 bias, fOSC = 38 kHz,
VLCD0 = VLCD
250
500
250
500
5
µA
Note: *1 Excluding the bias voltage generation divider resistors built in the VLCD0, VLCD1, VLCD2, and VSS. (See Figure 1.)
VLCD
CONTRAST
ADJUSTER
VLCD0
VLCD1
VLCD2
To the common segment drivers
VSS
Except these resistors
Figure 1
No. 7389-3/27
LC75847T
1. When CL is stopped at the low level
VIH
CE
VIL
tøH
CL
tøL
VIH
50%
VIL
tr
tf
tcp
tcs
tch
VIH
DI
VIL
tds
tdh
2. When CL is stopped at the high level
VIH
VIL
CE
tøL
tøH
VIH
50%
VIL
CL
tf
tr
tcp
tcs
tch
VIH
DI
VIL
tds
tdh
Figure 2
OSC
COMMON
DRIVER
SEGMENT DRIVER & LATCH
CLOCK
GENERATOR
SHIFT REGISTER
S2/P2
S1/P1
S8/P8
S9
S105
S104
COM1
COM2
COM3
COM4/S106
Block Diagram
VDD
VLCD
CONTRAST
ADJUSTER
VLCD0
ADDRESS
DETECTOR
VLCD1
VLCD2
CE
CL
DI
INH
VSS
No. 7389-4/27
LC75847T
Pin Functions
Pin No.
Function
Active
I/O
Handling
when unused
S1/P1 to S8/P8
1 to 8
S9 to S105
9 to 105
Segment outputs for displaying the display data transferred by serial data input. The
pins S1/P1 to S8/P8 can be used as general-purpose output ports when so set up by
the control data.
—
O
Open
COM1 to COM3
109 to 107
COM4/S106
106
—
O
Open
OSC
116
An oscillator circuit is formed by connecting an external resistor and capacitor to this
pin.
—
I/O
VDD
CE
118
Serial data transfer inputs. These pins are connected to the control microprocessor.
H
I
CL
119
DI
120
CE: Chip enable
CL: Synchronization clock
DI: Transfer data
Symbol
Common driver outputs.
The frame frequency is fO Hz.
The COM4/S106 pin can be used as a segment output in 1/3 duty.
Oscillator connection.
I
GND
—
I
L
I
GND
—
O
Open
Display off control input
INH
117
• INH = low (VSS) ....Off
S1/P1 to S8/P8 = low (VSS)
(These pins are forcibly set to the segment output port function
and fixed at the VSS level.)
S9 to S105 = low (VSS)
COM1 to COM3 = low (VSS)
COM4/S106 = low (VSS)
• INH = high (VDD) ..On
Note that serial data transfers can be performed when the display is forced off by this
pin.
VLCD0
112
LCD drive 3/3 bias voltage (high level) supply. This level can be modified using the
display contrast adjustment circuit. However, note that VLCD0 must be greater than or
equal to 2.7 V. Also, since this IC provides the built-in display contrast adjustment
circuit, applications must not attempt to provide this level from external circuits.
VLCD1
113
LCD drive 2/3 bias voltage (middle level) supply. It is possible to supply the 2/3 VLCD0
voltage to this pin externally. This pin must be shorted to VLCD2 if 1/2 bias is used.
—
I
Open
VLCD2
114
LCD drive 1/3 bias voltage (middle level) supply. It is possible to supply the 1/3 VLCD0
voltage to this pin externally. This pin must be shorted to VLCD1 if 1/2 bias is used.
—
I
Open
VDD
110
Logic block power supply. Provide a voltage in the range 2.7 to 6.0 V.
—
—
—
VLCD
111
LCD driver block power supply. When VLCD0 is between 0.70 VLCD and 0.95 VLCD,
supply a voltage in the range 4.0 to 6.0 V. When VLCD0 and VLCD will be equal, supply
a voltage in the range 2.7 to 6.0 V.
—
—
—
VSS
115
Ground pin. Connect to ground.
