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NXP Semiconductors
UM10883
PN7462 family Quick Start Guide - Development Kit
UM10883
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© NXP B.V. 2018. All rights reserved.
User manual
COMPANY PUBLIC
Rev. 1.6 — 14 May 2018
319816
75 of 120
8.10 Updating flash and EEPROM via USB MSD interface
PN7462AU flash and EEPROM content can be updated via USB interface (primary
download mode). To mount a PNEV7462B/C as a USB Mass storage drive:
1. Ensure that “HIF selection” is USB, see Fig 79 (to be skipped with PNEV7462C
board)
2. USB Port of the PC running Windows OS is connected to the micro USB port
labelled X3 on the PNEV7462B
3. Press “RST_N” Press “DWL_REQ” switch
4. Release “RST_N” and keep holding “DWL_REQ”
5. Release “DWL_REQ” button after about two seconds
Fig 79. PN7462AU as USB mass storage device
Now the PNEV7462B is detected by the PC as an USB MSD.
Fig 80. PN7462AU IC detected as USB mass storage device for flash/ EEPROM upgrade