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Strooom · 2024-07-07

Previous I2C EEPROM chips had (eg) 3 address pins A2..A0, where you could hardware the I2C address. This allowed up to 8 devices on the same I2C bus in case you need more storage capacity.With the M24M01E this is no longer the case : the device can h...

Strooom · 2024-04-06

Most I2C EEPROM (eg M24M01E) need some time after a write command to transfer the written data into the internal EEPROM. During that time (eg max 3.5 ms) the device does not respond to I2C.My question is about the timeOut parameter in the HAL_I2C_Mem...

Strooom · 2024-04-06

For these EEPROMs there is a WP pin, which must be (active) low to enable write operations. I am driving this pin from an MCU, (ie. it is not tied to GND).Also these EEPROMs need some time after a write command to effectively write the data into the ...

Strooom · 2023-06-05

I am developing an application on the Seeed Lora-E5 module, which contains an STM32WLE5.Currently I am programming the device via the SWD interface, but for future firmware updates I want to use the UART, (this UART is available externally through a ...

Strooom · 2023-05-30

I use STM32CubeIde in a fairly standard way, only that I use C++ source on top of the C HAL code. When inspecting the build with Build Analyzer, I noticed A LOT of code which I think I never included.. (never sure what all the HAL files do..) for exa...

Strooom · 2024-07-08

Thank you, that answers my question.I decided to switch to ROHM BR24T1M where you can have 4 devices on the bus by setting A1..A2 pinsFor me this is a simpler solution, although a bit more expensive.

Strooom · 2024-06-17

Yes, the datasheet mentions it. It's easy to miss it, as I assumed that only the RTC stuff was not reset by the reset pin...

Strooom · 2024-06-17

Thanks for this explanation, I will investigate the datasheet to see of these debug registers are indeed not being reset by pulling RESET low and so need a power-on reset.I was clearly observing this with 1mA extra consumption on an STM32WLE5 and hav...

Strooom · 2024-04-06

Thank you. Of course I combine writes to consecutive addresses into page-writes, but when this address range spans several pages, I have to split it into multiple page writes.

Strooom · 2024-04-06

Sure, but the datasheet doesn’t answer the question, that’s the reason I ask it here.Attached is a screenshot of M24M01E-F datasheet. It shows some delay between last I2C databyte and rising WC, but no timing is defined…I could also try to find out w...

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How to program I2C address when multiple M24M01E on same I2C bus

Question about HAL_I2C_Mem_Write for accessing I2C EEPROM

Question about Writeprotect (WP) for I2C EEPROM, eg M24M01E

How to detect STM32 CubeMX Programmer from my application

Why does my build include so many 'unused' functions ?

Re: How to program I2C address when multiple M24M01E on same I2C bus

Re: Increased consumption in low power modes

Re: Increased consumption in low power modes

Re: Question about HAL_I2C_Mem_Write for accessing I2C EEPROM

Re: Question about Writeprotect (WP) for I2C EEPROM, eg M24M01E