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USING ST62xx I/O PORTS SAFELY

4 MODE TRANSITION DIAGRAMS

Figure 6. shows the recommended transfer sequence for changing from one state to another

(no other transitions should be used).

Figure 6. Diagram for safe transitions

Figure 7. illustrates the transitions which are most likely to cause a change of operation mode

causing unwanted side effects such as false interrupt generation or two pins being shorted to-

gether via the analog input line.