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PCF2113

LCD controllers/drivers

NXP Semiconductors. 

NXP Semiconductors

PCF2113x

LCD controllers/drivers

Table 11. Explanation of symbols

Bit

Logic 0

Logic 1

Co

last control byte

another control byte follows after

data/command

RS

select instruction register

select data register

DL

data length: 4 bits

data length: 8 bits

M (no impact if SL = 1)

1 line × 24 character display

2 line × 12 character display

SL

MUX 1:18 (1 line × 24 character MUX 1:9 (1 line × 12 character

or 2 line × 12 character display) display)

H

use basic instruction set

use extended instruction set

I/D

decrement

increment

S

display freeze

display shift

D

display off

display on

C

cursor off

cursor on

B

cursor character blink off;

cursor character blink on;

character at cursor position does character at cursor position blinks

not blink

S/C

cursor move

display shift

R/L

left shift

right shift

L (no impact if M = 1 or

SL = 1)

left/right screen;

standard connection

left/right screen;

mirrored connection

1st 12 characters of 24;

columns are from 1 to 60

1st 12 characters of 24;

columns are from 60 to 1

2nd 12 characters of 24;

columns are from 1 to 60

2nd 12 characters of 24;

columns are from 60 to 1

P

column data; left to right; column column data; right to left; column

data is displayed from 1 to 60 data is displayed from 60 to 1

Q

row data; top to bottom; row data row data; top to bottom; row data

is displayed from 1 to 16 and icon is displayed from 16 to 1 and icon

row data is in 17 and 18

row data is in 18 and 17

IM

Character mode; full display

Icon mode; only icons displayed

IB

icon blink disabled

icon blink enabled

DM

Direct mode disabled

Direct mode enabled

V

set VA

set VB

9.1 Clear display

‘Clear display’ writes character code 20h into all DDRAM addresses (the character pattern

for character code 20h must be a blank pattern), sets the DDRAM address counter to 0

and returns the display to its original position, if it was shifted. Thus, the display

disappears and the cursor or blink position goes to the left edge of the display. Sets entry

mode I/D = 1 (increment mode). S of entry mode does not change.

The instruction ‘clear display’ requires extra execution time. This may be allowed by

checking the Busy Flag (BF) or by waiting until the 165 clock cycles have elapsed.

The latter must be applied where no read-back options are foreseen, as in some

Chip-On-Glass (COG) applications.

PCF2113_FAM_4

Product data sheet

Rev. 04 — 4 March 2008

© NXP B.V. 2008. All rights reserved.

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