—
—
—
No. 7389-5/27
LC75847T
S90
S89
S88
S87
S86
S85
S84
S83
S82
S81
S80
S79
S78
S77
S76
S75
S74
S73
S72
S71
S70
S69
S68
S67
S66
S65
S64
S63
S62
S61
Pin Assignment
90
61
91
60
S91
S92
S93
S94
S95
S96
S97
S98
S99
S100
S101
S102
S103
S104
S105
S106/COM4
COM3
COM2
COM1
VDD
VLCD
VLCD0
VLCD1
VLCD2
VSS
OSC
INH
CE
CL
DI
S60
S59
S58
S57
S56
S55
S54
S53
S52
S51
S50
S49
S48
S47
S46
S45
S44
S43
S42
S41
S40
S39
S38
S37
S36
S35
S34
S33
S32
S31
LC75847T
(TQFP120)
120
31
30
P1/S1
P2/S2
P3/S3
P4/S4
P5/S5
P6/S6
P7/S7
P8/S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
1
No. 7389-6/27
LC75847T
Serial Data Transfer Format
1. 1/3 duty
① When CL is stopped at the low level
CE
CL
DI
1 0 1 0 0 0 0 1 D1
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bits
D104 D105 D106 D107 D108 0
Display data
108 bits
0 0 0 0 0 P0 P1 P2 P3 CT0 CT1 CT2 DR DT FC SC BU 0 0
Control data
18 bits
DD
2 bits
D212 D213 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
1 0 1 0 0 0 0 1 D109
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
Display data
Fixed data
DD
8 bits
105 bits
21 bits
2 bits
D317 D318 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
1 0 1 0 0 0 0 1 D214
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
Display data
Fixed data
DD
8 bits
105 bits
21 bits
2 bits
Note: DD···Direction data.
No. 7389-7/27
LC75847T
② When CL is stopped at the high level
CE
CL
DI
1 0 1 0 0 0 0 1 D1
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bits
D104 D105 D106 D107 D108 0
Display data
108 bits
0 0 0 0 0 P0 P1 P2 P3 CT0 CT1 CT2 DR DT FC SC BU 0 0
Control data
18 bits
DD
2 bits
1 0 1 0 0 0 0 1 D109
D212 D213 0 0 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
Display data
Fixed data
DD
8 bits
105 bits
21 bits
2 bits
D317 D318 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
1 0 1 0 0 0 0 1 D214
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
Display data
Fixed data
DD
8 bits
105 bits
21 bits
2 bits
Note: DD···Direction data.
•
•
•
•
•
•
•
•
•
CCB address......85H
D1 to D318........Display data
P0 to P3 .............Segment output port/general-purpose output port switching control data
CT0 to CT2 .......Control data that sets the display contrast
DR .....................1/2 bias drive or 1/3 bias drive switching control data
DT .....................1/3 duty drive or 1/4 duty drive switching control data
FC......................Common and segment output waveforms frame frequency setting control data
SC......................Segments on/off control data
BU .....................Normal mode/power-saving mode control data
No. 7389-8/27
LC75847T
2. 1/4 duty
① When CL is stopped at the low level
CE
CL
DI
1 0 1 0 0 0 0 1 D1
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bits
D104 D105 D106 D107 D108 0
Display data
108 bits
0 0 0 0 0 P0 P1 P2 P3 CT0 CT1 CT2 DR DT FC SC BU 0 0
Control data
18 bits
DD
2 bits
D212 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
1 0 1 0 0 0 0 1 D109
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
Display data
Fixed data
DD
8 bits
104 bits
22 bits
2 bits
1 0 1 0 0 0 0 1 D213
D316 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
Display data
Fixed data
DD
8 bits
104 bits
22 bits
2 bits
D420 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
1 0 1 0 0 0 0 1 D317
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
Display data
Fixed data
DD
8 bits
104 bits
22 bits
2 bits
Note: DD···Direction data.
No. 7389-9/27
LC75847T
② When CL is stopped at the high level
CE
CL
DI
1 0 1 0 0 0 0 1 D1
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bits
D104 D105 D106 D107 D108 0
Display data
108 bits
0 0 0 0 0 P0 P1 P2 P3 CT0 CT1 CT2 DR DT FC SC BU 0 0
Control data
18 bits
DD
2 bits
1 0 1 0 0 0 0 1 D109
D212 0 0 0 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
Display data
Fixed data
DD
8 bits
104 bits
22 bits
2 bits
1 0 1 0 0 0 0 1 D213
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
8 bits
D316 0
Display data
104 bits
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
Fixed data
22 bits
DD
2 bits
D420 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
1 0 1 0 0 0 0 1 D317
B0 B1 B2 B3 A0 A1 A2 A3
CCB address
Display data
Fixed data
DD
8 bits
104 bits
22 bits
2 bits
Note: DD···Direction data.
