Timer 4 Is Used As Baud Rate Generator Of Uart4 - STC micro STC8A8K64D4 Series Reference Manual

STC8A8K64D4 Series Manual
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13.5.30 Timer 4 is used as baud rate generator of UART4

C language code
//Operating frequency for test is 11.0592MHz
#include "reg51.h"
#include "intrins.h"
#define FOSC 11059200UL
#define BRT (65536 - FOSC / 115200 / 4)
sfr T4T3M =
sfr T4L =
sfr T4H =
sfr T3L =
sfr T3H =
sfr T2L =
sfr T2H =
sfr S4CON =
sfr S4BUF =
sfr IE2 =
sfr P0M1 =
sfr P0M0 =
sfr P1M1 =
sfr P1M0 =
sfr P2M1 =
sfr P2M0 =
sfr P3M1 =
sfr P3M0 =
sfr P4M1 =
sfr P4M0 =
sfr P5M1 =
sfr P5M0 =
bit busy;
char wptr;
char rptr;
char buffer[16];
P2M1, #00H
P3M0, #00H
P3M1, #00H
P4M0, #00H
P4M1, #00H
P5M0, #00H
P5M1, #00H
T4L,#66H
T4H,#0FCH
T4T3M,#90H
$
0xd1;
0xd3;
0xd2;
0xd5;
0xd4;
0xd7;
0xd6;
0x84;
0x85;
0xaf;
0x93;
0x94;
0x91;
0x92;
0x95;
0x96;
0xb1;
0xb2;
0xb3;
0xb4;
0xc9;
0xca;
;65536-11.0592M/12/1000
;Enable clock output and start timer
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