LC74786 Просмотр технического описания (PDF) - SANYO -> Panasonic

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Компоненты Описание

производитель

LC74786

On-Screen Display Controller

SANYO -> Panasonic 

LC74786, 74786M, 74786JM

COMMAND3 (Horizontal display start position and horizontal size setup command)

• First byte

DA

Register

0 to 7

7

—

6

—

5

—

4

—

3

HS21

2

HS20

1

HS11

0

HS10

Contents

State

Function

1

0 Command 3 identification code.

1 Sets the horizontal display start position and the horizontal character size.

1

0

1

HS21

HS20

0

0

1

1

0

1 Tc/dot

3 Tc/dot

1

2 Tc/dot

1 Tc/dot

0

1

HS11

HS10

0

0

1

1

0

1 Tc/dot

3 Tc/dot

1

2 Tc/dot

1 Tc/dot

Notes

Second line horizontal character size

First line horizontal character size

• Second byte

DA

0 to 7

7

6

5

4

3

2

1

0

Register

—

LC

HP5

(MSB)

HP4

HP3

HP2

HP1

HP0

(LSB)

Contents

State

Function

0 Second byte identification bit

0 Use the LC oscillator for the dot clock

1 Use the crystal oscillator for the dot clock

0 If HS is the horizontal start position then:

5

1 HS =Tc × (2Σ 2n HPn)

n=0

0 Tc: Period of the oscillator connected to OSCIN/OSCOUT in operating

1 mode.

0

1

0

1

0

1

0

1

Notes

Selects the dot clock used for character display in the

horizontal direction.

The horizontal display start position is set by the 6

bits HP0 to HP5.

The weight of bit 1 is 2Tc.

Note: All registers are set to 0 when the LC74786/M/JM is reset by the RST pin.

No. 5729-12/23

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