•
•
•
•
•
•
•
•
•
CCB address......85H
D1 to D420........Display data
P0 to P3 .............Segment output port/general-purpose output port switching control data
CT0 to CT2 .......Control data that sets the display contrast
DR .....................1/2 bias drive or 1/3 bias drive switching control data
DT .....................1/3 duty drive or 1/4 duty drive switching control data
FC......................Common and segment output waveforms frame frequency setting control data
SC......................Segments on/off control data
BU .....................Normal mode/power-saving mode control data
No. 7389-10/27
LC75847T
Serial Data Transfer Example
1. 1/3 duty
① When 214 or more segments are used
All 384 bits of serial data must be sent.
8 bits
1
0
1
0
128 bits
0
0
0
1
D1
D104 D105 D106 D107 D108 0
0
0
0
0
0 P0 P1 P2 P3 CT0 CT1 CT2 DR DT FC SC BU 0
0
D109
D212 D213 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
D214
D317 D318 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
B0 B1 B2 B3 A0 A1 A2 A3
1
0
1
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
1
0
1
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
② When fewer than 214 segments are used
Either 128 or 256 bits of serial data may be sent, depending on the number of segments used. However, the serial data
shown below (the D1 to D108 display data and the control data) must be sent.
8 bits
1
0
1
0
0
128 bits
0
0
1
D1
D104 D105 D106 D107 D108 0
0
0
0
0
0 P0 P1 P2 P3 CT0 CT1 CT2 DR DT FC SC BU 0
0
B0 B1 B2 B3 A0 A1 A2 A3
2. 1/4 duty
① When 317 or more segments are used
All 512 bits of serial data must be sent.
8 bits
1
0
1
0
128 bits
0
0
0
1
D1
D104 D105 D106 D107 D108 0
0
0
0
0
0 P0 P1 P2 P3 CT0 CT1 CT2 DR DT FC SC BU 0
0
D109
D212 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
D213
D316 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
D317
D420 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
B0 B1 B2 B3 A0 A1 A2 A3
1
0
1
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
1
0
1
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
1
0
1
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
② When fewer than 317 segments are used
Either 128, 256 or 384 bits of serial data may be sent, depending on the number of segments used. However, the serial
data shown below (the D1 to D108 display data and the control data) must be sent.
8 bits
1
0
1
0
0
128 bits
0
0
1
D1
D104 D105 D106 D107 D108 0
0
0
0
0
0 P0 P1 P2 P3 CT0 CT1 CT2 DR DT FC SC BU 0
0
B0 B1 B2 B3 A0 A1 A2 A3
No. 7389-11/27
LC75847T
Control Data Functions
1. P0 to P3: Segment output port/general-purpose output port switching control data.
These control data bits switch the S1/P1 to S8/P8 output pins between their segment output port and generalpurpose output port functions.
Control data
Output pin state
P0
P1
P2
P3
S1/P1
S2/P2
S3/P3
S4/P4
S5/P5
S6/P6
S7/P7
S8/P8
0
0
0
0
S1
S2
S3
S4
S5
S6
S7
S8
0
0
0
1
P1
S2
S3
S4
S5
S6
S7
S8
0
0
1
0
P1
P2
S3
S4
S5
S6
S7
S8
0
0
1
1
P1
P2
P3
S4
S5
S6
S7
S8
0
1
0
0
P1
P2
P3
P4
S5
S6
S7
S8
0
1
0
1
P1
P2
P3
P4
P5
S6
S7
S8
0
1
1
0
P1
P2
P3
P4
P5
P6
S7
S8
0
1
1
1
P1
P2
P3
P4
P5
P6
P7
S8
1
0
0
0
P1
P2
P3
P4
P5
P6
P7
P8
Note: Sn (n = 1 to 8): Segment output ports
Pn (n = 1 to 8): 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.
Corresponding display data
Output pin
1/3 duty
1/4 duty
S1/P1
D1
D1
S2/P2
D4
D5
S3/P3
D7
D9
S4/P4
D10
D13
S5/P5
D13
D17
S6/P6
D16
D21
S7/P7
D19
D25
S8/P8
D22
D29
For example, when 1/4 duty drive scheme is used, if the general-purpose output port function is selected for the
S4/P4 output pin, that output pin will output a high level (VLCD) when the display data D13 is 1, and a low level
(VSS) when the D13 is 0.
2. CT0 to CT2: Control data that sets the display contrast
This control data is used to set the display contrast.
