PCA8538UG(2014) View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
PCA8538UG Datasheet PDF : 107 Pages
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NXP Semiconductors
PCA8538
Automotive 102 x 9 Chip-On-Glass LCD segment driver
2. The first command sent to the device after the power-on event must be the Initialize
command (see Section 8.2.1 on page 10).
3. After Power-On Reset (POR) and before enabling the display, the RAM content
should be brought to a defined status
– by clearing it (setting it all logic 0) or
– by writing meaningful content (for example, a graphic)
otherwise unwanted display artifacts may appear on the display.
8.8.2 Reset pin function
The reset pin of the PCA8538 resets all the registers to their default state (see Table 29).
The RAM contents remain unchanged. After the reset signal is removed, the PCA8538 will
behave in the same manner as at POR. See Section 8.8.1 for details.
8.8.3 Recommended start-up sequences
This section describes how to proceed with the initialization of the chip in different
application modes.
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(1) This time depends on the external capacitor on the VLCD pins. For a capacitor of 100 nF a delay
of about 55 ms to 65 ms is expected.
Fig 3. Recommended start-up sequence when using the internal charge pump and the
internal clock signal
When using the internal VLCD generation, the display must not be enabled before the
generation of VLCD with the internal charge pump is completed. Otherwise unwanted
display artifacts may appear on the display.
PCA8538
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 26 September 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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