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boards:k8048 [2014/12/13 11:58] darron |
boards:k8048 [2015/03/22 21:55] (current) |
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| ==== Velleman K8048 ==== | ==== Velleman K8048 ==== | ||
| + | <wrap right> | ||
| + | {{: | ||
| + | </ | ||
| - | == Socket Cross Reference == | + | The Velleman K8048 is long-standing board that incorporates a serial port programmer and experimenter' |
| + | |||
| + | Although the interface connects to the serial port, it doesn' | ||
| + | the RS-232 serial protocol and instead programming is performed using bit-banging. | ||
| + | |||
| + | |||
| + | === Serial Interface === | ||
| + | |||
| + | The bit-bang programmer has the following serial interface | ||
| + | characteristics (D-SUB-9). | ||
| + | |||
| + | < | ||
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| + | 1 2 3 4 5 | ||
| + | 6 7 8 9 | ||
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| + | </ | ||
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| + | Data output bits are sent through the DTR line and clocked on the falling | ||
| + | edge of RTS. | ||
| + | |||
| + | The Tx line is utilised to enable the application of the high programming | ||
| + | voltage on !MCLR/VPP and not for sending data bits. | ||
| + | |||
| + | Data input bits are read from the CTS line using the same clock as for | ||
| + | output with the data output line taken high for correct circuit operation. | ||
| + | |||
| + | |||
| + | === Socket Cross Reference | ||
| < | < | ||
| Line 43: | Line 84: | ||
| </ | </ | ||
| - | == ICSP == | + | === ICSP === |
| < | < | ||
| - | | + | SK3 |
| - | + | ||
| - | ICSP | + | |
| | | ||
| 5 4 3 2 1 | 5 4 3 2 1 | ||
| Line 57: | Line 96: | ||
| 4:PGD | 4:PGD | ||
| 5:PGC | 5:PGC | ||
| - | </ | ||
| - | < | + | |
| - | ICSP voltage | + | |
| - | -------------------------------------------------------------- | + | |
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| </ | </ | ||
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| + | === Resources === | ||
| + | [[http:// | ||
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