Hi
I have two questions about hardware design for i.mx8m mini , please halp me:
1) In 8MMINILPD4-EVK-DESIGNFLES.ZIP, We need to use CPU RTC function on our project , how to connect the PMIC(BD71847MWV) if we use the coin-battery(3V), or can't support that ........
2) about the power configuration for CPU , if we set power NVCC_ECSPI is 3.3V, powe NVCC_UART is 1.8V,(as figure 1), then the level voltage is 3.3v of the ECSPI signals ,right? but we change to UARTs from ECSPIs in IOMUX configuration, what is the level voltage of the UARTs now. (as figure 2)
Solved! Go to Solution.
Hi Bin
1. one can look at PMIC(BD71847MWV) datasheet for supported functionality
(seems there is no coin-battery option)
Avnet: Quality Electronic Components & Services
2. level voltages are defined by balls "Power group" (not signal name) described in
Table 64. i.MX 8M Mini 14 x 14 mm functional contact assignments i.MX8MMini Datasheet
https://www.nxp.com/docs/en/data-sheet/IMX8MMCEC.pdf
Best regards
igor
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Hi Bin
1. one can look at PMIC(BD71847MWV) datasheet for supported functionality
(seems there is no coin-battery option)
Avnet: Quality Electronic Components & Services
2. level voltages are defined by balls "Power group" (not signal name) described in
Table 64. i.MX 8M Mini 14 x 14 mm functional contact assignments i.MX8MMini Datasheet
https://www.nxp.com/docs/en/data-sheet/IMX8MMCEC.pdf
Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
thanks for your response...........