1.8V SPI Flash base adapter :

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Spildit
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1.8V SPI Flash base adapter :

Postby Spildit » Sun Jan 04, 2015 7:34 pm

Some newer Seagate drives like 7200.12 and 7200.14 will use a 1.8V SPI flash to store the ROM code.

The Willem programmer can't program at a lower voltage than 3.6V, so it will not by itself support 1.8V chips and attempting to read/write a 1.8V chip on the Willem might even kill the chip.

A solution for it is to use a 1.8V SPI Flash base adapter. This is confirmed to work.

Unfortunately at the moment I can't find any place that sell those, so the only option (unless someone knows of a place selling those adaptors) is to made your own.

Another option is to buy a programmer that supports 1.8V SOIC8 SPI Flash chips.

For doing the adaptor for Willem here are the diagram and photos. Hope this can be useful to someone looking for a cheap alternative to program 1.8V SPI Flash chips :

ser_b1_sch.gif
ser_b1_sch.gif (9.54 KiB) Viewed 1252 times


ser_b1_pcb.GIF
ser_b1_pcb.GIF (5.87 KiB) Viewed 1252 times


ser_b1_pic.jpg
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