AT89S51单片机的芯片手册 可使用，学习学习，做些小玩意 Features • Compatible with MCS®-51 Products • 4K Bytes of In-System Programmable (ISP) Flash Memory – Endurance: 10,000 Write/Erase Cycles • 4.0V to 5.5V Operating Range • Fully Static Operation: 0 Hz to 33 MHz • Three-level Program Memory Lock • 128 x 8-bit Internal RAM • 32 Programmable I/O Lines • Two 16-bit Timer/Counters • Six Interrupt Sources • Full Duplex UART Serial Channel • Low-power Idle and Power-down Modes • Interrupt Recovery from Power-down Mode • Watchdog Timer • Dual Data Pointer • Power-off Flag • Fast Programming Time • Flexible ISP Programming (Byte and Page Mode) • Green (Pb/Halide-free) Packaging Option

FPGA 读写rtc_ds1302实时时钟的Verilog逻辑源码Quartus工程文件+文档说明，RTC芯片型号ds1302，FPGA型号Cyclone4E系列中的EP4CE6F17C8，Quartus版本17.1。 module top( //sys input clk, input rst_n, output rtc_sclk, output rtc_ce, inout rtc_data, output [5:0] seg_sel, output [7:0] seg_data ); wire[7:0] read_second; wire[7:0] read_minute; wire[7:0] read_hour; wire[7:0] read_date; wire[7:0] read_month; wire[7:0] read_week; wire[7:0] read_year; seg_bcd seg_bcd_m0( .clk (clk), .rst_n (rst_n), .seg_sel (seg_sel), .seg_data (seg_data), .seg_bcd ({read_hour,read_minute,read_second}) ); ds1302_test ds1302_test_m0( .rst (~rst_n), .clk (clk), .ds1302_ce (rtc_ce), .ds1302_sclk (rtc_sclk), .ds1302_io (rtc_data), .read_second (read_second), .read_minute (read_minute), .read_hour (read_hour), .read_date (read_date), .read_month (read_month), .read_week (read_week), .read_year (read_year) ); endmodule

单片机开发0011、采用实时时钟芯片DS1302+AT89C2051的红外遥控LED电子钟.zip

DS1302时钟串口自动更新时间 51单片机 C语言经典例程

51单片机DS1302时钟完整源程序，给需要的人参考一下哈，好的话多多支持哈

STM32RTC时 钟整理了一下DS1302的代码，串口输出，KEIL5原工程，亲测可用，有接线说明和使用说明

美信实时时钟芯片 (RTCs)全系列原理图库+PCB封装库（AD集成库），.IntLib后缀文件，拆分后文件为PcbLib+SchLib格式，Altium Designer原理图库+PCB封装库，集成库型号列表如下：Library Component Count : 548 Name Description ---------------------------------------------------------------------------------------------------- DS1243Y-120+ 64K NV SRAM with Phantom Clock, 5.0V, 28-Pin EDIP, 0 to 70 degC, Pb-Free DS1244W-120+ 256K NV SRAM with Phantom Clock, 3.3V, 28-Pin EDIP, 0 to 70 degC, Pb-Free DS1244W-120IND+ 256K NV SRAM with Phantom Clock, 3.3V, 28-Pin EDIP, -40 to 85 degC, Pb-Free DS1244WP-120+ 256K NV SRAM with Phantom Clock, 3.3V, 34-Pin PowerCap, 0 to 70 degC, Pb-Free DS1244WP-120IND+ 256K NV SRAM with Phantom Clock, 3.3V, 34-Pin PowerCap, -40 to 85 degC, Pb-Free DS1244Y-70+ 256K NV SRAM with Phantom Clock, 5.0V, 28-Pin EDIP, 0 to 70 degC, Pb-Free DS1244YP-70+ 256K NV SRAM with Phantom Clock, 5.0V, 34-Pin PowerCap, 0 to 70 degC, Pb-Free DS1248W-120+ 1024K NV SRAM with Phantom Clock, 3.3V, 32-Pin EDIP, 0 to 70 degC, Pb-Free DS1248W-120IND+ 1024K NV SRAM with Phantom Clock, 3.3V, 32-Pin EDIP, -40 to 85 degC, Pb-Free DS1248WP-120+ 1024K NV SRAM with Phantom Clock, 3.3V, 34-Pin PowerCap, 0 to 70 degC, Pb-Free DS1248WP-120IND+ 1024K NV SRAM with Phantom Clock, 3.3V, 34-Pin PowerCap, -40 to 85 degC, Pb-Free DS1248Y-70+ 1024K NV SRAM with Phantom Clock, 5.0V, 32-Pin EDIP, 0 to 70 degC, Pb-Free DS1248Y-70IND+ 1024K NV SRAM with Phantom Clock, 5.0V, 32-Pin EDIP, -40 to 85 degC, Pb-Free DS1248YP-70+ 1024K NV SRAM with Phantom Clock, 5.0V, 34-Pin PowerCap, 0 to 70 degC, Pb-Free DS1251W-120+ 4096K NV SRAM with Phantom Clock, 3.3V, 32-Pin EDIP, 0 to 70 degC, Pb-Free DS1251W-120IND+ 4096K NV SRAM with Phantom Clock, 3.3V, 32-Pin EDIP, -40 to 85 degC, Pb-Free DS1251WP-120+ 4096K NV SRAM with Phantom Clock, 3.3V, 34-Pin PowerCap, 0 to 70 degC, Pb-Free DS1251WP-120IND+ 4096K NV SRAM with Phantom Clock, 3.3V, 34-Pin PowerCap, -40

整个系统设计分为硬件和软件两部分。在硬件方面，对硬件的各个环节都进行了仔细的分析、选取和设计。系统以单片机AT89S51为控制核心，采用温度传感器DS18B20进行数据采集，通过无线收发模块进行无线传输。在无线接收端，利用LCD液晶显示模块进行相关数据显示，并且单片机可通过RS232接口与计算机通信，进行温度的检测与控制。在软件方面，分为下位机软件与上位机软件两部分。下位机软件采用了C51高级语言进行程序设计，实现软件编程的模块化和独立性，具有良好的可测试性和可靠性。上位机软件采用C++ Builder作为开发环境，实现与下位机通信、数据处理与显示等功能。 经过软件仿真和硬件实验，本设计实现了对大棚温度的监测和控制，监测距离大于200m。

用51单片机和DS1302实现LED点阵显示时钟，时钟可调

基于AT89S51单片机的微小位移量检测系统设计、电子技术,开发板制作交流