Hi, everbody
What's T1 and T2 for LPC9xx ISP hardware entry ?
I look for nothing for T1 and T2.
Go to Options -> Advanced Options -> Hardware Config
T1 and T2 were added for the LPC9xx in Flash Magic version 1.96.
Thanks Andy.
But, I mean that Why add t1 and t2 ?
What relation does the t1 & t2 have with the ISP?
Section 7.3.2 of the manual shows a simplified timing diagram. Looking at that you can see:
T1 = delay between powering down the device and powering the device back up
T2 = delay between powering up the device and applying the pulses
More capacitance on VDD = longer times needed for T1 and T2.