![]() ![]() ![]() It looks there is a resistor after Pin 9. Asked 5 years, 11 months ago.Īctive 5 years, 10 months ago. The best answers are voted up and rise to the top. If Pin 9 is tied to the CPU, you may then be in the realm of trial-and-error to see how to control that pin. If it can be controlled, the chip can be re-programmed. Based on the data sheet you posted, you need to see if Pin 9 is tied directly to ground, or can be controlled by the CPU. Or this can be found only via trial and error method?ĬPU specification is not available. Reverse Engineering Stack Exchange is a question and answer site for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.
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