TCAN4550-Q1: Review the schematic design

FENG FNED

Prodigy 10 points

Part Number: TCAN4550-Q1
Other Parts Discussed in Thread: MSP430FR6989, MSP-EXP430FR6989, TCAN4550

Could you please review the schematic design and make some suggestions?

And,If not using the GPIO1, GPO2, WAKE,INH, and nWKRQ pins，should we connect resistors such as 0 ohms, 100K？

If using the RST pins,should we connect 0 ohms or 4.7K?

21 天前

0 FRANK1 21 天前

TI__Intellectual 1560 points

Thank you for contacting TI China E2E forum and choosing our products as part of your solution.
Regarding your query, please review our TCAN4550-Q1 evaluation board design schematic in page 13 and compare with your design.
www.ti.com/.../sllu281a.pdf

For unused pin. pls refer to the following post.
All of these pins can technically be left floating, but I'd recommend connecting RST to GND if it is truly not being used to avoid any unwanted device resets from noise coupling to the pin.
e2e.ti.com/.../tcan4550-q1-rst-gpio1-gpio2-inh-nint-and-nwkrq-unused

If using the RST pins, pls connect 100Kohm resistor to GND.
Thanks.

0 FENG FNED 20 天前

Prodigy 10 points

Thank you for your answer. I know that TCAN4550-Q1 evaluation uses the MSP430FR6989 MCU and I looked at the product pages of TCAN4550-Q1 and MSP430FR6989 respectively,but i did't found the schematic for MSP-EXP430FR6989 connect with TCAN4550-Q1. I only found the TCAN4550-Q1 evaluation schematic.Can you provide me with more messages and resources？