STC89C52RC单片机介绍
时间: 2024-04-04 19:21:06 浏览: 590
STC89C52RC 是一种高性能、低功耗、8 位 CMOS 单片机,由中国 STC 微控制器公司生产。它采用了基于 Harvard 结构的 8051 内核,具有 12MHz 的最高工作频率,可以在单片机内部集成 32KB 的闪存程序存储器和 1KB 的 RAM 数据存储器,同时支持 ISP(In-System Programming)在线编程技术,方便用户进行程序烧录和更新。
此外,STC89C52RC 还具有丰富的外设资源,包括 3 个定时器/计数器、1 个串行通信接口(UART)、2 个中断源、4 个通用输入/输出引脚(GPIO)、1 个 10 位 ADC(模数转换器)等,可广泛应用于各种嵌入式系统和控制领域,如智能家居、工业自动化、仪器仪表、电子设备等。
相关问题
用stc89c52rc单片机为辅机和stc15w408as单片机为主机进行串口通信的代码,让stc89c52rc单片机通过矩阵按键1或者2发送指令,stc15w408as单片机进行接收,相对应按键后让P5^4为引脚的LED亮,让stc89c52rc单片机在ld1602显示的温度数加1,相反减1
以下是用stc89c52rc单片机为辅机和stc15w408as单片机为主机进行串口通信的代码:
stc89c52rc单片机代码:
```c
#include <reg52.h>
#include <intrins.h>
#define FOSC 11059200L
#define BAUD 9600
#define TIMER_1MS (65536-FOSC/12/1000)
sbit Matrix1 = P2^0;
sbit Matrix2 = P2^1;
unsigned char TxdData;
unsigned char ReceiveData;
unsigned char TxdFlag = 0;
void SendData(unsigned char dat);
void DelayMs(unsigned int ms);
void InitUart();
void MatrixScan();
void main()
{
InitUart();
while(1)
{
MatrixScan();
if(Matrix1 == 0)
{
SendData('1');
while(Matrix1 == 0);
P5^4 = 1;
DelayMs(10);
P5^4 = 0;
}
if(Matrix2 == 0)
{
SendData('2');
while(Matrix2 == 0);
P5^4 = 1;
DelayMs(10);
P5^4 = 0;
}
}
}
void SendData(unsigned char dat)
{
SBUF = dat;
while(!TxdFlag);
TxdFlag = 0;
}
void DelayMs(unsigned int ms)
{
unsigned int i,j;
for(i=ms; i>0; i--)
for(j=110; j>0; j--);
}
void InitUart()
{
TMOD &= 0x0F;
TMOD |= 0x20;
TH1 = TIMER_1MS / BAUD;
TL1 = TIMER_1MS % BAUD;
TR1 = 1;
ES = 1;
EA = 1;
}
void MatrixScan()
{
unsigned char i;
static unsigned char code KeyTable[] =
{
0x7f,0xbf,0xdf,0xef,
0xf7,0xfb,0xfd,0xfe
};
for(i=0; i<8; i++)
{
P1 = KeyTable[i];
_nop_();
if((P1 & 0x0f) != 0x0f)
break;
}
if(i < 8)
{
switch(i)
{
case 0: ReceiveData = '1'; break;
case 1: ReceiveData = '4'; break;
case 2: ReceiveData = '7'; break;
case 3: ReceiveData = '*'; break;
case 4: ReceiveData = '2'; break;
case 5: ReceiveData = '5'; break;
case 6: ReceiveData = '8'; break;
case 7: ReceiveData = '0'; break;
default: break;
}
}
else ReceiveData = 0;
}
void UartIsr() interrupt 4
{
if(RI)
{
RI = 0;
ReceiveData = SBUF;
if(ReceiveData == '1')
{
P5^4 = 1;
DelayMs(10);
P5^4 = 0;
}
if(ReceiveData == '2')
{
P5^4 = 1;
DelayMs(10);
P5^4 = 0;
}
}
if(TI)
{
TI = 0;
TxdFlag = 1;
}
}
```
stc15w408as单片机代码:
```c
#include <REG52.H>
#include <stdio.h>
#define FOSC 22118400L
#define BAUD 9600
#define TIMER_1MS (65536-FOSC/12/1000)
sbit LED = P5^4;
unsigned char TxdData;
unsigned char ReceiveData;
unsigned char Temperature = 25;
unsigned char TxdFlag = 0;
void SendData(unsigned char dat);
void InitUart();
void InitTimer0();
void Timer0Isr() interrupt 1;
void UartIsr() interrupt 4;
void main()
{
InitUart();
InitTimer0();
while(1);
}
void SendData(unsigned char dat)
{
SBUF = dat;
while(!TxdFlag);
TxdFlag = 0;
}
void InitUart()
{
TMOD &= 0x0F;
TMOD |= 0x20;
TH1 = TIMER_1MS / BAUD;
TL1 = TIMER_1MS % BAUD;
TR1 = 1;
ES = 1;
EA = 1;
}
void InitTimer0()
{
TMOD &= 0xF0;
TMOD |= 0x01;
TH0 = TIMER_1MS / 1000;
TL0 = TIMER_1MS % 1000;
ET0 = 1;
EA = 1;
TR0 = 1;
}
void Timer0Isr() interrupt 1
{
TH0 = TIMER_1MS / 1000;
TL0 = TIMER_1MS % 1000;
Temperature++;
if(Temperature > 40)
Temperature = 25;
}
void UartIsr() interrupt 4
{
if(RI)
{
RI = 0;
ReceiveData = SBUF;
if(ReceiveData == '1')
LED = 1;
if(ReceiveData == '2')
LED = 0;
}
if(TI)
{
TI = 0;
TxdFlag = 1;
}
}
```
介绍STC89C52RC单片机
STC89C52RC是一款由STC公司推出的单片机,它采用了MCS-51指令集架构,具有较高的性能和可靠性。该单片机具有8位数据总线和16位地址总线,内置了4K/8K/16K/32K字节的Flash程序存储器和256字节的数据RAM,还具备多种外设接口,如UART、SPI、I2C等,并支持多种中断方式。此外,STC89C52RC还具有丰富的定时器和PWM输出功能,可广泛应用于工业控制、仪表、通信、汽车电子等领域。
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