NRF7002-QFAA-R7 datasheet(43/61 Pages) NORDIC

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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

nRF7002

IOVDD

HOST_IRQ

COEX

BUCKEN

VBAT

BUCKVBAT

AFEVBAT

OTPVDD

PWRIOVDD

(Q)SPI

1.8 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

NRF7002-QFAA-R7 Datenblatt(PDF) 43 Page - Nordic Semiconductor