These highly integrated drivers, optimized for low voltage and low power at a low cost,
have a minimum V
DD
and V
LCD
of only 1.8 V, and typically consume just 4.6 μA at mux 1:4,
a frame frequency of 64 Hz, and all segments driven ON. Housed in small TSSOP
packages, they are ideally suited for use in metering, consumer healthcare, small
appliances, battery-operated systems, wearable devices, and more.
NXP LCD segment
drivers PCF8551
& PCF8553
Low-power, low-cost LCD segment drivers
for compact, effi cient applications
KEY FEATURES
PCF8551: 4 x 36 LCD segment driver in TSSOP48 package
PCF8553: 4 x 40 LCD segment driver in TSSOP56 package
V
DD
and V
LCD
with independent supplies (range: 1.8 to 5.5 V)
Multiplex drive mode selectable for static, 1:2, 1:3 and 1:4
Display bias confi guration selectable for static, 1/2 and 1/3
Display inversion mode selectable for line (driving scheme A)
and frame inversion (driving scheme B)
Selectable internal or external clock via input pin CLK
Programmable frame frequency from 32 to 128 Hz
Selectable power-on-reset (POR) functionality via input pin PORE
Blinking functionality and selectable blinking frequencies
Programmable power drive boost mode to increase driving
capability of LCD outputs and support large displays with
higher effective capacitance
Ultra-low power (I
DD
+ I
LCD
):
- 50 nA (typ) in power-down mode
- 1.6 μA (typ) in static mode and all segments ON
- 4.6 μA (typ) in mux 1:4 and all segments ON
Operating temperature range −40 to +85
o
C
KEY BENEFITS
Low voltage
�� Low power
Low cost
High reliability
Design versatility
Suitable for a wide selection of LCDs
APPLICATIONS
Utility meters
Consumer healthcare devices, such as meters for blood
glucose or blood pressure
Small appliances, including coffee makers, weight scales,
thermostats, etc.
Wearable devices
The NXP PCF8551 and PCF8553 are single-chip LCD controllers and
drivers that integrate an oscillator, bias generation, and instruction
decoding. The PCF8551 is a 4 x 36 driver in a TSSOP48 package,
while the PCF8553 is a 4 x 40 driver in a TSSOP56 package.
NXP_07_0050_PCF8851 PCF8553 leaflet_939775017555_v2.indd 1 9/07/14 10:12
When designers replace a microcontroller that integrates an
LCD driver with a two-chip combination that uses a lower-cost
microcontroller and an external LCD driver like the PCF8551
or PCF8553, the result is greater design fl exibility, better
performance, and higher reliability – all at a comparable
cost. For example, to create a very cost-effective solution
without compromising quality or performance, designers
can use the PCF8551 or PCF8553 with one of NXP’s low-cost
microcontrollers, such as the LPC812 in a TSSOP20 package.
The PCF8551 is available with a 2-line I
2
C interface that operates
at up to 400 kHz, or a 3-line SPI interface that operates at up to
3 MHz. The PCF8553 has a selectable I
2
C or SPI interface.
Both devices offer very low current consumption. To reduce
consumption even further, the designer can select a low-
capacitance display and program it for a low multiplex rate
(depending on the display resolution), and a low frame
frequency. Selecting a low V
LCD
voltage can help, too.
www.nxp.com
© 2014 NXP Semiconductors N.V.
All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The
information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and
may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof
does not convey nor imply any license under patent- or other industrial or intellectual property rights.
Date of release: July 2014
Document order number: 9397 750 17555
Printed in the Netherlands
Type Package and size Marking Interface Delivery
PCF8551ATT/A TSSOP48: 6.1 x 12.5 x 0.95 mm; pitch = 0.5 mm PCF8551A I
2
C (400 kHz) Tape and Reel
PCF8551BTT/A TSSOP48: 6.1 x 12.5 x 0.95 mm; pitch = 0.5 mm PCF8551B SPI (3 MHz) Tape and Reel
PCF8553DTT/A TSSOP56: 6.1 x 14.0 x 0.95 mm; pitch = 0.5 mm PCF8553D Selectable I
2
C or SPI Tape and Reel
Ordering information
Ultra-low (Please see the datasheet for additional information)
Features
Design fl exibility Limited High
Resolution Limited High
Optical performance Limited High
Reliability Limited High
Cost Low Comparable
Microcontroller
LCD driver
LCD driver
Microcontroller
Integrated versus standalone LCD driver
PCF8551 and PCF8553 pin confi gurations
I
DD
= ~ 0.6 µA (typ) I
LCD
= ~ 1 µA (typ) in static mode I
LCD
= ~4 µA (typ) in mux 1:4
NXP_07_0050_PCF8851 PCF8553 leaflet_939775017555_v2.indd 2 9/07/14 10:12