CT0 to CT2: Display contrast setting (7 steps)
CT0
CT1
CT2
0
0
0
1.00 VLCD = VLCD – (0.05 VLCD × 0)
LCD drive 3/3 bias voltage power supply (VLCD0) level
1
0
0
0.95 VLCD = VLCD – (0.05 VLCD × 1)
0
1
0
0.90 VLCD = VLCD – (0.05 VLCD × 2)
1
1
0
0.85 VLCD = VLCD – (0.05 VLCD × 3)
0
0
1
0.80 VLCD = VLCD – (0.05 VLCD × 4)
1
0
1
0.75 VLCD = VLCD – (0.05 VLCD × 5)
0
1
1
0.70 VLCD = VLCD – (0.05 VLCD × 6)
Note that although the display contrast can be adjusted by operating the built-in display contrast adjustment circuit, it
is also possible to adjust the contrast by varying the voltage level on the LCD drive block power supply VLCD pin.
However, VLCD0 must always be greater than or equal to 2.7 V.
No. 7389-12/27
LC75847T
3. 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
Bias drive scheme
0
1/3 bias drive
1
1/2 bias drive
4. DT: 1/3 duty drive or 1/4 duty drive switching control data
This control data bit selects either 1/3 duty drive or 1/4 duty drive.
DT
Duty drive scheme
Output pin state (COM4/S106)
0
1/4 duty drive
COM4
1
1/3 duty drive
S106
Note: COM4: Common output
S106: Segment output
5. FC: Common and segment output waveforms frame frequency setting control data
This control data bit sets the frame frequency for common and segment output waveforms.
FC
Frame frequency f0 [Hz]
0
fosc
———
384
1
fosc
———
192
6. 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.
7. BU: Normal mode/power-saving mode control data
This control data bit selects either normal mode or power-saving mode.
BU
0
1
Mode
Normal mode
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 S8/P8 output pins that are set to be general-purpose output ports by the control data P0 to P3 can be used as
general-purpose output ports.)
No. 7389-13/27
LC75847T
Display Data to Segment Output Pin Correspondence
1. 1/3 duty
Segment
Output pin
COM1
COM2
COM3
Segment
Output pin
COM1
COM2
COM3
Segment
Output pin
COM1
COM2
COM3
S1/P1
D1
D2
D3
S37
D109
D110
D111
S73
D217
D218
D219
S2/P2
D4
D5
D6
S38
D112
D113
D114
S74
D220
D221
D222
S3/P3
D7
D8
D9
S39
D115
D116
D117
S75
D223
D224
D225
S4/P4
D10
D11
D12
S40
D118
D119
D120
S76
D226
D227
D228
S5/P5
D13
D14
D15
S41
D121
D122
D123
S77
D229
D230
D231
S6/P6
D16
D17
D18
S42
D124
D125
D126
S78
D232
D233
D234
S7/P7
D19
D20
D21
S43
D127
D128
D129
S79
D235
D236
D237
S8/P8
D22
D23
D24
S44
D130
D131
D132
S80
D238
D239
D240
S9
D25
D26
D27
S45
D133
D134
D135
S81
D241
D242
D243
S10
D28
D29
D30
S46
D136
D137
D138
S82
D244
D245
D246
S11
D31
D32
D33
S47
D139
D140
D141
S83
D247
D248
D249
S12
D34
D35
D36
S48
D142
D143
D144
S84
D250
D251
D252
S13
D37
D38
D39
S49
D145
D146
D147
S85
D253
D254
D255
S14
D40
D41
D42
S50
D148
D149
D150
S86
D256
D257
D258
S15
D43
D44
D45
S51
D151
D152
D153
S87
D259
D260
D261
S16
D46
D47
D48
S52
D154
D155
D156
S88
D262
D263
D264
S17
D49
D50
D51
S53
D157
D158
D159
S89
D265
D266
D267
S18
D52
D53
D54
S54
D160
D161
D162
S90
D268
D269
D270
S19
D55
D56
D57
S55
D163
D164
D165
S91
D271
D272
D273
S20
D58
D59
D60
S56
D166
D167
D168
S92
D274
D275
D276
D279
S21
D61
D62
D63
S57
D169
D170
D171
S93
D277
D278
S22
D64
D65
D66
S58
D172
D173
D174
S94
D280
D281
D282
S23
D67
D68
D69
S59
D175
D176
D177
S95
D283
D284
D285
S24
D70
D71
D72
S60
D178
D179
D180
S96
D286
D287
D288
S25
D73
D74
D75
S61
D181
D182
D183
S97
D289
D290
D291
S26
D76
D77
D78
S62
D184
D185
D186
S98
D292
D293
D294
S27
D79
D80
D81
S63
D187
D188
D189
S99
D295
D296
D297
S28
D82
D83
D84
S64
D190
D191
D192
S100
D298
D299
D300
S29
D85
D86
D87
S65
D193
D194
D195
S101
D301
D302
D303
S30
D88
D89
D90
S66
D196
D197
D198
S102
D304
D305
D306
S31
D91
D92
D93
S67
D199
D200
D201
S103
D307
D308
D309
S32
D94
D95
D96
S68
D202
D203
D204
S104
D310
D311
D312
S33
D97
D98
D99
S69
D205
D206
D207
S105
D313
D314
D315
COM4/S106
D316
D317
D318
S34
D100
D101
D102
S70
D208
D209
D210
S35
D103
D104
D105
S71
D211
D212
D213
S36
D106
D107
D108
S72
D214
D215
D216
Note: This applies to the case where the S1/P1 to S8/P8, and COM4/S106 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
Segment output pin (S11) state
D31
D32
D33
0
0
0
The LCD segments corresponding to COM1, COM2, and COM3 are off.
