| T O P I C R E V I E W |
| Giants |
Posted - 03/10/2014 : 01:13:43
Hi
I have a GQ-4X programmer (H/W Re: GQ-4X Re-2.20 (SW Re. 6.29)
Impossible to programme a Eprom 27c256
I don't understand something...
For programm this chip, It's need vpp to 12.5V
But, USB give me 5V or 6V max
And if i user a external alimentation, you write on botom on the GQ-4X 9V 200ma
AND, in this GQ-4X they are a 7805 regulator in input
and, in your product information, you say :
..Vcc supported among: 3.6V, 5V, 5.5V, 6.5V
...On-Board MCU for stable performance & automatic/scriptccurate voltage control
SO, for me it's impossible to this progr. to work with 12.5V that is necessary for programm old chip like 27C256
It's normal ?
thks a lot |
| 1 L A T E S T R E P L I E S (Newest First) |
| ZLM |
Posted - 03/11/2014 : 10:40:58
GQ-4X support 12.5 programming voltage EPROMs. It has internal step-up voltage circuit. It can provide up to 25V programming voltage.
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