pcf2113du/f4 NXP Semiconductors, pcf2113du/f4 Datasheet - Page 27

• Manufacturer Part Number: pcf2113du/f4
• Description: Pcf2113x Lcd Controllers/drivers
• Manufacturer: NXP Semiconductors

Philips Semiconductors
8.3
8.3.1
When I/D = 1 (0) the DDRAM or CGRAM address
increments (decrements) by 1 when data is written into or
read from the DDRAM or CGRAM. The cursor or blink
position moves to the right when incremented and to the
left when decremented. The cursor underline and cursor
character blink are inhibited when the CGRAM is
accessed.
8.3.2
When S = 1, the entire display shifts either to the right
(I/D = 0) or to the left (I/D = 1) during a DDRAM write. Thus
it appears as if the cursor stands still and the display
moves. The display does not shift when reading from the
DDRAM, or when writing to or reading from the CGRAM.
When S = 0, the display does not shift.
8.4
8.4.1
The display is on when D = 1 and off when D = 0. Display
data in the DDRAM is not affected and can be displayed
immediately by setting D = 1.
When the display is off (D = 0) the chip is in partial
Power-down mode:
Three oscillator cycles are required after sending the
‘display off’ instruction to ensure all outputs are at V
afterwards the oscillator can be stopped. If the oscillator is
running during partial Power-down mode (‘display off’) the
chip can still execute instructions. Even lower current
consumption is obtained by inhibiting the oscillator
(OSC = V
To ensure I
should be connected to V
left open-circuit and pin PD to V
Power-down mode: PD back to V
back to V
D = 1.
8.4.2
The cursor is displayed when C = 1 and inhibited when
C = 0. Even if the cursor disappears, the display functions
I/D, etcetera, remain in operation during display data write.
The cursor is displayed using 5 dots in the 8th line (see
Fig.6).
2001 Dec 19
The LCD outputs are connected to V
The LCD generator and bias generator are turned off.
LCD controllers/drivers
Entry mode set
Display control (and partial Power-down mode)
B
B
B
B
DD
SS
IT
IT
IT
IT
DD
).
and send a ‘display control’ instruction with
I/D
S
D
C
< 1 A, the parallel bus pins DB7 to DB0
DD
; pins RS and R/W to V
DD
SS
. Recovery from
, if necessary pin OSC
SS
DD
SS
,
or
27
8.4.3
The character indicated by the cursor blinks when B = 1.
The cursor character blink is displayed by switching
between display characters and all dots on with a period of
approximately 1 second, with
The cursor underline and the cursor character blink can be
set to display simultaneously.
8.5
‘Cursor/display shift’ moves the cursor position or the
display to the right or left without writing or reading display
data. This function is used to correct a character or move
the cursor through the display. In 2-line displays, the
cursor moves to the next line when it passes the last
position (40) of the line. When the displayed data is shifted
repeatedly all lines shift at the same time; displayed
characters do not shift into the next line.
The Address Counter (AC) content does not change if the
only action performed is shift display, but increments or
decrements with the ‘cursor display shift’.
8.6
8.6.1
Sets interface data width. Data is sent or received in bytes
(DB7 to DB0) when DL = 1 or in two nibbles (DB7 to DB4)
when DL = 0. When 4-bit width is selected, data is
transmitted in two cycles using the parallel bus. In a 4-bit
application DB3 to DB0 should be left open-circuit (internal
pull-ups). Hence in the first ‘function set’ instruction after
power-on M, SL and H are set to logic 1. A second
‘function set’ must then be sent (2 nibbles) to set M,
SL and H to their required values.
‘Function set’ from the I
logic 1.
8.6.2
Selects either 1-line by 24 display (M = 0) or 2-line by
12 display (M = 1).
8.6.3
Selects MUX 1 : 9, 1-line by 12 display (independent of
M and L). Only rows 1 to 8 and 17 are to be used. All other
rows must be left open-circuit. The DDRAM map is the
same as in the 2-line by 12 display mode, however, the
second line cannot be displayed.
Cursor or display shift
Function set
B
B
B
B
IT
IT
IT
IT
B
DL (
M
SL
PARALLEL MODE ONLY
2
C-bus interface sets the DL bit to
f
blink
=
Product specification
)
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f
PCF2113x
OSC