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LoRa with builtin controller?

Hi all.
I want to use LoRa in 433MHz, using LoRaWan.

I search and find out RA-02 That based on SX1278.

  1. Is there any LoRa chip that including MCU so I will not need to buy separate MCU and connect to LoRa using SPI?

  2. What is the difference between SX126x and SX1278? For using LoRaWan ,low power consumption and Long range?

Thank you.