NXP Semiconductors
UM11099
PCAL6534 demonstration board OM13541
UM11099
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© NXP B.V. 2019. All rights reserved.
User manual
Rev. 1.0 — 1 August 2019
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1 Introduction
The PCAL6534 34-bit GPIO evaluation board allows bidirectional voltage-level translation
and GPIO expansion between 0.8 V to 3.6 V on SCL/SDA and 1.8 V, 2.5 V, 3.3 V, 5.5 V
on I/O ports with active low reset input control and open-drain active low interrupt output
indicator (red LED) plus one hardware address input setting to select one of four different
slave addresses. A graphical interface allows the user to easily explore the different
functions of the I/O expander.
The IC communicates to the host via the industry standard I
2
C-bus/SMBus port. The
evaluation software runs under Microsoft Windows PC platform.