RT1052/1064上电时序怎么设计

Arce

求教各位大佬们：
RT1052/1064的上电时序是怎么样的，网上有搜到IMX6UL的上电时序的帖子，但是不适用在RT1052/1064上，NXP的官方参考手册上太长了，而且对上电时序描述的也比较分散，没有找到对应的地方，请各位指点一下，应该按照怎样的时序给芯片上电，另外就是应该参考数据手册的哪一章哪一节

Arce

找到了，芯片数据手册
4.2.1.1 Power-up sequence
The below restrictions must be followed:
• VDD_SNVS_IN supply must be turned on before any other power supply or be connected
(shorted) with VDD_HIGH_IN supply.
• If a coin cell is used to power VDD_SNVS_IN, then ensure that it is connected before any other
supply is switched on.
• When internal DCDC is enabled, external delay circuit is required to delay the
“DCDC_PSWITCH” signal 1 ms after DCDC_IN is stable.
• Need to ensure DCDC_IN ramps to 3.0 V within 0.2 x RC, RC is from external delay circuit used
for DCDC_PSWITCH and must be longer than 1 ms.
• POR_B should be held low during the entire power up sequence.

啥也不会啦

帮顶一下