Jdm Programmer Software
PICPgm is a free and simple PIC Development Programmer Software for Windows and Linux. I want to program a PIC microcontroller using JDM programer.I have WINPIC 800 software.But it doesn't works in WINDOWS7.Is there any alternative software for WINDOWS7?
USB PIC Prototype Programmer PIC JDM Prototype Programmer 1001 In need of a programmer for PIC micro controllers I decided to build my own one. This programmer has been designated as 'PIC JDM Prototype Programmer 1001' because it is very likely the 1001st PIC programmer:-) The programmer is basically operating as a. Any programming software that is compatible with JDM hardware might be used for programming. The major advantage over typical JDM programmers is that it connects to the programming host via USB and not via an RS232 interface. USB has the advantage that it delivers regular power along with data transmission. Though, existing programmers show that the power can be taken with some tricks from the RS232, but I do not like that. Another advantage of a USB connection is that most new notebook computers do not provide an RS232 interface any longer.
This programmer is specifically designed for in-system programming, or 'In-Circuit Serial Programming' (ICSP) as it is designated by Microchip. The PIC to be programmed is already soldered into the target system.
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Features. 5-wire programming interface: MCLR/VPP (programming voltage) VCC (regular +5V supply voltage) GND (ground) PGD (programming data) PGC (programming clock) All these wires are to be directly connected to the PIC to be programmed. There is no additional supply voltage required.
The PIC programming voltage (around 13V) is generated on-board using a small switching regulator. 5V power supply voltage can be delivered by the programmer or by the target system itself. There is a jumper used to determine whether the programmer feeds the +5V or not. There is no contention when +5V is provided by both the programmer and the target system. A (green) LED signals whether the PIC supply voltage is around +5V.
Comput…
A (red) LED indicates whether the PIC programming is in progress. A second jumper can be used to keep the PIC in a reset-state when it is not being programmed. This is important when the PIC to be programmed is normally used with a low-voltage supply (e.g. As the PIC needs to be programmed at VCC=+5V which is normally supplied by the programmer, the PIC would start executing code at +5V immediately after VPP is removed. As a result, some IO-pins might be programmed to output a high-level (i.e.
5V in this moment). This could hurt other circuitry attached to the micro controller when it does not have 5V-tolerant inputs. Although it is not a feature: Following the Microchip terminology, the programmer is designated as prototype programmer. This is because the PIC is verified at VDD=+5V instead of +2V as suggested by Microchip. It would not be a big deal to include such a VDD switching. However, the RS232-based JDM programmer cannot support this feature due to lack of control lines.
As a result, most of the existing PIC programming software does not support this as well. Nevertheless, the programming procedure is working flawlessly so far. Operational Principle The core component is an USBSerial converter chip (FT232BM) from. The according driver provides a serial interface functionality and makes the USB connection transparent. This allows the use of existing programming software without any modification.
Computer Scientist
The programming voltage (approx. 13V) is generated using a small switching regulator circuitry. Some other circuitry is needed for programming voltage switching etc. Requirements for the Target System A few precautions need to be taken in order to guarantee a flawless operation of the target system itself as well as its interoperation with the programmer. PGD and PGC As long as those pins of the PIC are not used by the target application there is nothing to take care for. In the other case the designer needs to be aware that those lines will carry 5V levels during programming.
Also it has to be ensured that both lines are not actively driven by other circuitry during programming. VCC Application VCC = 5V When the target system is operating at 5V, there are no special precautions necessary. In this case the target system should be powered by itself during programming. The jumper used to provide power from the programmer should not be set. When the whole application draws only a few mA it might be safely powered from the programmer. Application VCC.