LC75836W

No.A0428-11/18

Control Data Functions

1. FC0 to FC2: Common/segment output waveform frame frequency control data

These control data bits set the frame frequency of the common and segment output waveforms.

Control data

FC0

FC1

FC2

Frame frequency fo [Hz]

1

1

0

fosc/768,fCK/768

1

1

1

fosc/576,fCK/576

0

0

0

fosc/384,fCK/384

0

0

1

fosc/288,fCK/288

0

1

0

fosc/192,fCK/192

2. P0 to P2: Segment output port/general-purpose output port switching control data

These control data bits switch the segment output port/general-purpose output port functions of the S1/P1 to S4/P4

output pins.

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

Note: Sn (n = 1 to 4): Segment output ports

Pn (n = 1 to 4): General-purpose output ports

Note that when the general-purpose output port function is selected, the correspondence between the output pins and

the display data will be that shown in the table.

Output pin

Corresponding display data

S1/P1

D1

S2/P2

D5

S3/P3

D9

S4/P4

D13

For example, if the general-purpose output port function is selected for the S4/P4 output pin, that output pin will

output a high level (VDD) when the display data D13 is 1, and a low level (VSS) when the D13 is 0.

3. OC: RC oscillator operating mode/external clock operating mode switching control data.

This control data bit switches the OSC pin function

(either RC oscillator operating mode or external clock operating mode).

OC

OSC pin function

0

RC oscillator operating mode

1

External clock operating mode

Note: An external resistor, Rosc, and an external capacitor, Cosc, must be connected to the OSC pin if RC oscillator

operating mode is selected.

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

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.