Interface and connectivity ICs

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Resolved! Will the STUSB4500 assert (pull low) the ATTACH pin if it is connected to a USB 2.0 port? For example in the case a USB 2.0-A to USB-C cable is used where there is no host USB PD communication on the CC pins and only 5V appears on VBUS.

Also, will the VBUS_EN_SNK pin get asserted (pulled low) in this case, allowing the power path to enable 5V from the USB 2.0 cable to power the device?

SPWF04S MQTTCONN Request Failed

Hi together,I'm using the NUCLEO-F401RE and NUCLEO-IDW04A1 trying to connect and publish to a MQTT Broker. Therefore i've edited the example HTTP_Request. Connecting to my WiFi-AP is working fine, but connecting to the Broker does not work. This is w...

FSchm.1 by Associate
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This question refers to the STUSB4500 reference schematic on page 26 (fig 10) of the datasheet. Will this design prevent current flowing from a secondary power source on Vsnk back to the USB connector if the secondary source's voltage is slightly higher?

In the case where USB power is first applied and a 20V contract established, the STUSB4500 would enable the power path to Vsnk as per usual. Then assume a 20.9V (for example) secondary power source is applied to the Vsnk output (say from a wall adapt...

ON/OFF external TCXO in sniff mode

Hello,I'm working on extrem low power radio with S2-LP transceiver. To obtain a very low consumption in rx mode i puted it in sniff mode. My design has external TCXO reference and when i left it always on all work fine, but if i set gpio to switch of...

EMont.1 by Associate II
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Clarification of GATT Write Procedures

I'm a bit confused regarding some nuances of the BlueNRG-2's BLE characteristic value write procedures' functions & events. Below is my understanding with a few questions.Bluetooth Core Specification v5.2 | Vol 3, Part G; 4 GATT Feature Requirements ...