In SX Microcontrollers, SX/B Compiler and SX-Key Tool, kd5dhu wrote:

[2]
Joshua,

If your using a SX48 Proto Board MCLR is already pulled up to VDD, so I would delete that connection. 

As for programming it without a resonator, it should program. I just tried with my[url=http://www.parallax.com/detail.asp?product_id=45170] Blitz [/url]and [url=http://www.parallax.com/detail.asp?product_id=552-00007]SXKey[/url] and had no problems, however it would not output any RS-232 (as expected).

Do you have any 3 pin resonators (4, 20, 50 MHz)?
[/2]

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