ITP
Advanced Member level 4
at89c2051 probelm
Hi,
I request your help for this strange problem.
I am using At89C2051 chip for an application. I have connected 10uF across VCC and RESET pin. And 10MHz clock is connected to XTAL1 pin, XTAL2 pin is left open. This 10MHz clock is derived from a 100MHz master clock using CPLD.
My problem is that when I power up the ckt its port(P1) pins shows high frequency oscilations during the reset cycle.This shows some junk characters on the lcd, connected to that port, while on power up.
What could be the problem.
Thanks and regards
Itp
Hi,
I request your help for this strange problem.
I am using At89C2051 chip for an application. I have connected 10uF across VCC and RESET pin. And 10MHz clock is connected to XTAL1 pin, XTAL2 pin is left open. This 10MHz clock is derived from a 100MHz master clock using CPLD.
My problem is that when I power up the ckt its port(P1) pins shows high frequency oscilations during the reset cycle.This shows some junk characters on the lcd, connected to that port, while on power up.
What could be the problem.
Thanks and regards
Itp