Ch341 Programmer Pdf Electronic Circuits Integrated Circuit Ch341a black edition voltage mod guide this document provides instructions for modifying a ch341 programmer to allow for dual selectable voltages of 3.3v and 5v. There are also components which do not operate at 3.3 volts and which must be supplied with 5 volts. this document will guide you to modify our programmer so that it will have dual selectable voltage, 3.3 and 5 volts. once finished: 3.3v modification.
Ch341 Programmer Black Voltage Modification Pdf Technology There are also components which do not operate at 3.3 volts and which must be supplied with 5 volts. this document will guide you to modify our programmer so that it will have dual selectable voltage, 3.3 and 5 volts. Learn how to safely convert your ch341a b usb flash programmer's 5v data lines to 3.3v without soldering using a simple jumper and pcb trace modification. With a sharp utility knife, cut the trace on the back of the programmer board. connect 3.3v output leg of the voltage regulator to pin 9 of ch341a ic bridging it to a corresponding trace at a nearby capacitor. This document describes a simple modification to the "black" ch341 programmer to allow the voltage to be selectable between 3.3v and 5v. currently, the programmer uses a 3.3v regulator, but some components require 5v instead.
Ch341 Programmer Black Voltage Modification Pdf Technology With a sharp utility knife, cut the trace on the back of the programmer board. connect 3.3v output leg of the voltage regulator to pin 9 of ch341a ic bridging it to a corresponding trace at a nearby capacitor. This document describes a simple modification to the "black" ch341 programmer to allow the voltage to be selectable between 3.3v and 5v. currently, the programmer uses a 3.3v regulator, but some components require 5v instead. This document provides instructions for modifying the 'black' ch341 programmer to allow dual selectable voltage outputs of 3.3v and 5v. the modification is necessary to prevent malfunctions with components that are not voltage tolerant at 5v while ensuring compatibility with those that require 5v. Fortunately, the mini programmer does have a separate 3.3 v regulator on the pcb. this only powers the socket for the spi flash, but with a small modification can be used to also power the ch341a. Documents and software related to the famous ch341a used in i2c spi flash programmers also called as bios programmers ch341 usb eeprom flash bios programmer ch341 en.pdf at master · semaf ch341 usb eeprom flash bios programmer. We need to lift pin 28 (vcc) to break it’s 5v feed and connect it to capacitor c4 (which also connects to pin 9 (v3)). then connect that to the middle pin on the ams 1117 (v out). doing so results in feeding pin 28 of the ch341a with 3.3v from the output of the ams1117 voltage regulator chip.
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