0
0
1
The LCD segment corresponding to COM3 is on.
0
1
0
The LCD segment corresponding to COM2 is on.
0
1
1
The LCD segments corresponding to COM2 and COM3 are on.
1
0
0
The LCD segment corresponding to COM1 is on.
1
0
1
The LCD segments corresponding to COM1 and COM3 are on.
1
1
0
The LCD segments corresponding to COM1 and COM2 are on.
1
1
1
The LCD segments corresponding to COM1, COM2, and COM3 are on.
No. 7389-14/27
LC75847T
2. 1/4 duty
Segment
Output pin
COM3
COM4
Segment
Output pin
COM1
COM2
S1/P1
D1
D2
D3
D4
S54
D213
D214
D215
D216
S2/P2
D5
D6
D7
D8
S55
D217
D218
D219
D220
COM1
COM2
COM3
COM4
S3/P3
D9
D10
D11
D12
S56
D221
D222
D223
D224
S4/P4
D13
D14
D15
D16
S57
D225
D226
D227
D228
S5/P5
D17
D18
D19
D20
S58
D229
D230
D231
D232
S6/P6
D21
D22
D23
D24
S59
D233
D234
D235
D236
S7/P7
D25
D26
D27
D28
S60
D237
D238
D239
D240
S8/P8
D29
D30
D31
D32
S61
D241
D242
D243
D244
S9
D33
D34
D35
D36
S62
D245
D246
D247
D248
S10
D37
D38
D39
D40
S63
D249
D250
D251
D252
S11
D41
D42
D43
D44
S64
D253
D254
D255
D256
S12
D45
D46
D47
D48
S65
D257
D258
D259
D260
S13
D49
D50
D51
D52
S66
D261
D262
D263
D264
S14
D53
D54
D55
D56
S67
D265
D266
S267
D268
S15
D57
D58
D59
D60
S68
D269
D270
D271
D272
S16
D61
D62
D63
D64
S69
D273
D274
D275
D276
S17
D65
D66
D67
D68
S70
D277
D278
D279
D280
S18
D69
D70
D71
D72
S71
D281
D282
D283
D284
S19
D73
D74
D75
D76
S72
D285
D286
D287
D288
S20
D77
D78
D79
D80
S73
D289
D290
D291
D292
S21
D81
D82
D83
D84
S74
D293
D294
D295
D296
S22
D85
D86
D87
D88
S75
D297
D298
D299
D300
S23
D89
D90
D91
D92
S76
D301
D302
D303
D304
S24
D93
D94
D95
D96
S77
D305
D306
D307
D308
S25
D97
D98
D99
D100
S78
D309
D310
D311
D312
S26
D101
D102
D103
D104
S79
D313
D314
D315
D316
S27
D105
D106
D107
D108
S80
D317
D318
D319
D320
S28
D109
D110
D111
D112
S81
D321
D322
D323
D324
S29
D113
D114
D115
D116
S82
D325
D326
D327
D328
S30
D117
D118
D119
D120
S83
D329
D330
D331
D332
S31
D121
D122
D123
D124
S84
D333
D334
D335
D336
S32
D125
D126
D127
D128
S85
D337
D338
D339
D340
S33
D129
D130
D131
D132
S86
D341
D342
D343
D344
S34
D133
D134
D135
D136
S87
D345
D346
D347
D348
S35
D137
D138
D139
D140
S88
D349
D350
D351
D352
S36
D141
D142
D143
D144
S89
D353
D354
D355
D356
S37
D145
D146
D147
D148
S90
D357
D358
D359
D360
S38
D149
D150
D151
D152
S91
D361
D362
D363
D364
S39
D153
D154
D155
D156
S92
D365
D366
D367
D368
S40
D157
D158
D159
D160
S93
D369
D370
D371
D372
S41
D161
D162
D163
D164
S94
D373
D374
D375
D376
S42
D165
D166
D167
D168
S95
D377
D378
D379
D380
S43
D169
D170
D171
D172
S96
D381
D382
D383
D384
S44
D173
D174
D175
D176
S97
D385
D386
D387
D388
S45
D177
D178
D179
D180
S98
D389
D390
D391
D392
S46
D181
D182
D183
D184
S99
D393
D394
D395
D396
S47
D185
D186
D187
D188
S100
D397
D398
D399
D400
S48
D189
D190
D191
D192
S101
D401
D402
D403
D404
S49
D193
D194
D195
D196
S102
D405
D406
D407
D408
S50
D197
D198
D199
D200
S103
D409
D410
D411
D412
S51
D201
D202
D203
D204
S104
D413
D414
D415
D416
S52
D205
D206
D207
D208
S105
D417
D418
D419
D420
S53
D209
D210
D211
D212
Note: This applies to the case where the S1/P1 to S8/P8 output pins are set to be segment output ports.
