STM32L0 in UFQFPN32 with HSE

soren · ‎2015-08-15

Posted on August 15, 2015 at 11:08

Hi, I am looking for an STM32 which has:

- A 5x5 mm package which can be used on a 2 layer board (that excludes BGA, I suppose)

- 32 or more pins

- Ultra low power

- DAC

- Crystal main clock

In the parametric selection, that leads me to the STM32L052.

BUT what is this, the HSE is featured in the datasheet but is not wired to pins? Hmm.

The STM32L062 seems to be the same thing, except is has an encryption feature which I can ignore. That has these pins in the datasheet (Figure 3):

PC14-OSC_IN

PC15-OSC32_OUT

and does not feature a HSE. The PC14-OSC_IN must be an error..?

Have I overlooked something suitable for these requirements?

Regards, Soren

#hse #stm32l0

Tesla DeLorean · ‎2015-08-15

Posted on August 15, 2015 at 16:49

No PC14/PC15 are OSC32 pins

Looks like you'd need 48/64 pined parts to get the HSE OSC

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soren · ‎2015-08-16

Posted on August 16, 2015 at 10:45

Thanks for the confirmation clive1.