Ordering number : ENN4966C
CMOS IC
LC75842E, LC75842M
General-Purpose 1/2 Duty LCD Display Driver
Overview
The LC75842E and LC75842M are 1/2 duty general-
purpose LCD display drivers for applications such as
microprocessor-controlled electronic tuning. They can
drive up to 54 segments directly.
Package Dimensions
unit: mm
3162C-QFP36
[LC75842E]
0.5
9.0
7.0
Features
• 1/2 duty, 1/2 bias drive of up to 54 segments
• Serial data input supports CCB* format communication
with the system controller.
• Backup function which is based on a power saving
mode and all segments off functions that are controlled
by serial data.
• High generality, since display data is displayed directly
without decoder intervention.
• The display can be forced to the off state with the INH
pin.
• RC oscillator circuit
*
• 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.
27
19
18
28
36
1
0.65
(0.9)
1.7max
0.3
10
9
0.15
0.1
(1.5)
7.0
9.0
SANYO: QFP36
unit: mm
3204-MFP36S
[LC75842M]
SANYO: MFP36S
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
92501TN (OT)/41096HA (OT)/61595HA (OT) No. 4966-1/10
LC75842E, LC75842M
Specifications
Absolute Maximum Ratings
at Ta = 25°C, V
SS
= 0 V
Parameter
Maximum supply voltage
Input voltage
Output voltage
Output current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
V
DD
max
V
IN
1
V
IN
2
V
OUT
I
OUT
1
I
OUT
2
Pd max
Topr
Tstg
V
DD
CE, CL, DI, INH
OSC
OSC, S1 to S27, COM1, COM2
S1 to S27
COM1, COM2
Ta = 85°C
Conditions
Ratings
–0.3 to +6.5
–0.3 to +6.5
–0.3 to V
DD
+ 0.3
–0.3 to V
DD
+ 0.3
100
1
100
–40 to +85
–55 to +125
Unit
V
V
V
V
µA
mA
mW
°C
°C
Allowable Operating Ranges
at Ta = –40 to +85°C, V
SS
= 0 V
Parameter
Supply voltage
Input high level voltage
Input low level voltage
Recommended external resistance
Recommended external capacitance
Guaranteed oscillator range
Low level clock pulse width
High level clock pulse width
Data setup time
Data hold time
CE wait time
CE setup time
CE hold time
INH switching time
Symbol
V
DD
V
IH
V
IL
R
OSC
C
OSC
f
OSC
t
øL
t
øH
t
ds
t
dh
t
cp
t
cs
t
ch
t
c
V
DD
CE, CL, DI, INH
CE, CL, DI, INH
OSC
OSC
OSC
CL: Figure 1
CL: Figure 1
CL, DI: Figure 1
CL, DI: Figure 1
CE, CL: Figure 1
CE, CL: Figure 1
CE, CL: Figure 1
INH, CE: Figure 3
25
160
160
160
160
160
160
160
10
Conditions
Ratings
min
4.0
0.8 V
DD
0
68
680
50
100
typ
5.0
max
6.0
6.0
0.2 V
DD
Unit
V
V
V
kΩ
pF
kHz
ns
ns
ns
ns
ns
ns
ns
µs
Electrical Characteristics
in the Allowable Operating Ranges
Parameter
Hysteresis voltage
Input high level current
Input low level current
Output high level voltage
Symbol
V
H
I
IH
I
IL
V
OH
1
V
OH
2
V
OL
1
V
OL
2
V
MID
1
V
MID
2
f
OSC
I
DD
1
I
DD
2
Conditions
CE, CL, DI, INH: V
DD
= 5.0 V
CE, CL, DI, INH: V
I
= 6.0 V
CE, CL, DI, INH: V
I
= 0 V
S1 to S27: I
