LC75804 查看數據表（PDF） - SANYO -> Panasonic

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LC75804

1/3, 1/4 Duty LCD Display Drivers with Key Input Function

SANYO -> Panasonic 

LC75804E, LC75804W

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.

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

Note: This assumes that the KS1/S75 and KS2/S76 output pins are selected for key scan output.

Output pin states during key scan standby

KS1 KS2 KS3 KS4 KS5 KS6

H

H

H

H

H

H

L

L

L

L

L

H

L

L

L

L

H

H

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/S75 and KS2/S76 output pins between key scan output and

segment output.

Control data

K0

K1

0

0

0

1

1

X

Output pin state

KS1/S75

KS2/S76

KS1

KS2

S75

KS2

S75

S76

X: don’t care

Note: KSn(n = 1 or 2) : Key scan output

Sn (n = 75 or 76): Segment output

Maximum number of

input keys

30

25

20

3. P0 to P3 : Segment output port/general-purpose output port selection data

These control data bits switch the functions of the S1/P1 to S8/P8 output pins between the segment output port and

the general-purpose output port.

Control data

Output pin state

P0

P1

P2

P3

S1/P1 S2/P2 S3/P3 S4/P4 S5/P5 S6/P6 S7/P7 S8/P8

0

0

0

0

S1

S2

S3

S4

S5

S6

S7

S8

0

0

0

1

P1

S2

S3

S4

S5

S6

S7

S8

0

0

1

0

P1

P2

S3

S4

S5

S6

S7

S8

0

0

1

1

P1

P2

P3

S4

S5

S6

S7

S8

0

1

0

0

P1

P2

P3

P4

S5

S6

S7

S8

0

1

0

1

P1

P2

P3

P4

P5

S6

S7

S8

0

1

1

0

P1

P2

P3

P4

P5

P6

S7

S8

0

1

1

1

P1

P2

P3

P4

P5

P6

P7

S8

1

0

0

0

P1

P2

P3

P4

P5

P6

P7

P8

Note: Sn(n=1 to 8): Segment output port

Pn(n=1 to 8): 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

1/3 duty

1/4 duty

S1/P1

D1

D1

S2/P2

D4

D5

S3/P3

D7

D9

S4/P4

D10

D13

S5/P5

D13

D17

S6/P6

D16

D21

S7/P7

D19

D25

S8/P8

D22

D29

For example, if the circuit is operated in 1/4 duty and 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.

No. 6266-12/37

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