Motorola USB08 Instructions d'exploitation Page 82

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3. Relay RL1 performs the power-on reset. A relay is likely to be particularly inappropriate here
because of contact bounce.
4. Relay RL2 provides the switching between monitor mode and user mode. This is only required
if you wish to switch modes remotely.
5. Vtst is the higher-than-Vdd voltage needed to access monitor mode. See the individual data
sheets for its value.
Xplor8 Development Board
For interest, I attach below the circuit of the board that I used for most of the development work on
Xplor8.
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