According to another article on the authors site, linked from this one, most of these microcontrollers are “write once”: https://cpldcpu.wordpress.com/2019/08/1

According to another article on the authors site, linked from this one, most of these microcontrollers are “write once”: https://cpldcpu.wordpress.com/2019/08/12/the-terrible-3-cent-mcu/ https://cpldcpu.wordpress.com/2019/08/12/the-terrible-3-cent...