For sure the DCDC high voltage part is not needed; VDD control is also not essential.
In case you use an external 3.3V regulator you need to reconfigure the device so that it doesn't use the internal one; and you have to connect VUSB to 3.3V.
The regular 18F2550 should be fine as well.
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Hello All?
I have toruble to read\write PIC18F14K50 with OP v 9.1
When i start this string:
./op -d 18F14K50 -ee -s _bootloader.hex
I got this message:
root@md:/usr/local/op_v9# ./OP_RUN
Programmer detected on /dev/usb/hiddev0
Firmware version 0.9.0
Hardware ID: 0.0.1 (18F2550)
USB voltage too low (VUSB<4.5V)
USB voltage too low (VUSB<4.5V)
HV regulator error
Programmer detected on /dev/usb/hiddev0
Firmware version 0.9.0
Hardware ID: 0.0.1 (18F2550)
3.3V Regulator not detected
I tryed to program PIC18F14K50 by the LVP 3v3 power scheme from the
Flashsh Memory Programming Specification from Microchip. (Figure 2-3)
Would You like to help me understand my error?
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Hello!
I would like to build a 3,3V only micro-wire programmer based on OpenProg.
Can I omit RC0, RC1 and RC2 circuits and then add a voltage regulator after the PIC?
Should I consider the LF (2 - 5.5V) version of PIC18F2550 and voltage regulator at the input of the PIC?
Any advice will be appreciated.
Last edit: Anonymous 2016-06-07
For sure the DCDC high voltage part is not needed; VDD control is also not essential.
In case you use an external 3.3V regulator you need to reconfigure the device so that it doesn't use the internal one; and you have to connect VUSB to 3.3V.
The regular 18F2550 should be fine as well.
View and moderate all "Open Discussion" comments posted by this user
Mark all as spam, and block user from posting to "Discussion"
Hello All?
I have toruble to read\write PIC18F14K50 with OP v 9.1
When i start this string:
./op -d 18F14K50 -ee -s _bootloader.hex
I got this message:
root@md:/usr/local/op_v9# ./OP_RUN
Programmer detected on /dev/usb/hiddev0
Firmware version 0.9.0
Hardware ID: 0.0.1 (18F2550)
USB voltage too low (VUSB<4.5V)
USB voltage too low (VUSB<4.5V)
HV regulator error
Programmer detected on /dev/usb/hiddev0
Firmware version 0.9.0
Hardware ID: 0.0.1 (18F2550)
3.3V Regulator not detected
I tryed to program PIC18F14K50 by the LVP 3v3 power scheme from the
Flashsh Memory Programming Specification from Microchip. (Figure 2-3)
Would You like to help me understand my error?
Apparently you're not using the 3.3V expansion board that is required to program that device.