LC75893M View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LC75893M Datasheet PDF : 23 Pages
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LC75893M
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 KS4 key scan
outputs during key scan standby.
Control data
S0
S1
0
0
0
1
1
0
1
1
Mode
Normal
Sleep
Sleep
Sleep
OSC oscillator
Operating
Stopped
Stopped
Stopped
Segment outputs
Common outputs
Operating
L
L
L
Output pin states during key scan standby
KS1
KS2
KS3
KS4
H
H
H
H
L
L
L
H
L
L
H
H
H
H
H
H
Note: This assumes that the KS1/S15 and KS2/S16 output pins are selected for key scan output.
2. K0, K1: Key scan output/segment output selection data
These control data bits switch the functions of the KS1/S15 and KS2/S16 output pins between key scan output and
segment output.
Control data
K0
K1
0
0
0
1
1
X
X: don’t care
Output pin state
KS1/S15 KS2/S16
KS1
KS2
S15
KS2
S15
S16
Maximum number
of input keys
20
15
10
Note: KSn (n = 1, 2): Key scan output
Sn (n = 15, 16): Segment output
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.
Control data
P0
P1
P2
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
S1/P1
S1
P1
P1
P1
P1
Output pin state
S2/P2 S3/P3
S2
S3
S2
S3
P2
S3
P2
P3
P2
P3
S4/P4
S4
S4
S4
S4
P4
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.
Output pin
Corresponding display data
S1/P1
D1
S2/P2
D4
S3/P3
D7
S4/P4
D10
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 (VDD) when the display data D10 is 1, and will output a low level (VSS) when D10 is 0.
4. SC: Segment 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.
No. 5971-8/23
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