Wisp628 is designed to be used as an in-circuit programmer only, hence no socket is provided for the target chip. `Why use such a limited design`, you might ask, `an ex-circuit programmer with a ZIF socket can do the same things and more!` You are partially right, but consider the way you would use and ex-circuit programmer for development: take the chip from its circuit, put it in the programmer, program it, take it from the programmer, put it in its circuit, test.
Wisp628 - schematic

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