AN2434 Freescale Semiconductor / Motorola, AN2434 Datasheet - Page 18

• Manufacturer Part Number: AN2434
• Description: Input/Output (I/O) Pin Drivers
• Manufacturer: Freescale Semiconductor / Motorola

Conclusion
Conclusion
The graphs and data in this application note suggest that MCU GPIO pins can source or sink much more
current than the official specification recommends. Though adverse effects may not be immediately
apparent, the damaging phenomena described in this document may deteriorate the life and/or
performance of the MCUs and/or its components. To improve the life and performance of Freescale
Semiconductor MCUs, designs and applications must comply with approved specifications in the device
data sheet or user guide.
References
Dabral, Sanjay and Maloney, Timothy. Basic ESD and I/O Design . New York: John Wiley and Sons, Inc.,
1998.
Also see
18
Appendix A
and
Appendix
Back EMF Clamped by External Diodes
Figure 16. Reduced Inductive Spike
REDUCED INDUCTIVE SPIKE
B.
Input/Output (I/O) Pin Drivers, Rev. 0
REDUCED INDUCTIVE SPIKE
Freescale Semiconductor