Hello g.... You cant read from the device - you can only program and verify what you have written. Search and read the "Protocol A" document on the Renesas website. Search the Renesas website for R20UT0694ED0100_RL78 and look at page 7 - it shows you the 14PIN E1 connections and you can map them to your PCB 4PIN connections. Hope this helps to get you started.
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