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NRF7002-QFAA-R Fiches technique(PDF) 43 Page - Nordic Semiconductor

No de pièce NRF7002-QFAA-R
Description  nRF7002
PDF  61 Pages
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Fabricant  NORDIC [Nordic Semiconductor]
Site Internet  https://www.nordicsemi.com/
Logo NORDIC - Nordic Semiconductor

NRF7002-QFAA-R Fiches technique(HTML) 43 Page - Nordic Semiconductor

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Hardware and layout
• De-assert BUCKEN and power down IOVDD
• Power down VBAT
There are no specific timing delay requirements as long as the sequence is correct.
14.3.3 Supply system alternatives
There are two options (high voltage and normal voltage) for connecting nRF7002 to an nRF5340 host,
supporting dynamic powerup/powerdown of the nRF7002. This dynamic control utilises an external switch
to control the IOVDD supply.
The following figure shows the recommended connection between nRF7002 and the host MCU (nRF5340).
32 MHz
40 MHz
nRF5340
(High voltage mode)
VDDH
VDD
GPIO
(Q)SPI
GPIO
GPIO
GPIO
nRF7002
IOVDD
HOST_IRQ
COEX
BUCKEN
VBAT
BUCKVBAT
AFEVBAT
OTPVDD
PWRIOVDD
(Q)SPI
1.8 V
3.6 V
3.6 V
1.8 V (2.5 V)
Figure 19: Supply system - high voltage mode
Both nRF5340 (used in high voltage mode) and nRF7002 can be supplied from a single 3.6 V supply.
nRF5340 can provide a 1.8 V supply used for the IO supply on nRF7002. An external switch is used to
disconnect IOVDD on nRF7002 when not in use. The control of the switch is handled by the Wi-Fi driver on
nRF5340.
4486_184 v1.0
43



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