Changes

| U1-U2

| U1-U2

| SOIC-8

| SOIC-8

| M?r?ne MB??660C  1940

| MicroOne ME7660C 1940

|-

|-

| U3-U6

| U3-U6

|}

|}

U1 and U2 have their markings partially ground off. The company logo appears to start with a cursive M and end with a cursive e, and it might be a LMC7660/ICL7660/TC7660/TL7660 charge pump.

U1 and U2 have their markings partially ground off. The ME7660C is functionally equivalent to LMC7660/ICL7660/TC7660/TL7660 charge pumps.

 

[https://cdn.datasheetspdf.com/pdf-down/M/E/7/ME7660C-MicroOne.pdf MicroOne ME7660C Datasheet]

The board has edge soldered connectors similar to these:

The board has edge soldered connectors similar to these: