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TIDA-020004: Difference between AWR1642 and AWR 1843 for use with refernce design

Part Number: TIDA-020004
Other Parts Discussed in Thread: AWR1642, , AWR1843, AWR1843BOOST


Considering the reference design TIDA-020004: Automotive RFCMOS 77GHz radar module, what is the difference between the AWR1642 and AWR1843 chips?

My understanding is they are they same device, but the AWR1843 has more functionality enabled. Is this the case?

I would like to change the radar device on the reference design from AWR1642 to AWR1843 in order to access the added memory and secondary bootloader. What is required to use the AWR1843 with the reference design?