a)

b)

Photo 5a—As you look at the top of my Z8 E-Field EVM, you can see the top jumper connects the external VREF to the Z8. The watchdog signal select jumper is just below the VREF jumper. Note the floppy drive power connector. b—You’ll find nothing unusual in my Z8-based EVM. I decided to mount the support components on this side of the board to free up as much space as possible for extending the Z8’s I/O and to provide as much heatsink and ground plane as I could on the other side of the board. Note the Ref A and Ref B capacitor positions are just to the upper right of the header.