If anyone knows of a of repo that has the firmware for this device, then please link-in below. There is also a five hole feature connector which is likely used for flashing the PIC in some anonymous Chinese factory/garage/dunny. I have no idea if this clone fully supports these.
The official (expensive) Altera USB Blaster Cable configures the connector pins in three operating modes AS, PS and JTAG.
This maintains the correct voltage level on the target equipment side. Power to the LVC244A is provided via pin 4 of J1 by the target equipment, designated as target voltage TGRT (VCC). The LVC244A is a 5 volt tollerant level shifter that connects direct to the target equipment via the 2x5 10pin connector (J1). This clone aquires the Altera USB vendor (0x09FB) and product (0圆001) ids. In theory, the PIC18F14K50 provides the USB connection and decodes the Altera protocol. Note the ALTERA logo on the PCB? Altera/Intel it is not. Other than, these dongles work really slow and won't reliably connect. Searching the interweb, I was unable to locate any information about this specific clone. So that's why it's really cheap huh? Just a fancy 12MHz crystal. No voltage regulators, no fancy blocking diodes, no flux capacitors. This incarnation uses the PIC18F14K50 with a LVC244A level shifter. So I wondered what exactly is inside? There are a few implementations that go inside these identical "revision C" boxes a popular type uses STM chips, others use some indeterminate DIP packaged micro-controller. You know, the ones that spam ebay and ali-express when you search for a "JTAG programmer". "Altera Mini USB Blaster Revision C Clone using the PIC18F14K50" I have one of these dirt cheap Altera Mini USB Blaster clone dongle things.
0 kommentar(er)
