Z51F3220 Datasheet, PDF (17/54 Pages) Zilog, Inc. – 1 green LED to indicate USB power: D5

Z51F3220 Development Kit
User Manual
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4. When Windows prompts you whether to install or not install, as shown in Figure 7,
click Install this driver software anyway and wait until the installation is completed
(Windows may prompt you more than once).
Figure 7. Can’t Verify Publisher Dialog, Windows Vista
UM024307-1112
Install the Z8051 OCD Software and Documentation