Hello everyone,
I am working with BQ79600 IC for communication between Master IC: NXP and BMS IC: BQ79656. Previously, the circuits were designed to support SPI mode of communication and now I am trying to switch to UART mode of communication.
Image 1:
From the above image (taken from datasheet) the necessary changes would be to ground the SCLK, nCS, nUART/SPI pins and connect CVDD pin to 0.22uF capacitor and ground it.
The below image is for SPI mode of communication from my current schematics.
Image 2:
With the above mentioned changes in datasheet image I am planning on doing the below modifications (highlighted in Black for UART and Red for disconnections) where Tx_M and Rx_M are the master Tx and Rx pins.
Image 3:
At the same time there is also a table in datasheet that says to short CVDD to BAT pin when supplied with 5V regulated supply.
Image 4:
Since I am using a 5V regulated voltage supply, can someone please confirm whether the changes highlighted in my schematics are okay or are there still some modifications to be done in the schematics like should I isolate the CVDD pin with 0.22uF capacitor to ground or short it to BAT pin?
Thank you,
Damodhar J.
