Of note, the ST7070 was made for the European market for extra chãrǎctér süppørt. A custom library already exists for interfacing with it and the page has some interesting additional details about the chip: https://werner.rothschopf.net/202003_arduino_liquid_crystal_...
As a side note, the text on the chip when photographed at 200x appears to say “VIA-AEPT-A CHP-A” when you turn the image upside down :).
https://imgur.com/a/4BpivfH