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--- pad_frame [2020/12/12 04:55]
vsaxena
+++ pad_frame [2020/12/12 04:57] (current)
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-These basic pads designs are without ESD diodes. There are several cells in a I/O pad library. Here, we have PadNC (no connect), PadVdd (supply pad), PadGnd (ground pad), and PadAnalog (Pad for analog signals) as shown below. The PadFC is the frame corner cell.
+These basic pads designs are without ESD diodes. There are several cells in a I/O pad library. Here, we have PadNC (no connect), PadVdd (supply pad), PadGnd (ground pad), and PadAnalog (Pad for analog signals) as shown below. The PadFC is the frame corner cell. A designer can create custom padframe as needed for their designs using these cells. Commercial I/O pad cells include complex ESD, I/O circuits and guard rings.
 {{:wiki:pads.png?400|}}
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 {{:wiki:padframe2.png?300|}}
+You design goes in the empty area in the middle. Connect vdd! and gnd! to the I/O rings and the input and output signals to the PadAnalog pins.

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