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This is a print head, the back side of the contact plate.
IC is not connected to the nozzles (except for Vin and GND).
Each of the unrecognized leg IC has a contact on the contact plate.
Since the introduction of memory to the print head, it's always been microwire.
Preceded had memory...
What I know:
- it is EEPROM memory
- dimension (main body): 3 x 3 x 0.5 millimeters
- markings: TO2 HG
What I guess:
- memory size: 256 Bytes
- Vin: 3.3V
What I want to know:
- interface/pinout (I2C, Microwire or something?)
Its predecessor had Microwire EEPROM (Vin, GND, SC, CS, DI, DO)...
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