NUC505-YO2G datasheet(90/130 Pages) NUVOTON

90 / 130 page

NUC505

July. 26, 2018

Page 90 of 130

Rev.1.08

Timer Controller (TIMER)

6.5

6.5.1

Overview

The Timer Controller includes four 32-bit timers, TIMER0 ~ TIMER3, allowing user to easily

implement a timer control for applications. The timer can perform functions, such as frequency

measurement, delay timing, clock generation, and event counting by external input pins, and

interval measurement by external capture pins.

6.5.2

Features



Four sets of 32-bit timers with 24-bit up counter and one 8-bit prescale counter



Independent clock source for each timer



Provides One-shot, Periodic, Toggle and Continuous Counting operation modes



Time-out period = (Period of timer clock input) * (8-bit prescale counter+1) * CMPDAT

(TIMERx_CMP[23:0])



Maximum counting cycle time = (1 / T MHz) * (2

8) * (224), T is the period of timer clock



24-bit up counter value is readable through TIMERx_CNT (Timer Data Register)



Supports event counting function to count the event from external pin

(TM0_CNT_OUT~TM3_CNT_OUT)



Supports external capture pin (TM0_EXT~TM3_EXT) for interval measurement



Supports external capture pin (TM0_EXT~TM3_EXT) to reset 24-bit up counter



Supports chip wake-up from Idle mode, Power-down mode and Deep Power-down mode, if

a timer interrupt signal is generated.

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