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LC75884E Fiches technique(PDF) 10 Page - Sanyo Semicon Device

No de pièce LC75884E
Description  1/4 Duty LCD Display Drivers with Key Input Function
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Fabricant  SANYO [Sanyo Semicon Device]
Site Internet  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC75884E Fiches technique(HTML) 10 Page - Sanyo Semicon Device

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Control Data Functions
1. S0, S1 : Sleep control data
These control data bits switch between normal mode and sleep mode and set the states of the KS1 to KS6 key scan
outputs during key scan standby.
Note: This assumes that the KS1/S54 and KS2/S55 output pins are selected for key scan output.
No. 6086-10/27
LC75884E, LC75884W
Control data
Mode
OSC oscillator
Segment outputs
Output pin states during key scan standby
S0
S1
Common outputs
KS1
KS2
KS3
KS4
KS5
KS6
0
0
Normal
Operating
Operating
H
H
H
H
H
H
0
1
Sleep
Stopped
L
L
L
L
L
L
H
1
0
Sleep
Stopped
L
L
L
L
L
H
H
1
1
Sleep
Stopped
L
H
H
H
H
H
H
2. K0, K1 : Key scan output /segment output selection data
These control data bits switch the functions of the KS1/S54 and KS2/S55 output pins between key scan output and
segment output.
X: don’t care
Note: KSn(n=1 or 2) : Key scan output
Sn (n=54 or 55): Segment output
Control data
Output pin state
Maximum number of
K0
K1
KS1/S54
KS2/S55
input keys
0
0
KS1
KS2
30
0
1
S54
KS2
25
1
X
S54
S55
20
3. P0 to P2 : Segment output port/general-purpose output port selection data
These control data bits switch the functions of the S1/P1 to S4/P4 output pins between the segment output port and
the general-purpose output port.
Note: Sn(n=1 to 4): Segment output port
Pn(n=1 to 4): General-purpose output port
The table below lists the correspondence between the display data and the output pins when these pins are selected to be general-purpose output ports.
For example, if the S4/P4 output pin is selected to be a general-purpose output port, the S4/P4 output pin will output a high level (VLCD) when the display data
D13 is 1, and will output a low level (Vss) when D13 is 0.
Control data
Output pin state
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


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