Data Sheet

NUC123
May 3, 2017 Page 55 of 99 Rev.2.04
NUC123 SERIES DATASHEET
Timer Controller (TMR) 6.7
6.7.1 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.
6.7.2 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-output and continuous counting operation modes
 24-bit up counter value is readable through TDR (TDR[23:0])
 Supports event counting function
 24-bit capture value is readable through TCAP (TCAP[23:0])
 Supports external capture pin event for interval measurement
 Supports external capture pin event to reset 24-bit up counter
 Supports chip wake-up from Idle/Power-down mode if a timer interrupt signal is generated