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NXP Semiconductors Electronic Components Datasheet

PCA9620 Datasheet

Universal LCD driver

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PCA9620
Universal LCD driver for low multiplex rates
Rev. 1 — 9 December 2010
Product data sheet
1. General description
The PCA9620 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 eight backplanes, 60 segments, and up to 480 elements. The
PCA9620 is compatible with most microprocessors or microcontrollers and communicates
via a two-line bidirectional I2C-bus. Communication overheads are minimized using a
display RAM with auto-incremented addressing and display memory switching. The
PCA9620 features an internal charge pump with internal capacitors for on-chip generation
of the LCD driving voltages.
AEC Q100 grade 2 compliant for automotive applications.
2. Features and benefits
„ Low power consumption
„ Extended operating temperature range from 40 °C to +105 °C
„ 60 segments and 8 backplanes allowing to drive:
‹ up to 60 7-segment alphanumeric characters
‹ up to 30 14-segment alphanumeric characters
‹ any graphics of up to 480 elementswww.DataSheet.net/
„ 480 bit RAM for display data storage
„ Selectable backplane drive configuration: static, 2, 4, 6, or 8 backplane multiplexing
„ Programmable internal charge pump for on-chip LCD voltage generation up to
3 × VDD2
„ 400 kHz I2C-bus interface
„ Selectable linear temperature compensation of VLCD
„ Selectable display bias configuration
„ Wide range for digital and analog power supply: from 2.5 V to 5.5 V
„ Wide LCD supply range: from 2.5 V for low threshold LCDs and up to 9.0 V for high
threshold (automobile) twisted nematic LCDs
„ Display memory bank switching in static, duplex, and quadruplex drive modes
„ Programmable frame frequency in steps of 10 Hz in the range of 60 Hz to 300 Hz;
factory calibrated with a tolerance of ±15 % covering the whole temperature and
voltage range
„ Selectable inversion scheme for LCD driving waveforms: frame or line inversion
„ Integrated temperature sensor with temperature readout
„ On chip calibration of internal oscillator frequency and VLCD
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 15 on page 65.
Datasheet pdf - http://www.DataSheet4U.co.kr/


NXP Semiconductors Electronic Components Datasheet

PCA9620 Datasheet

Universal LCD driver

No Preview Available !

NXP Semiconductors
PCA9620
Universal LCD driver for low multiplex rates
3. Ordering information
Table 1. Ordering information
Type number Package
Name
Description
PCA9620H
LQFP80 plastic low profile quad flat package; 80 leads;
body 12 × 12 × 1.4 mm
4. Marking
Table 2. Marking codes
Type number
PCA9620H
Marking code
PCA9620H/Q900
5. Block diagram
Version
SOT315-1
VLCD
BP0 to BP7
VDD2
CHARGE
PUMP(1)
(VOLTAGE
MULTIPLIER)
VSS
LCD
VOLTAGE
SELECTOR
LCD BIAS
GENERATOR
BACKPLANE
OUTPUTS
www.DataSheet.net/
DISPLAY
CONTROL
TEMPERATURE
SENSOR
CLOCK SELECT
AND TIMING
PCA9620
S0 to S59
60
DISPLAY SEGMENT OUTPUTS
DISPLAY REGISTER
OUTPUT BANK SELECT
DISPLAY RAM
CLK OSCILLATOR POWER-ON
RESET
COMMAND
DECODER
WRITE DATA
CONTROL
DATA POINTER,
AUTO INCREMENT
SCL
SDA
INPUT
FILTERS
I2C-BUS
CONTROLLER
A0 A1
(1) The charge pump can generate a maximum output voltage of 3 × VDD2.
Fig 1. Block diagram of PCA9620
VDD1
T1 T2 T3
013aaa246
PCA9620
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 9 December 2010
© NXP B.V. 2010. All rights reserved.
2 of 71
Datasheet pdf - http://www.DataSheet4U.co.kr/


Part Number PCA9620
Description Universal LCD driver
Maker NXP Semiconductors
Total Page 30 Pages
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