ST10F280_12 datasheet(76/239 Pages) STMICROELECTRONICS

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Capture/Compare (CAPCOM) units

ST10F280

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Doc ID 8673 Rev. 3

Note:

The CAPCOM2 unit provides 16 capture inputs, but only 12 compare outputs. CC24I to

CC27I are inputs only.

Figure 13.

Block diagram of CAPCOM timers T0 and T7

Figure 14.

Block diagram of CAPCOM timers T1 and T

Note:

When an external input signal is connected to the input lines of both T0 and T7, these timers

count the input signal synchronously. Thus the two timers can be regarded as one timer

whose contents can be compared with 32 capture registers.

When a capture/compare register has been selected for capture mode, the current contents

of the allocated timer will be latched (captured) into the capture/compare register in

response to an external event at the port pin which is associated with this register. In

addition, a specific interrupt request for this capture/compare register is generated.

Either a positive, a negative, or both a positive and a negative external signal transition at

the pin can be selected as the triggering event. The contents of all registers which have

been selected for one of the five compare modes are continuously compared with the

contents of the allocated timers.

When a match occurs between the timer value and the value in a capture /compare register,

specific actions will be taken based on the selected compare mode (see Table ).

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