No. 7389-15/27
LC75847T
For example, the table below lists the segment output states for the S11 output pin.
Display data
Segment output pin (S11) state
D41
D42
D43
D44
0
0
0
0
The LCD segments corresponding to COM1, COM2, COM3, and 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, COM2, and COM3 are on.
1
1
1
1
The LCD segments corresponding to COM1, COM2, COM3, and COM4 are on.
No. 7389-16/27
LC75847T
1/3 Duty, 1/2 Bias Drive Technique
fo[Hz]
COM1
VLCD0
VLCD1, VLCD2
0V
COM2
VLCD0
VLCD1, VLCD2
0V
COM3
VLCD0
VLCD1, VLCD2
0V
LCD driver output when all LCD segments
corresponding to COM1, COM2, and COM3
are turned off.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when only LCD segments
corresponding to COM1 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when only LCD segments
corresponding to COM2 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when LCD segments
corresponding to COM1 and COM2 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when only LCD segments
corresponding to COM3 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when LCD segments
corresponding to COM1 and COM3 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when LCD segments
corresponding to COM2 and COM3 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when all LCD segments
corresponding to COM1, COM2,
and COM3 are on.
VLCD0
VLCD1, VLCD2
0V
When the control data FC = 0 : f0 =
When the control data FC = 1 : f0 =
fosc
384
fosc
192
No. 7389-17/27
LC75847T
1/3 Duty, 1/3 Bias Drive Technique
fo[Hz]
COM1
VLCD0
VLCD1
VLCD2
0V
COM2
VLCD0
VLCD1
VLCD2
0V
COM3
VLCD0
VLCD1
VLCD2
0V
LCD driver output when all LCD segments
corresponding to COM1, COM2, and COM3
are turned off.
VLCD0
VLCD1
VLCD2
0V
LCD driver output when only LCD segments
corresponding to COM1 are on.
VLCD0
VLCD1
VLCD2
0V
LCD driver output when only LCD segments
corresponding to COM2 are on.
VLCD0
VLCD1
VLCD2
0V
LCD driver output when LCD segments
corresponding to COM1 and COM2 are on.
VLCD0
VLCD1
VLCD2
0V
LCD driver output when only LCD segments
corresponding to COM3 are on.
VLCD0
VLCD1
VLCD2
0V
LCD driver output when LCD segments
corresponding to COM1 and COM3 are on.
VLCD0
VLCD1
VLCD2
0V
LCD driver output when LCD segments
corresponding to COM2 and COM3 are on.
VLCD0
VLCD1
VLCD2
0V
LCD driver output when all LCD segments
corresponding to COM1, COM2,
and COM3 are on.
VLCD0
VLCD1
VLCD2
0V
When the control data FC = 0 : f0 =
When the control data FC = 1 : f0 =
fosc
384
fosc
192
No. 7389-18/27
LC75847T
1/4 Duty, 1/2 Bias Drive Technique
fo[Hz]
COM1
VLCD0
VLCD1, VLCD2
0V
COM2
VLCD0
VLCD1, VLCD2
0V
COM3
VLCD0
VLCD1, VLCD2
0V
COM4
VLCD0
VLCD1, VLCD2
0V
LCD driver output when all LCD segments
corresponding to COM1, COM2, COM3,
and COM4 are turned off.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when only LCD segments
corresponding to COM1 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when only LCD segments
corresponding to COM2 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when LCD segments
corresponding to COM1 and COM2 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when only LCD segments
corresponding to COM3 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when LCD segments
corresponding to COM1 and COM3 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when LCD segments
corresponding to COM2 and COM3 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when LCD segments
corresponding to COM1, COM2, and COM3 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when only LCD segments
corresponding to COM4 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when LCD segments
corresponding to COM2 and COM4 are on.
