CC1310: Share UART RX pin with SCL or SDA pin

Rustem Avkhadiev

Part Number: CC1310
Other Parts Discussed in Thread: HDC2010

Hello!

My design based on cc1310 4x4 + HDC2010, and i'm lack of pins accessible in Sensor Controller.

I will use UART RX pin only once, then i program the chip. So can i share this pin with SCL or SDA pin connected to HDC2010. In other words, can i connect cc1310 DIO1 to SCL or SDA pin of HDC2010, and then successfully program cc1310 by UART?

Here is my schematic:

Schematic TC.pdf

over 6 years ago

0 YiKai Chen over 6 years ago

Guru 735685 points

If you mean to serial boot loader to update FW from UART and share the pin with I2C in your application, it should be no problem.

0 Rustem Avkhadiev over 6 years ago in reply to YiKai Chen

Genius 3550 points

Hello! Thank you for the answer!
Yes, i mean serial bootloader. Can i share UART RX with any of I2C pins (SCL, SDA)? They both are tied to VCC with 10k resistors.

0 YiKai Chen over 6 years ago in reply to Rustem Avkhadiev

Guru 735685 points

I see no problem on this.

Sub-1 GHz

Sub-1 GHz forum

CC1310: Share UART RX pin with SCL or SDA pin