Interface and connectivity ICs

Ask questions and find answers on connectivity ICs, focusing on protocols and I2C challenges on STM32 Nucleo boards and BlueNRG products.

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Forum Posts

S2-LP automatic ACK

I’m testing S2-LP sub-GHz transceivers in stack packet mode. I’m encountering an issue where the sequence number in ACK packets sent by the receiver doesn’t seem to be populated correctly. If I’m not mistaken, when automatic acknowledgment is request...

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pelgrimo by Associate
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Chip ID

Posted on March 22, 2018 at 05:25I have an interface product have some chips carry ST logo, but I can not find anything use the Chip ID. They are EZ026 and EZ030. Can anyone help to identify what is these chips? Here is the picture shows the chip.Th...

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Resolved! STKNX Linear regulator dropout

Hi,I would like the DC/DC converter of STKNX to make 5V.Also, I want the Linear regulator to make 3.3VBecause of global efficiency, I wanted to power the linear regulator with the 5V output of DC/DC converter.I'm surprised that the datasheet specifie...

potting BLUENRG-M2SP and BLUENRG-M2SA

Hello,I hope you are well.I am using your bluetooth modules with chip antenna “BLUENRG-M2SA” and PCB antenna “BLUENRG-M2SP”.I'm going to put the 2 modules in the potting ? is there an influence of potting on the characteristics (range, transmission, ...

ljm by Associate III
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X-NUCLEO-BNRG2A1 UART Bootloader Mode

Hello, Following AN4872  & UM2667 I did the following: - Connected J15(Force DIO7 High).- UART-Connection is like(Beside GND and Vdd):    Nucleo-Board(F401RE)   <----------------------->  X-NUCLEO-BNRG2A1       PA9(UART1_Tx)           <--------------...

AElgh_0-1736432060174.png AElgh_1-1736432143666.png AElgh_3-1736432241818.png
AElgh by Associate III
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Resolved! M48T18-150PC1 Timekeeper

I have a circuit card that uses the M48T18-150PC1 Timekeeper SRAM, and the battery died. I replaced the part but the settings did not save once power was cycled. A second part was used with the same result. Looking at the date stamp, (412) tells me I...

BobW777 by Associate
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