BIT3.1 VS BIT3, We made the following optimization:
- Ipex adjusts the direction to prevent short circuit of the antenna caused by manual soldering
- Rxd0 increases the pull-up resistor to prevent floating interference commands
- Cs1 comes with pull-up pull-up according to 16 and 32 core boards
- The capacitors on the original back are placed on the front side, and the back plate is not punched in the future.
- CPURST_N RC reset circuit has been involved on the core board
- Pull-up resistor of WPS pin is moved to core board
- VDD_FLASH supply diode moved to the core board
- Relatively no change in BIT3 price
- Fully compatible
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We will produce it as soon as possible