On an Attiny45 you can perhaps expect the following pinout which you can slowly remap back to the MM3 pinout diagrams. This is untested by me.
1 - N/A
2 - N/A
3 - GATE
4 - GND
5 - SQCK
6 - SUBQ
7 - DATA
8 - VCC (3.5V)
My original diagram salvaged from scrap notes:
N/A - 1 |----| 8 - VCC
N/A - 2 | | 7 - DATA
GATE - 3 | | 6 - SUBQ
GND - 4 |----| 5 - SQCK