lc75884e Sanyo Semiconductor Corporation, lc75884e Datasheet - Page 10

• Manufacturer Part Number: lc75884e
• Description: 1/4 Duty Lcd Display Drivers With Key Input Function
• Manufacturer: Sanyo Semiconductor Corporation

Control Data Functions
1. S0, S1 : Sleep control data
Note: This assumes that the KS1/S54 and KS2/S55 output pins are selected for key scan output.
2. K0, K1 : Key scan output /segment output selection data
X: don’t care
Note: KSn(n=1 or 2) : Key scan output
3. P0 to P2 : Segment output port/general-purpose output port selection data
Note: Sn(n=1 to 4): Segment 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 (V
D13 is 1, and will output a low level (Vss) when D13 is 0.
S0
K0
P0
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.
These control data bits switch the functions of the KS1/S54 and KS2/S55 output pins between key scan output and
segment output.
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
0
0
1
1
Control data
0
0
1
0
0
0
0
1
Output pin
Sn (n=54 or 55): Segment output
Pn(n=1 to 4): General-purpose output port
S1/P1
S2/P2
S3/P3
S4/P4
Control data
S1
K1
P1
X
0
1
0
1
0
1
0
0
1
1
0
Corresponding display data
P2
0
1
0
1
0
KS1/S54
Normal
Mode
Sleep
Sleep
Sleep
KS1
S54
S54
S1/P1
D13
Output pin state
D1
D5
D9
S1
P1
P1
P1
P1
S2/P2
Output pin state
OSC oscillator
S2
S2
P2
P2
P2
Operating
KS2/S55
Stopped
Stopped
Stopped
KS2
KS2
S55
S3/P3
S3
S3
S3
P3
P3
LC75884E, LC75884W
S4/P4
S4
S4
S4
S4
P4
Maximum number of
Common outputs
Segment outputs
Operating
input keys
30
25
20
L
L
L
KS1
H
H
L
L
Output pin states during key scan standby
KS2
H
H
L
L
KS3
H
H
L
L
LCD
KS4
) when the display data
H
H
L
L
No. 6086-10/27
KS5
H
H
H
L
KS6
H
H
H
H