PCF2119AU NXP [NXP Semiconductors], PCF2119AU Datasheet - Page 40

• Manufacturer Part Number: PCF2119AU
• Description: LCD controllers/drivers Single-chip LCD controller and driver
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCF2119X
Product data sheet
10.2.3.4 Temp_ctl
10.2.3.5 HV_gen
Remark: In direct mode, no external V
The direct mode can be used to reduce the current consumption when the required output
voltage V
in MUX 1:9 (depending on LCD liquid properties).
Table 28.
The bit-field TC[1:0] selects the temperature coefficient for the internally generated
V
Table 29.
Table 30.
A software configurable voltage multiplier is incorporated in the V
be set via the HV_gen command. The voltage multiplier control can be used to reduce
current consumption by disconnecting internal voltage multiplier stages, depending on the
required V
Table 31.
Bit
RS
R/W
7 to 2
1 to 0
TC[1:0]
00
10
01
11
Bit
RS
R/W
7 to 2
1 to 0
S[1:0]
00
01
10
11
LCDOUT
(see
Symbol
-
-
-
TC[1:0]
Symbol
-
-
-
S[1:0]
LCDOUT
LCDOUT
Temp_ctl bit description
TC[1:0] selection of V
HV_gen bit description
Voltage multiplier control bits
Description
set V
set V
set V
do not use
Table
All information provided in this document is subject to legal disclaimers.
LCD
LCD
LCD
is close to the V
output voltage (see
Typical value
−0.16 %/K
−0.18 %/K
−0.21 %/K
−0.24 %/K
generator stages to 1 (2 × voltage multiplier)
generator stages to 2 (3 × voltage multiplier)
generator stages to 3 (4 × voltage multiplier)
29).
Rev. 7 — 15 November 2010
Value
0
0
000100
00 to 11
Value
0
0
010000
00 to 11
LCD
DD2
temperature coefficient
Description
V
V
V
V
supply voltage. This can be the case in icon mode or
LCD
LCD
LCD
LCD
Table
LCD
temperature coefficient 0 (default value)
temperature coefficient 1
temperature coefficient 2
temperature coefficient 3
Description
see
temperature coefficient
Description
see
fixed value
voltage multiplier
is possible.
31).
Table 10
Table 10
LCD controllers/drivers
LCD
PCF2119x
generator and can
© NXP B.V. 2010. All rights reserved.
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