EXTENDED FUNCTION TIMER (EFT)
EXTENDED FUNCTION TIMER (Cont’d)
Figure 97. Output Compare Block Diagram
16 BIT FREE RUNNING
COUNTER
16-bit
OUTPUT COMPARE
CIRCUIT
OC1E OC2E
OCIE
16-bit
OC1R
16-bit
OC2R
OCF1
CC1 CC0
(Control Register 2) CR2
(Control Register 1) CR1
OLVL2
OLVL1
OCF2 0
0
0
(Status Register) SR
Latch
1
Latch
2
OCMP1
OCMP2
Figure 98. Output Compare Timing Diagram, Internal Clock Divided by 2
INTCLK
TIMER CLOCK
COUNTER FFFC FFFD FFFD FFFE FFFF 0000
OUTPUT COMPARE REGISTER CPU writes FFFF
FFFF
COMPARE REGISTER LATCH
OCFi AND OCMPi PIN (OLVLi=1)
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