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| 16f877 Central Unit (página 2/2) |
|
- page last
update january 2009 - (página
en castellano) |
| In
the design of "PAD-to-Midi", I included the ICSP LVP programmer
designed by Byron A. Jeff so I could have the option to programme the
microcontroller without removing it from its circuit. The schematic of
the LVP programmer is available on www.finitesite.com/d3jsys/.
For the smaller PIC 16F628, with has only 18Pins, I have built a circuit
using a schematic of Bojan Dobaj, the P16PRO:www.picallw.com.
This circuit works very well. |
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| ICSP LVP In Circuit Low Voltage Programmer |
| The ICSP LVP programmer (In Circuit
Serial Programmer, Low Voltage Programmer) or low voltage in circuit
programmer http://finitesite.com/d3jsys/
was designed by Byron Jeff. For the necessities of this project the
circuit is slightly modified. (See electronic schematics above). Using
free-software WinPic for Windows http://www.qsl.net/dl4yhf/winpicpr.html
the ICSP works without any problem. The file “LVP.INI” has
to be copied to the subfolder "interfaces" of the WinPic program.
The LVP.INI is included in the ZIP file that can be downloaded from
this page. The AC terminator with C1 (100pF) and R2 (100 ohm) is important.
The resistance, R5 (390 ohm) has a pull down function at the PGM (Pin
36, 16F877A or Pin 4, 16F628A) and stabilises the Pic’s after
they have been programmed. |
| LVP.INI file to be copied into the subfolder "interfaces" |
| [Info]
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