
ST72321xx-Auto 16-bit timer
Doc ID 13829 Rev 1 107/243
Figure 48. Output compare block diagram
Figure 49. Output compare timing diagram, f
TIMER
=f
CPU
/2
Figure 50. Output compare timing diagram, f
TIMER
=f
CPU
/4
OUTPUT COMPARE
16-bit
CIRCUIT
OC1R Register
16-BIT FREE RUNNING
COUNTER
OC1E CC0CC1OC2E
OLVL1OLVL2OCIE
(Control Register 1) CR1
(Control Register 2) CR2
000OCF2OCF1
(Status Register) SR
16-bit
16-bit
OCMP1
OCMP2
Latch
1
Latch
2
OC2R Register
pin
pin
FOLV2 FOLV1
INTERNAL CPU CLOCK
TIMER CLOCK
COUNTER REGISTER
OUTPUT COMPARE REGISTER i (OCRi)
OUTPUT COMPARE FLAG i (OCFi)
OCMPi PIN (OLVLi =1)
2ED3
2ED0 2ED1 2ED2
2ED3
2ED42ECF
INTERNAL CPU CLOCK
TIMER CLOCK
COUNTER REGISTER
OUTPUT COMPARE REGISTER i (OCRi)
2ED3
2ED0 2ED1 2ED2
2ED3
2ED42ECF
OUTPUT COMPARE FLAG i (OCFi)
OCMPi PIN (OLVLi =1)
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