About tatsuya

tatsuya · 2023-03-19

Hi team,I'm trying to build my own Linux distribution for "STM32MP151AAA" now.https://wiki.st.com/stm32mpu/wiki/OpenSTLinux_distributionAre there only the following two images that I can select by referring to the above URL?Is the difference betwee...

tatsuya · 2022-12-15

Hi team,I'm developing a PCB that implements STM32MP151AAA3.I think VBAT is a backup power supply for RTC, so I'm planning to supply power to VBAT from a button battery.Will the RTC be reset when this button battery is changed?If it is so, is there a...

tatsuya · 2022-12-06

Hi team,I'm developing a our PCB equipped with STM32MP151AAA3.Are the following pins named "Unused" okay to remain open?VDD_UnusedVDD1V2_UnusedVDDA1V8_UnusedBest regard,

tatsuya · 2022-12-06

Hi team,I am developing our PCB referring to the "STM32MP157 EVAL"(MB1263-C04 Board schematic).https://www.st.com/en/evaluation-tools/stm32mp157f-ev1.html#cad-resourcesIn the datasheet, VREF+ looks like a voltage output pin, but why is power supply...

tatsuya · 2022-12-06

Hi team,I am developing the board referring to the "STM32MP157 EVAL"(MB1263-C04 Board schematic).https://www.st.com/en/evaluation-tools/stm32mp157f-ev1.html#cad-resourcesSTM32MP157 EVAL has an SD card slot and eMMC as storage media.I think the sample...

tatsuya · 2022-12-18

Hello Peter-sanThank you for the reply.> One way to bridge such interruptions of VBAT is indeed a capacitor in parallel with the battery, the size of which depends on the time to be bridged.When battery output is 1.8V and it needs to be replaced.In c...

tatsuya · 2022-11-16

Patrick-sanThank you for useful informations.> For your own PCB, unless you are expert on DDR routing, we recommend to stick (or reuse as much as possible) the routing examples provided together with AN5122 (STM32MP1 Series DDR memory routing guideli...

tatsuya · 2022-11-15

Hi PatrickF-sanThank you for your reply.> A2: OTG connector is required as USB connection to STM32CubeProgrammer as flashing is done using USB (and not STLINK unlike STM32 MCUs).In this environment, I think the SD card is flashed.In case flashing eMM...

tatsuya · 2022-11-14

Hi Olivier-san,Thank you for your reply.Would it be okay if the I2C4 setting could be set up in STM32CubeMX like an attachment?Best regards,

tatsuya · 2022-11-13

Hi Olivier-san,Thank you for your reply.> Yes, all DDR related power supply are managed in TF-A."STM32MP151AAD3T" has six I2C I/Fs(I2C1, I2C2, I2C3...)So, Will any CH be fine? (Can I select it with TF-A?)Best regards,

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User Activity

Linux distribution for "STM32MP151AAA"

About VBAT battery replacement

About handling pins named "Unused"

About "VREF+" pin

Necessity of eMMC

Re: About VBAT battery replacement

Re: About DDR Bitswapping

Re: About the functions of connectors

Re: About PMIC setting

Re: About PMIC setting