|
Thanks for your reply.
I connected pin 9 straight to ground. Measuring pin 30, ALE was a saw tooth like shown above for Pin 6 of S890 but later on it was a steady ~Vcc.
Pin 33 and 34 to the (not connected) ICV showed no irregular signal as it did before.
Input signals to uC 8051 AD0 to 7 were all steady voltages for each, no repetitive signal.
What should I be looking for exactly?
|