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Search: Posts Made By: fzabkar
Forum: Equipment Usage, Soldering, Techniques, and Reviews 11-27-2015, 09:21 PM
Replies: 60
Views: 41,097
Posted By fzabkar
Re: Group Buy: CH341A Programmer

This "Kindle mod" demonstrates how to convert a 0V-1.8V LVTTL signal into one that ranges from 0.6V to 2.4V:

http://img11.hostingpics.net/pics/228167mod18V.jpg...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 11-25-2015, 03:25 PM
Replies: 60
Views: 41,097
Posted By fzabkar
Re: Group Buy: CH341A Programmer

IIUC, manually specifying the IC part number has been disabled in the latest software release. AISI, this essentially cripples the software.

I examined the datasheet for one of the newly added...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 11-25-2015, 03:08 PM
Replies: 60
Views: 41,097
Posted By fzabkar
Re: Group Buy: CH341A Programmer

I'm thinking of cases where the patient PCB is dead and its "ROM" contents need to be transferred to a donor PCB. This frequently happens in HDD data recovery. In such cases the programmer would need...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 11-24-2015, 09:31 PM
Replies: 60
Views: 41,097
Posted By fzabkar
Re: Group Buy: CH341A Programmer

I'm wondering how this programmer can work with 1.8V chips. The CH341A datasheet specifies a minimum VIH voltage of 2.0V on its I/O pins.

As for devices in general, I would think that a generic...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 11-24-2015, 03:12 PM
Replies: 60
Views: 41,097
Posted By fzabkar
Re: Group Buy: CH341A Programmer

I would like a programmer that can program chips in-circuit. To this end I would need a circuit diagram for the PCB to satisfy myself that no pin is hardwired to ground or VCC. For example, if the...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 11-24-2015, 02:02 PM
Replies: 60
Views: 41,097
Posted By fzabkar
Re: Group Buy: CH341A Programmer

I'm not sure that I'd want to buy something from a person who scrapes the part markings off chips. Firstly it's petty, and secondly it's stupid. It's pretty obvious that the large IC is a CH341A and...
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