VLCD0
VLCD1, VLCD2
0V
LCD driver output when all LCD segments
corresponding to COM1, COM2, COM3,
and COM4 are on.
VLCD0
VLCD1, VLCD2
0V
When the control data FC = 0 : f0 =
When the control data FC = 1 : f0 =
fosc
384
fosc
192
No. 7389-19/27
LC75847T
1/4 Duty, 1/3 Bias Drive Technique
fo[Hz]
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
VLCD0
VLCD1
VLCD2
0V
COM1
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 only LCD segments
corresponding to COM3 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 only LCD segments
corresponding to COM4 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.
When the control data FC = 0 : f0 =
When the control data FC = 1 : f0 =
fosc
384
fosc
192
No. 7389-20/27
LC75847T
The INH pin and Display Control
Since the IC internal data (1/3 duty: the display data D1 to D318 and the control data, 1/4 duty: the display data D1 to
D420 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 S8/P8, S9 to S105, COM1 to COM3, and
COM4/S106 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
Figures 3 and 4.)
Notes on the Power On/Off Sequences
Applications should observe the following sequences when turning the LC75847T 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.
• 1/3 duty
t2
t1
t3
VDD
VLCD
INH
VIL
tc
CE
VIL
Display and control data transfer
D1 to D108,
Internal data P0 to P3, CT0 to CT2,
DR, DT, FC, SC, BU
Undefined
Defined
Undefined
Internal data (D109 to D213)
Undefined
Defined
Undefined
Internal data (D214 to D318)
Undefined
Defined
Undefined
Notes:
t1 ≥ 0
t2 > 0
t3 ≥ 0 (t2 > t3)
tc .......10µs min.
Figure 3
No. 7389-21/27
LC75847T
• 1/4 duty
t2
t1
t3
VDD
VLCD
INH
VIL
tc
CE
VIL
Display and control data transfer
D1 to D108
Internal data P0 to P3, CT0 to CT2,
DR, DT, FC, SC, BU
Undefined
Defined
Undefined
Internal data (D109 to D212)
Undefined
Defined
Undefined
Internal data (D213 to D316)
Undefined
Defined
Undefined
Internal data (D317 to D420)
Undefined
Defined
Undefined
Notes:
t1 ≥ 0
t2 > 0
t3 ≥ 0 (t2 > t3)
tc .......10µs min.
Figure 4
Notes on Controller Transfer of Display Data
Since the LC75847T accepts the display data (D1 to D318) divided into three separate transfer operations when using
1/3 duty drive scheme and the data (D1 to D420) divided into four separate transfer operations when 1/4 duty drive, 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. 7389-22/27
LC75847T
Sample Application Circuit 1
1/3 Duty, 1/2 Bias (for use with normal panels)
(P1)
*2
(P2)
General-purpose
output ports
(P8)
Used for functions
such as backlight
control
OSC
VDD
COM1
COM2
COM3
P1/S1
P2/S2
VSS
+5.8 V
Open
LCD panel (up to 318 segments)
+3.0 V
VLCD
VLCD0
VLCD1
P8/S8
S9
VLCD2
C
C ≥ 0.047µF
INH
CE
CL
From the
controller
S104
S105
DI
COM4/S106
Note: *2 When a capacitor except the recommended external capacitance (Cosc = 1000 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200 pF.
Sample Application Circuit 2
1/3 Duty, 1/2 Bias (for use with large panels)
(P1)
*2
(P2)
General-purpose
output ports
(P8)
Used for functions
such as backlight
control
VDD
COM1
COM2
VSS
COM3
P1/S1
P2/S2
VLCD
+5.8 V
VLCD0
R
VLCD1
P8/S8
10 kΩ ≥ R ≥ 2.2 kΩ
C ≥ 0.047 µF
From the
controller
C
R
VLCD2
INH
CE
CL
DI
S9
LCD panel (up to 318 segments)
OSC
+3.0 V
S104
S105
COM4/S106
Note: *2 When a capacitor except the recommended external capacitance (Cosc = 1000 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200 pF.
