Interface and connectivity ICs

If ST's RTC chip (m41st84w or M41ST85W) has a failure mode to provide invalid RTC data, just like 2022(Year)-18(Month)-49(Date)? If have, what's the failure rate?

BLUENRG devices firmware upgrade setup

Please help me with the setup required to flash the latest firmware version for the BlueNRG devices. I would request your help to explain me the setup required for both the usecases exlained below -There are some devices we have in stock and they nee...

STPM32 giving the value of 0x00 Reg on every request.

Protocol Used : SPISPI Master : ESP32SPI Slave : STPM32 I am trying to interface with STPM32 using SPI interface.Whenever I make any read request I am getting the value of 0x00 register again and again which is 0x040000A0.As per the datasheet the int...

ST4SIM-200M cannot register ICCID at Truphone.

Hello,we purchased two ST4SIM-200M eSIMs for testing but we have trouble activating them. In the truphone portal when I enter their ICCIDs, I always receive "This ICCID has already been activated". They should not be activated, they are brand new not...

SPIRIT-1 not always able to receive

Dear ST Community,I have the following test setup:- 1x SPIRIT-1 transmitter (reads a pin from a STM32 MCU and modulates it over the radio)- 2x SPIRIT-1 receivers (receive the pin state and pass it to the MCU)Expectation: Both receivers should receive...

Hello, Does anyone know of available stock or alternatives for VN808cm-e, octal source driver. We are having great difficulty finding any stock for our main control board which uses two of these drivers.

How does UART work without the HAL layer ?

Title shortened in accordance with community guidelines.Original title: "How does UART work without the HAL layer? Does the shift register clear itself once it has transmitted its data? And what's the timing I need to have?"Some context, I'm using a ...