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NXP Semiconductors Electronic Components Datasheet

PCF85134 Datasheet

Universal LCD segment driver

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PCF85134
Universal 60 x 4 LCD segment driver for multiplex rates up to
1:4
Rev. 4 — 11 May 2017
Product data sheet
1. General description
The PCF85134 is a peripheral device which interfaces to almost any Liquid Crystal
Display (LCD)1 with low multiplex rates. It generates the drive signals for any static or
multiplexed LCD containing up to four backplanes and up to 60 segments. It can be easily
cascaded for larger LCD applications. The PCF85134 is compatible with most
microcontrollers and communicates via the two-line bidirectional I2C-bus. Communication
overheads are minimized by a display RAM with auto-incremented addressing, by
hardware subaddressing, and by display memory switching (static and duplex drive
modes).
Although there is a small difference in typical frequency frame and ESD test condition
PCF85134 can be used as drop-in replacement to PCF8534 without any system circuit or
firmware change.
For a selection of NXP LCD segment drivers, see Table 25 on page 45.
2. Features and benefits
Single-chip LCD controller and driver
Selectable backplane drive configurations: static, 2, 3, or 4 backplane multiplexing
60 segment outputs allowing to drive:
30 7-segment alphanumeric characters
15 14-segment alphanumeric characters
Any graphics of up to 240 elements
Cascading supported for larger applications
60 4-bit display data storage RAM
Wide LCD supply range: from 2.5 V for low threshold LCDs up to 6.5 V for high
threshold twisted nematic LCDs
Internal LCD bias generation with voltage follower buffers
Selectable display bias configurations: static, 12, or 13
Wide logic power supply range: from 1.8 V to 5.5 V
LCD and logic supplies may be separated
Low power consumption
400 kHz I2C-bus interface
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 19.


NXP Semiconductors Electronic Components Datasheet

PCF85134 Datasheet

Universal LCD segment driver

No Preview Available !

NXP Semiconductors
PCF85134
Universal 60 x 4 LCD segment driver for low multiplex rates
No external components required
Display memory bank switching in static and duplex drive mode
Versatile blinking modes
Silicon gate CMOS process
3. Ordering information
Table 1. Ordering information
Type number
Topside
marking
Package
Name
PCF85134
PCF85134HL LQFP80
Description
plastic low profile quad flat package; 80 leads; body 12
12 1.4 mm
Version
SOT315-1
3.1 Ordering options
Table 2. Ordering options
Type number
Orderable
part number
PCF85134HL/1 PCF85134HL/1,118
Package
LQFP80
Packing method
REEL 13" Q1/T1
*STANDARD MARK
SMD
Minimum
order quantity
1000
Temperature
Tamb = 40 C to +85 C
PCF85134
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 11 May 2017
© NXP Semiconductors N.V. 2017. All rights reserved.
2 of 51


Part Number PCF85134
Description Universal LCD segment driver
Maker NXP
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PCF85134 Datasheet PDF






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