PCF2104X データシートの表示（PDF） - Philips Electronics

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PCF2104X

LCD controller/driver

Philips Electronics 

Table 3 Instructions (note 1)

INSTRUCTION RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

DESCRIPTION

REQUIRED

CLOCK

CYCLES(2)

NOP

0 0 0 0 0 0 0 0 0 0 No operation.

0

Clear display

0 0 0 0 0 0 0 0 0 1 Clears entire display and sets DDRAM

165

address 0 in Address Counter.

Return home

0 0 0 0 0 0 0 0 1 0 Sets DDRAM address 0 in Address Counter

3

Also returns shifted display to original position

DDRAM contents remain unchanged.

Entry mode set

0 0 0 0 0 0 0 1 I/D S Sets cursor move direction and specifies shift

3

of display. These operations are performed

during data write and read.

Display control

0 0 0 0 0 0 1 D C B Sets entire display on/off (D), cursor on/off (C)

3

and blink of cursor position character (B).

Cursor/display shift 0 0 0 0 0 1 S/C R/L 0 0 Moves cursor and shifts display without

3

changing DDRAM contents.

Function set

0 0 0 0 1 DL N M G 0 Sets interface data length (DL), number of

3

display lines (N, M) and voltage generator

control (G).

Set CGRAM

0001

ACG

Sets CGRAM address.

3

address

Set DDRAM

001

ADD

Sets DDRAM address.

3

address

Read busy flag and 0

address

1 BF

AC

Reads Busy Flag (BF) indicating internal

0

operation is being performed and reads

Address Counter contents.

Read data

11

read data

Reads data from CGRAM or DDRAM.

3

Write data

10

write data

Writes data to CGRAM or DDRAM.

3

Notes

1. In the I2C-bus mode the DL bit is don't care. 8-bit mode is assumed.

In the I2C-bus mode a control byte is required when RS or R/W is changed; control byte: Co, RS, R/W, 0, 0, 0, 0, 0; command byte: DB7 to DB0.

2. Example: fosc = 150 kHz, Tcy = -f-o--1-s---c = 6.67 µs; 3 cycles = 20 µs, 165 cycles = 1.1 ms.

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