NXP Semiconductors LPCXpresso54608 User Manual

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NXP Semiconductors UM11035LPCXpresso boards for LPC546xx/LPC540xx/LPC54S0xx families ofMCUsUM11035 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017-2019. All rights reserved.User manual Rev. 2.1 — 7th January 2019 21 of 36the Link2 processor and is not user programmable. Power measurement utilities to usethis feature are available in LPCXpresso and IDE MCUXpresso IDE installations.Due to input offset voltage variations in the MAX9634, the current measurement circuit isnot recommended for measuring current below 150 uA. See Fig 5 as a guideline formeasurement error versus measured current.Fig 5. Current measurement circuit error6.1.4 Shield board current measurementTo use the on-board current measurement circuitry, any expansion board must match thefunctionality of the LPCXpresso546x8/540xx/54S0xx. Refer to the board schematics formore information.7. Board peripheral connections7.1 LPC546x8/540xx/54S0xx USART ports and VCOM supportThe LPCXpresso546x8/540xx/54S0xx board provides access to USART connectionsfrom Flexcomm4 at the expansion connector J13.% ErrorLPC546xx current (μA)Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.