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mark_blackburn's avatar
mark_blackburn
Icon for New Contributor rankNew Contributor
2 years ago

Adaptor for USB Blaster II to USB Blaster header

We have a board designed for the original USB Blaster. The connector for the USB Blaster II is slightly larger. Is there an adaptor available that would allow us to connect the USB Blaster II into a ...
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_AK6DN_'s avatar
_AK6DN_
Icon for Frequent Contributor rankFrequent Contributor
2 years ago

Not sure what you mean by "slightly larger"?

Was your original board built with a 2mm spacing 2x5 header instead of a 2.54mm (100mil) spacing header (I have seen this)?

Both the original USB Blaster and the newer USB BlasterII use a standard 100mil spacing 2x5 header.

If it is shrouded, it must have the polarity notch in the correct orientation.

Unshrouded also works, just need to insure pin1 orientation of connectors align.

I have the data sheets all the way back to the ByteBlasterMV from 1999 and the ISP connector is always
listed as being a 2x5 100mil standard female connector that is 250mil wide by 700mil long.

Same dimensions for all the ByteBlasterXX and USBBlasterXX variations.

You may need to send a photo of what does not fit.

FvM's avatar
FvM
Icon for Super Contributor rankSuper Contributor
2 years ago
Agree with the above. All Intel and third Party dev boards as well as our own design have a JTAG connector fitting both USB Blaster versions. It's true that the USB Blaster version with FPC cable uses a connector without polarity notch, never noticed it would be smaller than standard 0.1" connector.
Anyway, there are male IPC connectors on the market, you can make your own adapter.