No. 7389-23/27
LC75847T
Sample Application Circuit 3
1/3 Duty, 1/3 Bias (for use with nornal panels)
(P1)
*2
(P2)
General-purpose
output ports
(P8)
Used for functions
such as backlight
control
+5.8 V
Open
VDD
COM1
COM2
VSS
COM3
P1/S1
P2/S2
LCD panel (up to 318 segments)
OSC
+3.0 V
VLCD
VLCD0
VLCD1
P8/S8
S9
VLCD2
C ≥ 0.047 µF
C
C
INH
CE
From the
controller
S104
CL
DI
S105
COM4/S106
Note: *2 When a capacitor except the recommended external capacitance (Cosc = 1000 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200 pF.
Sample Application Circuit 4
1/3 Duty, 1/3 Bias (for use with large panels)
(P1)
*2
(P2)
General-purpose
output ports
(P8)
Used for functions
such as backlight
control
VSS
VLCD
+5.8 V
COM1
COM2
COM3
P1/S1
P2/S2
VLCD0
R
VLCD1
R
10 kΩ ≥ R ≥ 2.2 kΩ
C ≥ 0.047 µF
From the
controller
P8/S8
VLCD2
C
C
S9
R
INH
CE
CL
DI
LCD panel (up to 318 segments)
OSC
VDD
+3.0 V
S104
S105
COM4/S106
Note: *2 When a capacitor except the recommended external capacitance (Cosc = 1000 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200 pF.
No. 7389-24/27
LC75847T
Sample Application Circuit 5
1/4 Duty, 1/2 Bias (for use with normal panels)
(P1)
*2
(P2)
General-purpose
output ports
(P8)
Used for functions
such as backlight
control
OSC
COM1
COM2
COM3
VSS
+5.8 V
Open
LCD panel (up to 420 segments)
VDD
+3.0 V
S106/COM4
P1/S1
P2/S2
VLCD
VLCD0
VLCD1
P8/S8
VLCD2
S9
C
C ≥ 0.047 µF
INH
CE
From the
controller
S104
CL
DI
S105
Note: *2 When a capacitor except the recommended external capacitance (Cosc = 1000 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200 pF.
Sample Application Circuit 6
1/4 Duty, 1/2 Bias (for use with large panels)
(P1)
*2
(P2)
General-purpose
output ports
(P8)
Used for functions
such as backlight
control
VSS
VLCD
+5.8 V
VLCD0
R
10 kΩ ≥ R ≥ 2.2 kΩ
C ≥ 0.047 µF
C
R
COM1
COM2
COM3
S106/COM4
P1/S1
P2/S2
VLCD1
VLCD2
P8/S8
S9
INH
From the
controller
CE
CL
DI
LCD panel (up to 420 segments)
OSC
VDD
+3.0 V
S104
S105
Note: *2 When a capacitor except the recommended external capacitance (Cosc = 1000 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200 pF.
No. 7389-25/27
LC75847T
Sample Application Circuit 7
1/4 Duty, 1/3 Bias (for use with nornal panels)
(P1)
*2
(P2)
General-purpose
output ports
(P8)
Used for functions
such as backlight
control
OSC
COM1
COM2
COM3
VSS
+5.8 V
Open
LCD panel (up to 420 segments)
VDD
+3.0 V
S106/COM4
P1/S1
P2/S2
VLCD
VLCD0
VLCD1
P8/S8
S9
VLCD2
C ≥ 0.047µF
C
C
INH
From the
controller
CE
S104
CL
DI
S105
Note: *2 When a capacitor except the recommended external capacitance (Cosc = 1000 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200 pF.
Sample Application Circuit 8
1/4 Duty, 1/3 Bias (for use with large panels)
(P1)
*2
(P2)
General-purpose
output ports
(P8)
Used for functions
such as backlight
control
OSC
VSS
VLCD
+5.8 V
VLCD0
COM1
COM2
COM3
S106/COM4
P1/S1
P2/S2
R
VLCD1
R
10 kΩ ≥ R ≥ 2.2 kΩ
C ≥ 0.047 µF
From the
controller
VLCD2
C
C
R
INH
CE
CL
DI
P8/S8
S9
LCD panel (up to 420 segments)
VDD
+3.0 V
S104
S105
Note: *2 When a capacitor except the recommended external capacitance (Cosc = 1000 pF) is connected the OSC pin, we recommend that applications
connect the OSC pin with a capacitor in the range 220 to 2200 pF.
No. 7389-26/27
LC75847
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, 2004. Specifications and information herein are subject to
change without notice.
PS No. 7389-27/27