About JCond.1

JCond.1 · 2021-12-09

If I'm interpreting Table 13 correctly (datasheet p 128), VDDA can be set to 0 volts provided VREF is not used. Similarly power pins related to USB can also be set to 0 volts. Looking in the datasheet p29,I just need to star-connect VDD_ANA, VDD_PLL...

JCond.1 · 2021-12-07

JCond.1 · 2021-12-10

Could you help us acquire some samples of STMPICA for prototyping? I wasn't sure which of the many sales departments to contact.

JCond.1 · 2021-12-10

From what I read, that is correct for STMF030R8. However, the STM32MP157A has a dedicated Vdd_pll pin. I'm not 100% on the POR, but the block diagram says Vdd_ana is involved with supply supervision.

JCond.1 · 2021-12-09

We're also exploring a power scheme consisting of discrete regulators. We notice that AN5256 "STM32MP151, STM32MP153 and STM32MP157 discrete powersupply hardware integration" provides good detail for such an approach. If we go this route, we would u...

JCond.1 · 2021-12-08

Our initial plan was to use to STPMIC1A. This is mainly because we are basing our design off the evaluation board STM32MP157A-EV1, which uses the STPMIC1A with DDR3L. Our main concern currently is that the DDR3L needs 1.35 V but Buck 1 is set to 1.1...

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I'm not using USB nor ADC/DAC on the STM32MP157A. Can I tie VDDA, OTG_VBUS, AND VDD3V3_USBxS to circuit ground (VSS)?

I plan to use an STPMIC1 to power a STM32MP157A with DDR3L. The only PMIC in stock is the STPMIC1E. For this particular case, will we have to pre-program the STPMIC1E before on a JIG tester or can it initially power the MPU which then programs the PMIC

Re: I plan to use an STPMIC1 to power a STM32MP157A with DDR3L. The only PMIC in stock is the STPMIC1E. For this particular case, will we have to pre-program the STPMIC1E before on a JIG tester or can it initially power the MPU which then programs the PMIC

Re: I'm not using USB nor ADC/DAC on the STM32MP157A. Can I tie VDDA, OTG_VBUS, AND VDD3V3_USBxS to circuit ground (VSS)?

Re: I plan to use an STPMIC1 to power a STM32MP157A with DDR3L. The only PMIC in stock is the STPMIC1E. For this particular case, will we have to pre-program the STPMIC1E before on a JIG tester or can it initially power the MPU which then programs the PMIC

Re: I plan to use an STPMIC1 to power a STM32MP157A with DDR3L. The only PMIC in stock is the STPMIC1E. For this particular case, will we have to pre-program the STPMIC1E before on a JIG tester or can it initially power the MPU which then programs the PMIC