PFS172 datasheet(41/92 Pages) PADAUK

41 / 92 page

PFS172

8bit MTP MCU with 8-bit ADC

Page 41 of 92

PDK-DS-PFS172-EN_V000-May 8, 2020

User can define the parameters of T16M based on system requirement, some examples are shown below

and more examples please refer to “Application Note

 IC Introduction  Register Introduction  T16M” in

IDE utility.

$ T16M SYSCLK, /64, BIT15;

// choose (SYSCLK/64) as clock source, every 2^16 clock to set INTRQ.2=1

// if using System Clock = IHRC / 2 = 8 MHz

// SYSCLK/64 = 8 MHz/64 = 125KHz, about every 512 mS to generate INTRQ.2=1

$ T16M EOSC, /1, BIT13;

// choose (EOSC/1) as clock source, every 2^14 clocks to generate INTRQ.2=1

// if EOSC=32768 Hz, 32768 Hz/(2^14) = 2Hz, every 0.5S to generate INTRQ.2=1

$ T16M PA0_F, /1, BIT8;

// choose PA0 as clock source, every 2^9 to generate INTRQ.2=1

// receiving every 512 times PA0 to generate INTRQ.2=1

$ T16M STOP;

// stop Timer16 counting

If Timer16 is operated at free running, the frequency of interrupt can be described as below:

FINTRQ_T16M = Fclock source ÷ P ÷ 2

n+1

Where, F is the frequency of selected clock source to Timer16;

P is the selection of t16m [4:3]; (1, 4, 16, 64)

N is the n

th bit selected to request interrupt service, for example: n=10 if bit 10 is selected.

PFS172 Datasheet(PDF) 41 Page - PADAUK Technology.