CC3235MODSF: Using different UART0 pi for flash interface

O.H

Part Number: CC3235MODSF
Other Parts Discussed in Thread: UNIFLASH

Hi experts,

Is it possible for UniFlash to use (for example) pins 10 and 4 of UART0 instead of pins 46 and 47 of UART0 to program the flash of CC3235MODx?

I could not find the reason why the 46 and 47 pins should be used in the documentation. Just in case, I would appreciate it if you could tell me if it is possible to use other pins for UART0 and if not, why.

Basically, we plan to comply with the following document.

CC3235MOD Production Line Guide:4.3 Configuration of the UART"
CC3x35 Hardware Design Checklist (Rev. A):"CC3235MODx & CC3235MODAx" tab

Best regards,
O.H

over 5 years ago

+1 Jan D over 5 years ago

Guru 80825 points

Hi,

You cannot use other UART pins, because pin numbers are hardcoded inside ROM bootloader.

Jan

0 Sarah P over 5 years ago

TI__Mastermind 38980 points

Hi O.H,

Jan is correct. Pins 46 and 47 are required by the bootloader for programming over UART, as show in section 4.3 of the production line guide. Application pin configuration does not take place until after the device has booted.

Best regards,

Sarah

0 O.H over 5 years ago in reply to Sarah P

Mastermind 7270 points

HI,

I understood. Thank you both for your support.

Best regards,
O.H

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CC3235MODSF: Using different UART0 pi for flash interface