About Central SUPPORT

Central SUPPORT · 2019-10-14

I am working on a project using a few STUSB4710 and some STM32F0 family microcontrollers. I am looking for details about the registers of the STUSB4710. In the datasheet I can find only the I2C register map and the details of the PDO registers but no...

Central SUPPORT · 2019-10-04

Hi, I am currently implementing software/firmware for the PowerSTEP01 chip and discovered a inconsistency in data sheet https://www.st.com/resource/en/datasheet/powerstep01.pdf. For parameter INT_SPEED (section 11.1.11 in datasheet) the equation does...

Central SUPPORT · 2019-10-02

For data exchange between ST25DVxx with an Android smartphone we would like to use NDEF (NFC Data Exchange Format) messages. Will it work? NOTE: This question and answer originated from a customer support case which was handled by us. We regularly r...

Central SUPPORT · 2019-09-26

We are planning to use three L7987 DC/DC switching regulators on our interface module. All L7987 should be synchronized and should operate with the same frequency set with an external resistor on the pin FSW.In datasheet https://www.st.com/resource/e...

Central SUPPORT · 2019-09-19

This driver is used (2 per module) in a fairly new product we have been shipping 10k modules in past 6 months. Until recently, we have had no driver failures. Now we have two returns from a customer with a driver failure on each.On one unit, one chan...

Central SUPPORT · 2019-10-14

Please see attached PDF. It contains the STUSB4700 register map plus description of each bit. In fact, it also applies to STUSB4710 which is using a subset of the 4700 refgister set. Both analog parts are different, but the digital part is shared bet...

Central SUPPORT · 2019-10-04

You are right, thank you for raising this issue. In fact, there is a typo in datasheet. The correct formula is: i.e. steps/s = INT_SPEED × (2^−26) ÷ (250×10^−9) Same mistake applies also to L6480 datasheet :persevering_face: , but at least L6470 data...

Central SUPPORT · 2019-10-02

Yes, no problem if you plan to use ST25DV04 only.But there is a restriction if memory sizes of 16kbits (i.e. ST25DV16K) or larger are used. In this case the magic number in CC container is set to “E2h�? for two-byte address mode. In fact, Android ver...

Central SUPPORT · 2019-09-26

Please note that for new STM32 products, it is recommended to use STM32CubeProgrammer.

Central SUPPORT · 2019-09-26

The text "so the frequency pre-adjustment with the same resistor on the FSW pin, as suggested above, is required for a proper operation" refers to the preceding paragraph that describes how to compensate the attenuation of the sawtooth ramp and thus ...

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STUSB4700/4710 I2C register details

Calculate stepss for PowerSTEP01 (and L6480)

ST25 NDEF messaging with Android

How to sync multiple L7987 DC/DC Switching Converters

Field failures of an VND5160AJ-E application

Re: STUSB4700/4710 I2C register details

Re: Calculate stepss for PowerSTEP01 (and L6480)

Re: ST25 NDEF messaging with Android

Re: Source code included in STSW-STM32080 package for STM32 DfuSe utility

Re: How to sync multiple L7987 DC/DC Switching Converters