STC12LE5616AD datasheet(170/377 Pages) STC

170 / 377 page

In this mode, the timer register is configured as a 16-bit register. As the count rolls over from all 1s to all 0s, it

sets the timer interrupt flag TF0. The counted input is enabled to the timer when TR0 = 1 and either GATE=0 or

INT0 = 1.(Setting GATE = 1 allows the Timer to be controlled by external input INT0, to facilitate pulse width

measurements.) TR0 is a control bit in the Special Function Register TCON. GATE is in TMOD.

The 16-Bit register consists of all 8 bits of TH0 and the lower 8 bits of TL0. Setting the run flag (TR0) does not

clear the registers.

Mode 1 is the same as Mode 0, except that the timer register is being run with all 16 bits.

Timer/Counter 0 Mode 1 : 16-Bit Timer/Counter

Interrupt

SYSclk

TL0

(8 Bits)

TH0

(8 bits)

TF0

control

C/T=0

C/T=1

T0 Pin

TR0

GATE

INT0

AUXR.7/T0x12=0

÷12

÷1

AUXR.7/T0x12=1

C Program:

/*-------------------------------------------------------------------------------*/

/* --- STC MCU International Limited ----------------------------------*/

/* --- STC 1T Series 16-bit Timer Demo --------------------------------*/

/* If you want to use the program or the program referenced in the */

/* article, please specify in which data and procedures from STC */

/*-------------------------------------------------------------------------------*/

#include "reg51.h"

typedef unsigned char BYTE;

typedef unsigned int WORD;

//-----------------------------------------------

/* define constants */

#define FOSC 18432000L

#define MODE 1T

//Timer clock mode, comment this line is 12T mode, uncomment is 1T mode

There are two simple programs that demostrates Timer 0 as 16-bit Timer/Counter, one written in C language

while other in Assembly language.

7.2.2 Mode 1 (16-bit Timer/Counter) and Demo Programs (C and ASM)

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STC12LE5616AD Datasheet(PDF) 170 Page - STCmicro Technology Co,.Ltd

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