ST72361AR4-Auto datasheet(127/279 Pages) STMICROELECTRONICS

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ST72361xx-Auto

8-bit timer (TIM8)

Doc ID 12468 Rev 3

127/279

Reading the SR register while the TOF bit is set.

An access (read or write) to the CTR register.

Note:

The TOF bit is not cleared by accesses to ACTR register. The advantage of accessing the

ACTR register rather than the CTR register is that it allows simultaneous use of the overflow

function and reading the free running counter at random times (for example, to measure

elapsed time) without the risk of clearing the TOF bit erroneously.

The timer is not affected by WAIT mode.

In HALT mode, the counter stops counting until the mode is exited. Counting then resumes

from the previous count (MCU awakened by an interrupt) or from the reset count (MCU

awakened by a Reset).

Figure 60.

Counter timing diagram, internal clock divided by 2

Figure 61.

Counter timing diagram, internal clock divided by 4

Figure 62.

Counter timing diagram, internal clock divided by 8

Note:

The MCU is in reset state when the internal reset signal is high, when it is low the MCU is

running.

fCPU CLOCK

INTERNAL RESET

TIMER CLOCK

COUNTER REGISTER

TIMER OVERFLOW FLAG (TOF)

fCPU CLOCK

INTERNAL RESET

TIMER CLOCK

COUNTER REGISTER

TIMER OVERFLOW FLAG (TOF)

fCPU CLOCK

INTERNAL RESET

TIMER CLOCK

COUNTER REGISTER

TIMER OVERFLOW FLAG (TOF)

ST72361AR4-Auto Datasheet(PDF) 127 Page - STMicroelectronics