O
= –10 µA
COM1, COM2: I
O
= –100 µA
S1 to S27: I
O
= 10 µA
COM1, COM2: I
O
= 100 µA
COM1, COM2: V
DD
= 6.0 V, I
O
= ±100 µA
COM1, COM2: V
DD
= 4.0 V, I
O
= ±100 µA
OSC: R
OSC
= 68 kΩ, C
OSC
= 680 pF
Power saving mode
V
DD
= 6.0 V, output open, f
OSC
= 50 kHz
1.2
2.4
1.4
40
3.0
2.0
50
–5.0
V
DD
– 1.0
V
DD
– 0.6
1.0
0.6
3.6
2.6
60
5
2.0
Ratings
min
typ
0.4
5.0
max
Unit
V
µA
µA
V
V
V
V
V
V
kHz
µA
mA
Output low level voltage
Output middle level voltage
Oscillator frequency
Current drain
No. 4966-2/10
LC75842E, LC75842M
1. When CL is stopped at the low level
VIH
CE
tøH
tøL
VIL
VIH
50%
VIL
VIH
DI
VIL
tds
tdh
CL
tcp
tcs
tch
2. When CL is stopped at the high level
VIH
CE
tøL
tøH
VIL
VIH
50%
VIL
VIH
DI
VIL
tds
tdh
A03902
CL
tcp
tcs
tch
Figure 1
Pin Assignments
S27
S26
S25
S24
S23
S22
S21
S20
S19
19
18
OSC
VDD
INH
VSS
CE
CL
DI
COM2
COM1
S18
S17
S16
S15
36
LC75842E
S14
S13
S12
S11
1
36
1
9
10
S10
Top view
CL
DI
COM2
COM1
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
Top view
S1
S2
S3
S4
S5
S6
S7
S8
S9
A03195
CE
V
SS
INH
V
DD
OSC
S27
S26
S25
S24
S23
S22
S21
S20
S19
S18
S17
S16
S15
19
27
28
LC75842M
18
No. 4966-3/10
LC75842E, LC75842M
Block Diagram
COM1
COM2
S25
S26
S27
S1
COMMON
DRIVER
SEGMENT DRIVER & LATCH
OSC
INH
V
DD
CLOCK
GENERATOR
SHIFT REGISTER
CCB INTERFACE
V
SS
CE
CL
DI
A03196
Pin Functions
Pin
S1 to S27
COM1
COM2
OSC
Pin No.
LC75842E LC75842M
1 to 27
36
35
28
5 to 31
4
3
32
Function
Segment outputs for displaying the display data transferred by serial data input.
Common driver outputs. The frame frequency f
O
is f
OSC
/512 Hz.
Oscillator connection. An oscillator circuit is formed by connecting an external
resistor and capacitor at this pin.
Serial data transfer inputs. Must be connected to the control microprocessor.
CE: Chip enable
CL: Synchronization clock
DI: Transfer data
Display off control input
INH = low (V
SS
) .....Display off (S1 to S27, COM1 and COM2 = low)
INH
30
34
INH = high (V
DD
)....Display on
However, serial data transfer is possible when the display is forced off by this
pin.
V
DD
V
SS
29
31
33
35
Power supply. Provide a power supply voltage of between 4.0 and 6.0 V.
Power supply. Connect this pin to ground.
—
—
—
—
—
—
L
I
GND
Active
—
—
I/O
O
O
Handling when
unused
Open
Open
—
I/O
V
DD
CE
CL
DI
32
33
34
36
1
2
H
I
—
GND
No. 4966-4/10
LC75842E, LC75842M
Serial Data Transfer Format
1. When CL is stopped at the low level
CE
CL
DI
0
B0
0
B1
1
B2
0
B3
0
A0
0
A1
1
A2
0
A3
D1
D2
D3
D25 D26 D27 D28 BU
SC
0
0
CCB address
8 bits
Display data
28 bits
Control data
4 bits
CE
CL
DI
0
B0
0
B1
1
B2
0
B3
0
A0
0
A1
1
A2
0
A3
D29
D30 D31
D53 D54
0
0
0
0
0
1
CCB address
8 bits
Display data
26 bits
Fixed data
6 bits
A03197
No. 4966-5/10
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