The LC75841PE is static drive or 1/2-duty drive, microcontroller-controlled general-purpose LCD driver that can be
used in applications such as frequency display in products with electronic tuning. In addition to being capable to drive
up to 54 segments directly, it can control up to 4 general-purpose output ports.
Features
•
Serial data control of switching between static drive mode and 1/2 duty drive mode.
When 1/1-duty: Capable of driving up to 27 segments
When 1/2-duty: Capable of driving up to 54 segments
•
Serial data input supports CCB format communication with the system controller.
•
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
(up to 4 general-purpose output ports).
•
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.
•
Allows compatible operation with the LC75842 (842 mode transfer function).
•
CCB is ON Semiconductor® ’s original format. All addresses are managed
by ON Semiconductor® for this format.
•
CCB is a registered trademark of Semiconductor Components Industries, LLC.
Semiconductor Components Industries, LLC, 2013
July, 2013
N1809HKIM 20091006-S00001 No.A1578-1/18
LC75841PE
Specifications
Absolute Maximum Ratings
at Ta = 25°C, VSS = 0V
Parameter
Maximum supply voltage
Input voltage
Symbol
VDD max
VIN1
VIN2
Output voltage
Output current
VOUT
IOUT1
IOUT2
IOUT3
Allowable power dissipation
Operating temperature
Storage temperature
Pd max
Topr
Tstg
VDD
CE, CL, DI, INH
OSC
S1 to S27, COM1, COM2, P1 to P4, OSC
S1 to S27
COM1, COM2
P1 to P4
Ta=105°C
Conditions
Ratings
-0.3 to +7.0
-0.3 to +7.0
-0.3 to VDD+0.3
-0.3 to VDD+0.3
300
3
5
50
-40 to +105
-55 to +125
mW
°C
°C
V
μA
mA
Unit
V
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Allowable Operating Ranges
at Ta = -40 to +105°C, VSS = 0V
Parameter
Supply voltage
Input high-level voltage
Symbol
VDD
VIH1
VIH2
Input low-level voltage
VIL1
VIL2
Recommended external resistor
for RC oscillation
Recommended external capacitor
for RC oscillation
Guaranteed range of RC
oscillation
External clock operating frequency
External clock duty cycle
Data setup time
Data hold time
CE wait time
CE setup time
CE hold time
High-level clock pulse width
Low-level clock pulse width
Rise time
Fall time
INH switching time
fCK
DCK
tds
tdh
tcp
tcs
tch
tφH
tφL
tr
tf
tc
OSC External clock operating mode [Figure 3]
OSC External clock operating mode [Figure 3]
CL, DI
CL, DI
CE, CL
CE, CL
CE, CL
CL
CL
CE, CL, DI
CE, CL, DI
INH, CE
[Figure 1][Figure 2]
[Figure 1][Figure 2]
[Figure 1][Figure 2]
[Figure 1][Figure 2]
[Figure 1][Figure 2]
[Figure 1][Figure 2]
[Figure 1][Figure 2]
[Figure 1][Figure 2]
[Figure 1][Figure 2]
[Figure 4][Figure 5][Figure 6]
10
fosc
OSC RC oscillator operating mode
19
19
30
160
160
160
160
160
160
160
160
160
Cosc
OSC RC oscillator operating mode
Rosc
VDD
CE, CL, DI, INH
OSC External clock operating mode
CE, CL, DI, INH
OSC External clock operating mode
OSC RC oscillator operating mode
Conditions
min
4.0
0.45VDD
0.45VDD
0
0
39
1000
38
38
50
76
76
70
Ratings
typ
max
6.0
6.0
VDD
0.2VDD
0.2VDD
kΩ
pF
kHz
kHz
%
ns
ns
ns
ns
ns
ns
ns
ns
ns
μs
V
V
V
unit
No.A1578-2/18
LC75841PE
Electrical Characteristics
for the Allowable Operating Ranges
Parameter
Hysteresis
Input high-level current
Symbol
VH
IIH1
IIH2
Input low-level current
IIL1
IIL2
Output high-level voltage
VOH1
VOH2
VOH3
Output low-level voltage
VOL1
VOL2
VOL3
Output middle-level
voltage
Oscillator frequency
Current drain
fosc
IDD1
IDD2
OSC
VDD
VDD
RC oscillator operating mode,
Rosc=39kΩ, Cosc=1000pF
Power-saving mode
VDD=6.0V, Output open,
RC oscillator operating mode,
fosc=38kHz, Static
IDD3
VDD
VDD=6.0V, Output open,
RC oscillator operating mode,
fosc=38kHz, 1/2 duty
IDD4
VDD
VDD=6.0V, Output open,
External clock operating mode,
fCK=38kHz,
VIH2=0.5VDD,
VIL2=0.1VDD,
Static
IDD5
VDD
VDD=6.0V, Output open,
External clock operating mode,
fCK=38kHz,
VIH2=0.5VDD,
VIL2=0.1VDD,
1/2 duty
1600
3200
450
900
μA
1500
3000
VMID
Pin
CE, CL, DI, INH
CE, CL, DI, INH
OSC
CE, CL, DI, INH
OSC
S1 to S27
COM1, COM2
P1 to P4
S1 to S27
COM1, COM2
P1 to P4
COM1, COM2
VI=6.0V
VI=VDD External clock operating mode
VI=0V
VI=0V External clock operating mode
IO=-20μA
IO=-100μA
IO=-1mA
IO=20μA
IO=100μA
IO=1mA
1/2 bias IO=±100μA
1/2VDD
-0.9
30.4
38
-5.0
-5.0
VDD-0.9
VDD-0.9
VDD-0.9
0.9
0.9
0.9
1/2VDD
+0.9
45.6
15
350
700
V
kHz
V
V
Conditions
min
Ratings
typ
0.03VDD
5.0
5.0
max
V
μA
μA
unit
No.A1578-3/18
LC75841PE
1. When CL is stopped at the low level
≈
CE
VIH1
VIL1
≈ ≈
tφH
CL
VIH1
50%
VIL1
tφL
≈ ≈ ≈
tr
DI
VIH1
VIL1
tf
tcp
tcs
tch
≈ ≈
tds
tdh
[Figure 1]
2. When CL is stopped at the high level
≈
CE
VIH1
VIL1
≈
tφL
CL
tf
DI
tds
tφH
VIH1
50%
VIL1
≈
≈ ≈ ≈
tr
tcp
tcs
tch
≈ ≈
VIH1
VIL1
tdh
[Figure 2]
3. OSC pin clock timing in external clock operating mode
PCB设计
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