pcf2113du/f4 NXP Semiconductors, pcf2113du/f4 Datasheet - Page 30

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

Philips Semiconductors
9.3
When IM = 0, the chip is in character mode. In the
character mode characters and icons are driven
(MUX 1 : 18). The V
V
When IM = 1, the chip is in icon mode. In the icon mode
only the icons are driven (MUX 1 : 2) and the V
generator, if used, produces the V
programmed in register V
Table 7 Normal/icon mode operation
9.4
Icon blink control is independent of the cursor/character
blink function.
When IB = 0, the icon blink is disabled. Icon data is stored
in CGRAM character 0 to 2 (3
120 icons).
When IB = 1, the icon blink is enabled. In this case each
icon is controlled by two bits. Blink consists of two half
phases (corresponding to the cursor on and off phases
called even and odd phases hereafter).
Icon states for the even phase are stored in CGRAM
characters 0 to 2 (3
These bits also define icon state when icon blink is not
used (see Table 9).
Icon states for the odd phase are stored in CGRAM
character 4 to 6 (another 120 bits for the 120 icons). When
icon blink is disabled CGRAM characters 4 to 6 may be
used as normal CGRAM characters.
9.5
When DM = 0, the chip is not in the direct mode. Either the
internal V
used to achieve V
Table 9 Blink effect for icons and cursor character blink
2001 Dec 19
Cursor character blink
Icons
LCD
LCD controllers/drivers
IM
0
1
voltage programmed in register V
Bit IM
Bit IB
Direct mode
LCD
character mode
icon mode
PARAMETER
generator or an external voltage may be
LCD
MODE
LCD
.
8
generator, if used, produces the
B
5 = 120 bits for 120 icons).
.
8
LCD
generates V
generates V
5 = 120 bits for
voltage as
A
.
block (all on)
state 1; CGRAM character 0 to 2
V
LCD
A
B
LCD
EVEN PHASE
30
When DM = 1, the chip is in direct mode. The internal V
generator is turned off and the V
connected to the V
The direct mode can be used to reduce the current
consumption when the required V
close to the V
icon mode or in Mux 1:9 (depending on LCD liquid
properties).
9.6
Bits S1 and S0
A software configurable voltage multiplier is incorporated
in the V
stages’ command.
The voltage multiplier control can be used to reduce
current consumption by disconnecting internal voltage
multiplier stages, depending on the required V
voltage (see Table 8).
Table 8 S1 and S0 control of voltage multiplier
9.7
Bit L
L = 0: the two halves of a split screen are connected in a
standard way i.e. column 1/61, 2/62 to 60/120; default.
L = 1: the two halves of a split screen are connected in a
mirrored way i.e. column 1/120, 2/119 to 60/61. This
allows single layer PCB or glass layout.
S1
0
0
1
1
Voltage multiplier control
Screen configuration
LCD
generator and can be set via the ‘Set HVgen
S0
0
1
0
1
DD2
supply voltage. This can be the case in
LCD
normal (display character)
state 2; CGRAM character 4 to 6
set V
(2 x voltage multiplier)
set V
(3 x voltage multiplier)
set V
(4 x voltage multiplier)
do not use
generator supply voltage V
LCD
LCD
LCD
generator stages to 1
generator stages to 2
generator stages to 3
DESCRIPTION
ODD PHASE
LCD2
LCD2
Product specification
output is directly
output voltage is
PCF2113x
LCD
DD2
output
.
LCD