ST72361AR4-Auto datasheet(129/279 Pages) STMICROELECTRONICS

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ST72361xx-Auto

8-bit timer (TIM8)

Doc ID 12468 Rev 3

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Moreover if one of the ICAPi pins is configured as an input and the second one as an output,

an interrupt can be generated if the user toggles the output pin and if the ICIE bit is set.

The TOF bit can be used with interrupt generation in order to measure events that go

beyond the timer range (FFh).

Figure 63.

Input capture block diagram

Figure 64.

Input capture timing diagram

13.3.3

Output compare

In this section, the index, i, may be 1 or 2 because there are two output compare functions in

the 8-bit timer.

This function can be used to control an output waveform or indicate when a period of time

has elapsed.

When a match is found between the Output Compare register and the free running counter,

the output compare function:

●

Assigns pins with a programmable value if the OCiE bit is set

●

Sets a flag in the status register

●

Generates an interrupt if enabled

Two 8-bit registers Output Compare Register 1 (OC1R) and Output Compare Register 2

(OC2R) contain the value to be compared to the counter register each timer clock cycle.

ICIE

CC0

CC1

8-bit

FREE RUNNING

COUNTER

IEDG1

(Control Register 1) CR1

(Control Register 2) CR2

ICF2

ICF1

(Status Register) SR

IEDG2

ICAP1

ICAP2

EDGE DETECT

CIRCUIT2

8-bit

IC1R Register

IC2R Register

EDGE DETECT

CIRCUIT1

TIMER CLOCK

COUNTER REGISTER

ICAPi PIN

ICAPi FLAG

ICAPi REGISTER

Note: The rising edge is the active edge

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