In SX Microcontrollers, SX/B Compiler and SX-Key Tool, robotworkshop wrote:

Hello Dan,

The SX-Blitz will only allow you to program the SX chips (which is fine for most projects)

For the extra $20 the SX-Key will allow you to program the SX chips (like the SX-Blitz) and it will also allow you to do in circuit debugging of your program (with a few restrictions).  In order to perform debugging you need to unplug any external clock sources (resonator, TTL oscillator) so the SX-Key can generate the clock or you won't be able to enter debug mode.

If you only want to program the chips and don't need the debugger then the SX-Blitz if just fine.

Robert

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