PCF2131 datasheet(33/34 Pages) NXP

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NXP Semiconductors

UM12262

FRDM-IMX91 Board User Manual

Translations — A non-English (translated) version of a document, including

the legal information in that document, is for reference only. The English

version shall prevail in case of any discrepancy between the translated and

English versions.

Security — Customer understands that all NXP products may be subject to

unidentified vulnerabilities or may support established security standards or

specifications with known limitations. Customer is responsible for the design

and operation of its applications and products throughout their lifecycles

to reduce the effect of these vulnerabilities on customer’s applications

and products. Customer’s responsibility also extends to other open and/or

proprietary technologies supported by NXP products for use in customer’s

applications. NXP accepts no liability for any vulnerability. Customer should

regularly check security updates from NXP and follow up appropriately.

Customer shall select products with security features that best meet rules,

regulations, and standards of the intended application and make the

ultimate design decisions regarding its products and is solely responsible

for compliance with all legal, regulatory, and security related requirements

concerning its products, regardless of any information or support that may be

provided by NXP.

NXP has a Product Security Incident Response Team (PSIRT) (reachable

at PSIRT@nxp.com) that manages the investigation, reporting, and solution

release to security vulnerabilities of NXP products.

NXP B.V. — NXP B.V. is not an operating company and it does not distribute

or sell products.

Trademarks

Notice: All referenced brands, product names, service names, and

trademarks are the property of their respective owners.

NXP — wordmark and logo are trademarks of NXP B.V.

AMBA, Arm, Arm7, Arm7TDMI, Arm9, Arm11, Artisan, big.LITTLE,

Cordio, CoreLink, CoreSight, Cortex, DesignStart, DynamIQ, Jazelle,

Keil, Mali, Mbed, Mbed Enabled, NEON, POP, RealView, SecurCore,

Socrates, Thumb, TrustZone, ULINK, ULINK2, ULINK-ME, ULINK-

PLUS, ULINKpro, μVision, Versatile — are trademarks and/or registered

trademarks of Arm Limited (or its subsidiaries or affiliates) in the US and/or

elsewhere. The related technology may be protected by any or all of patents,

Bluetooth — the Bluetooth wordmark and logos are registered trademarks

owned by Bluetooth SIG, Inc. and any use of such marks by NXP

Semiconductors is under license.

UM12262

All information provided in this document is subject to legal disclaimers.

User manual

Rev. 3.0 — 22 April 2025

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