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Block Diagram: Figure 9.2 shows a block diagram of timer F.
ø
TMIF
Toggle
TMOFL
circuit
Toggle
TMOFH
circuit
Legend:
TCRF:
Timer control register F
TCSRF:
Timer control status register F
TCFH:
8-bit timer counter FH
TCFL:
8-bit timer counter FL
OCRFH:
Output compare register FH
OCRFL:
Output compare register FL
IRRTFH:
Timer FH interrupt request flag
IRRTFL:
Timer FL interrupt request flag
PSS:
Prescaler S
166
PSS
Figure 9.2 Block Diagram of Timer F
TCRF
TCFL
Compare circuit
OCRFL
TCFH
Compare circuit
OCRFH
TCSRF
IRRTFL
Match
IRRTFH
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