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nBOOT1 pin on STM32L073RZT6

VMeto.1
Associate II

‎2021-05-20 02:12 AM

Dear ST Community,

I am now designing a PCB with the STM32L073RZT6. Could you please advise where the BOOT1 pin is located?

Inside the datasheet, the only thing that I found is the statement:

Boot modes At startup, BOOT0 pin and nBOOT1 option bit are used to select one of three boot options: • Boot from Flash memory • Boot from System memory • Boot from embedded RAM

Best regards,

Varban

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CPINA
ST Employee

‎2021-05-20 02:26 AM

Hello,

Boot1 is not a physical pin, it is an option byte. Boot0 is still a external pin to control. For boot operation, boot0 and boot1 are considered, taking care about the physical pin for boot0 and the value of the programmed option byte on boot1.

Br

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VMeto.1
Associate II

‎2021-05-20 04:49 AM

Alright, thank you very much for the immediate and informative response, @CPINA.

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CPINA
ST Employee

‎2021-05-20 04:50 AM

​You are welcome

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