BQ76PL536A-Q1: BQ76PL536A-Q1 Programming with nucleo microcontroller.

Hi Ioannis,

Ioannis Zeka said:

Firstly, i want to program it with nucleo-g474re microcontroller. Which are the steps that i have to follow?

To program the IC with your mcu, the IC can be communicated to with SPI. You will have to configure your MCU for four pins: CS, SCLK, SDI (MOSI), and SDO (MISO).  Your MCU's SPI communication should look like this:

The SPI timing should follow these specifications:

if you have the devices powered and are using multiple ICs, you can use the following process to address each IC:

The datasheet documents how you should format your SPI packets to write and read to registers. 

Ioannis Zeka said:

Is the 7V pulse in LDOD pins necessary and how can i apply it easily, without any additional external circuit?

As this is an old IC, and the EVM has the user input their own 7V signal, I recommend either using an external power supply that your microcontroller may turn on and off with a MOSFET or use external batteries that are in the range of 6.75 to 7.25 that may also be connected via a MOSFET. 

Ioannis Zeka said:

Can i use the REG50 pin for this purpose, or just to give a pulse from any microcontroller pin?

I do not recommend REG50 as it is current limited to near zero current.

Regards,

David