M263 datasheet(15/398 Pages) NUVOTON

15 / 398 page

M261/M262/M263

Mar 25, 2020

Page 15 of 398

Rev 1.02

accuracy that can optionally be used as a system clock

 48 MHz High-speed Internal RC oscillator (HIRC48) trimmed to

0.25% accuracy that can optionally be used as a system clock

 10 kHz Low-speed Internal RC oscillator (LIRC) for watchdog timer

and wakeup operation

 32kHz Low-speed Internal RC oscillator (LIRC32) for RTC function

 Up to 144 MHz on-chip PLL, sourced from HIRC or HXT, allows

CPU operation up to the maximum CPU frequency without the need

for a high-frequency crystal

Real-Time Clock (RTC)

 Real-Time Clock with a separate power domain

 The RTC clock source includes Low-speed external crystal

oscillator (extLXT) and 32kHz Low-speed Internal RC oscillator

(LIRC32) and 10kHz Low-speed Internal RC oscillator (LIRC)

 The RTC block includes 80 bytes of battery-powered backup

registers, which can be cleared by tamper pins

 Supports 6 static and dynamic tamper pins

 Able to wake up CPU from any reduced power mode

 Supports Alarm registers (second, minute, hour, day, month, year)

 Supports RTC Time Tick and Alarm Match interrupt

 Automatic leap year recognition

 Supports 1 Hz clock output for calibration

 Frequency of RTC clock source compensate by RTC_FRWQADJ

Timers

32-bit Timer

TIMER

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

scale counter from independent clock source

 One-shot, Periodic, Toggle and Continuous Counting operation

modes

 Supports event counting function to count the event from external

pins

 Supports external capture pin for interval measurement and

resetting 24-bit up counter

 Supports chip wake-up function, if a timer interrupt signal is

generated

PWM

 Eight 16-bit PWM counters with 12-bit clock prescale with up to 64

MHz

 Supports 12-bit deadband (dead time)

 Up, down or up-down PWM counter type

 Supports brake function

 Supports mask function and tri-state output for each PWM channel

Enhanced PWM (EPWM)

 Twelve 16-bit counters with 12-bit clock prescale for twelve 64 MHz

PWM output channels

 Up to 12 independent input capture channels with 16-bit resolution

M263 Datasheet(PDF) 15 Page - Nuvoton Technology Corporation

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