Timer Functional Description - Nuvoton ISD94124BYI Technical Reference Manual

Isd arm cortex-m4f soc

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6.7.4.2 TIMER23 basic configurations

Clock source configuration

Enable TIMER2 peripheral clock in TMR2CKEN (CLK_APBCLK0[4]).

Enable TIMER3 peripheral clock in TMR2CKEN (CLK_APBCLK0[5]).

Reset configuration

Reset TIMER2 controller in TMR2RST (SYS_IPRST1[4]).

Reset TIMER3 controller in TMR3RST (SYS_IPRST1[5]).

Pin configuration

Timer Functional Description

Timer Interrupt Flag

In timer mode, Timer controller can generate the two interrupts:

Timer Interrupt: TIF (TIMERx_INTSTS[0]) bit will be set when timer counter value CNT

(TIMERx_CNT[23:0]) matches the timer compared value CMPDAT (TIMERx_CMP[23:0]);

Timer External Capture Interrupt: CAPIF (TIMERx_EINTSTS[0]) bit will be set when a

transition that matches CAPEDGE (TIMERx_EXTCTL[14:12]) setting is detected on the

TMx_EXT pin.

TWKF (TIMERx_INTSTS[1]) bit will be set if a timer mode interrupt wakes up the system. Writing

1 to this bit clears the flag.

Timer Counting Mode

Timer controller provides four timer counting modes: one-shot, periodic, toggle-output and

ISD94100 Series Technical Reference Manual

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