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Installation
2.1.4 Selecting the VDDL Source
The J3 jumper is used to select the VDDL, which supplies the MPC821's internal logic.
When the J3 jumper is between positions 1 and 2, VDDL is supplied with 3.3V of power.
When the J3 jumper is between positions 2 and 3, VDDL is supplied with 2.2V of power. The
J3 jumper is factory set between positions 1 and 2.
J3
J3
1
1
3.3V VDDL
2V VDDL
Figure 2-5. VDDL Source
MOTOROLA
MPC821FADS-DB USER'S MANUAL
2-5
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