PCA8538UG(2014) View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
PCA8538UG Datasheet PDF : 107 Pages
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PCA8538
Automotive 102 x 9 Chip-On-Glass LCD segment driver
Rev. 4 — 26 September 2014
Product data sheet
1. General description
The PCA8538 is a fully featured Chip-On-Glass (COG)1 Liquid Crystal Display (LCD)
driver, designed for high-contrast Vertical Alignment (VA) LCD with multiplex rates up to
1:9. It generates the drive signals for a static or multiplexed LCD containing up to
9 backplanes, 102 segments, and up to 918 segments/elements. The PCA8538 features
an internal charge pump with internal capacitors for on-chip generation of the LCD driving
voltage. To ensure an optimal and stable contrast over the full temperature range, the
PCA8538 offers a programmable temperature compensation of the LCD supply voltage.
The PCA8538 can be easily controlled by a microcontroller through either the two-line
I2C-bus or a four-line bidirectional SPI-bus.
For a selection of NXP LCD segment drivers, see Table 62 on page 97.
2. Features and benefits
AEC Q100 grade 2 compliant for automotive applications
Low power consumption
Extended operating temperature range from 40 C to +105 C
102 segments and 9 backplanes allowing to drive:
up to 114 7-segment numeric characters
up to 57 14-segment alphanumeric characters
any graphics of up to 918 segments/elements
918-bit RAM for display data storage
Two sets of backplane outputs providing higher flexibility for optimal COG layout
configurations
Up to 4 chips can be cascaded to drive larger displays with an internally generated or
externally supplied VLCD
Selectable backplane drive configuration: static, 2, 4, 6, 8, or 9 backplane multiplexing
LCD supply voltage
Programmable internal charge pump for on-chip LCD voltage generation up to
5 VDD2
External LCD voltage supply possible as well
Selectable 400 kHz I2C-bus or 3 MHz SPI-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
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 21 on page 99.
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