PCF2119AU NXP [NXP Semiconductors], PCF2119AU Datasheet - Page 56
PCF2119AU
Manufacturer Part Number
PCF2119AU
Description
LCD controllers/drivers Single-chip LCD controller and driver
Manufacturer
NXP [NXP Semiconductors]
Datasheet
1.PCF2119AU.pdf
(83 pages)
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NXP Semiconductors
PCF2119X
Product data sheet
16.3 Power supply connections for external V
16.4 Information about V
16.5 Reducing current consumption
Remark: When using an external V
switched on and direct mode must be avoided otherwise damages will occur.
V
the bias level buffers.
V
must be connected to V
must be left unconnected.
V
using the internal V
When using an external V
Reducing current consumption can be achieved by one of the options given in
When V
to use the on-chip V
Fig 40. Recommended V
Fig 41. Recommended V
LCDIN
LCDOUT
LCDSENSE
— This input is used for generating the 5 LCD bias levels. It is the power supply for
LCD
— This is the V
Drawings are showing alternative circuits.
Decoupling capacitors are not shown in the drawings.
The value of the capacitor should be at least 100 nF.
1.5 V to 5.5 V
2.2 V to 4.0 V
— This input is used for the voltage multiplier’s regulation circuitry. When
lies outside the V
All information provided in this document is subject to legal disclaimers.
GND
LCD
LCD
Rev. 7 — 15 November 2010
generation, this pin must be connected to V
LCDIN
generator than an external regulator.
LCD
V
V
V
V
V
LCD
LCD
DD1
DD2
DD3
SS1
SS2
DD
LCD
013aaa114
output if V
connections for external V
DD
and to V
connections for external V
V
supply it must be connected to V
connections
LCD(ext)
range and must be generated, it is usually more efficient
LCD
V
SS2
LCDSENSE
LCD
, the internal V
is generated internally. In this case pin V
n.c.
. If V
V
V
V
LCDIN
LCDOUT
LCDSENSE
LCD
LCD
013aaa118
LCD
LCD
LCD
2.2 V to 4.0 V
is generated externally, V
generation
generator must never be
generation
generation
GND
LCDIN
LCD controllers/drivers
LCDOUT
PCF2119x
only.
V
V
V
V
V
DD1
DD2
DD3
SS1
SS2
© NXP B.V. 2010. All rights reserved.
013aaa117
and V
Table
LCDIN
LCDOUT
LCDOUT
56 of 83
37.
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