PCF2119AU/2DA/2 NXP [NXP Semiconductors], PCF2119AU/2DA/2 Datasheet - Page 27

• Manufacturer Part Number: PCF2119AU/2DA/2
• Description: LCD controllers/drivers
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCF2119X_5
Product data sheet
10.2.1.1 Function_set
10.2.1.2 BF_AC instructions
10.2.1 Basic instructions (bit H = 0 or 1)
Table 12.
[1]
[2]
[3]
[4]
[5]
Table 13.
[1]
Bit
RS
R/W
7 to 5
4
3
2
1
0
Bit
RS
R/W
7
6 to 0
When 4-bit width is selected, data is transmitted in two cycles using the parallel-bus. In a 4-bit application
ports DB3 to DB0 should be left open-circuit (internal pull-ups).
Default value after power-on in I
No impact if SL = 1.
Due to the internal pull-ups on DB3 to DB0 in a 4-bit application, the first Function_set after power-on sets
bits M, SL and H to logic 1. A second Function_set must be sent to set bits M, SL and H to the required
values.
Independent of bit M and bit L of the Screen_conf instruction (see
and row 17 are used. All other rows must be left open-circuit. The DDRAM map is the same as in the 2 16
character display mode, however, the second line cannot be displayed.
It is recommended that the BF status is checked before the next write operation is started.
Symbol
-
-
-
DL
-
M
SL
H
Symbol
-
-
BF
AC
Function_set bit description
BF_AC bit
Rev. 05 — 13 August 2009
Value
0
0
001
0
1
0
0
1
0
1
0
1
Value
0
1
0
1
0000000 to
1111111
2
C-bus mode.
[4][5]
[1]
[2]
[3]
[4]
[4]
[1]
Description
see
fixed value
interface data length (for parallel mode only)
unused
number of display lines
multiplex mode
instruction set control
Description
see
read busy flag
read address counter
2
8 bits (DB7 to DB0)
1 line
2 line
1:18 multiplex drive mode, 1
character display
1:9 multiplex drive mode, 1
basic instruction set plus standard instruction set
basic instruction set plus extended instruction set
next instruction will be executed
internal operation is in progress;
next instruction will not be executed until BF = 0
Table 10
Table 10
4 bits (DB7 to DB4)
32 characters
16 characters
Section
10.2.3.1). Only row 1 to row 8
LCD controllers/drivers
PCF2119x
16 character display
© NXP B.V. 2009. All rights reserved.
32 or 2
16
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