Description: XX7299A是一款低价位且具有强抗干扰能力的多功能单片机外围芯片。它整合了数码管显示驱动（8 位数码管或者64 位LED）和键盘扫描（64个）控制，以及片上256字节E2PROM和256字节SRAM ，集成RTC（带有阴历和节气算法）、2路8位ADC（贴片）。XX7299A内置8MHz RC振荡电路，采用两线通信接口（兼容I2C）与单片机通信。-XX7299A is low and with the strong anti-jamming capability, multi-purpose microcontroller peripheral chips. It integrates a digital control display driver (eight digital tube or 64 LED) and the keyboard scan (64) control, and on-chip 256 byte E2PROM and 256 byte SRAM, Integrated RTC (with the lunar calendar and the Solar algorithm), two road eight ADC (SMT). XX7299A 8 MHz internal RC oscillator circuit, using two line Communication Interface (I2C compatible) and SCM communication. Platform: |
Size: 29098 |
Author:lhch |
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Description: XX7299A是一款低价位且具有强抗干扰能力的多功能单片机外围芯片。它整合了数码管显示驱动（8 位数码管或者64 位LED）和键盘扫描（64个）控制，以及片上256字节E2PROM和256字节SRAM ，集成RTC（带有阴历和节气算法）、2路8位ADC（贴片）。XX7299A内置8MHz RC振荡电路，采用两线通信接口（兼容I2C）与单片机通信。-XX7299A is low and with the strong anti-jamming capability, multi-purpose microcontroller peripheral chips. It integrates a digital control display driver (eight digital tube or 64 LED) and the keyboard scan (64) control, and on-chip 256 byte E2PROM and 256 byte SRAM, Integrated RTC (with the lunar calendar and the Solar algorithm), two road eight ADC (SMT). XX7299A 8 MHz internal RC oscillator circuit, using two line Communication Interface (I2C compatible) and SCM communication. Platform: |
Size: 28672 |
Author:lhch |
Hits:
Description: //实验板的AVR程序，驱动1602LCM(可显示2行，每行16个字符）模块显示实验练习。
//说明：RS高显示/低指令输入 RW高读/低写 EN高读数据/下降沿写数据
//具体电路可参照使用指南里的说明。每个字符为5×7或5×8的点阵，共16×2个字符。
//使用器件：ATMEGA8535，可更换。 使用默认的片内RC振荡器，1MHz。
//接线定义：PD4,5,6 为RS,R/W,EA。数据位为PC口。
//使用的开关：SW2-1,2,3.SW1-1,2,3,4,5,6,7,8.SW2-5为背光开关。 SW3-8为系统复位端。
-//Experimental board AVR programs, drivers 1602LCM (shows 2 lines, 16 characters per line) module shows that the experimental practice.// Description: RS showed high/low command input high-RW Read/write EN high-low read data/write data on falling edge// specific reference circuit description of the use of guides. Each character for the 5 × 7 or 5 × 8 lattice, a total of 16 × 2 characters.// Use the device: ATMEGA8535, can be replaced. Use the default-chip RC oscillator, 1MHz.// Connection definition: PD4, 5,6 for the RS, R/W, EA. Data bit for the PC port.// Use the switch: SW2-1, 2,3. SW1-1, 2,3,4,5,6,7,8. SW2-5 as a backlight switch. SW3-8 for the system reset terminal. Platform: |
Size: 658432 |
Author:应 |
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Description: 本文所设计的系统是基于AT89C52单片机控制的简易RLC测试仪。为了充分利用单片机的运算和控制功能，方便的实现测量。把参数R、L、C转换成频率信号f，然后用单片机计数后再运算求出R、L、C的值，并送显示。 转换的原理分别是RC振荡电路和电容三点式振荡电路。为了比较准确的测试而频率的计数则是利用等精度数字频率计完成。然后再将结果送单片机运算，并在LED显示器上显示所测得的数值。通过一系列的系统调试，本测试仪到达了测试标准。经过测试，
-In this paper, the system designed is based on AT89C52 single-chip microcomputer to control a simple RLC tester. In order to take full advantage of single-chip computing and control functions to facilitate the realization of measurement. The parameters R, L, C converted into frequency signal f, and then use the single-chip counts obtained after the operator R, L, C values, and sent to display. The principle of conversion is the RC oscillator circuit, respectively, and three-point oscillator circuit capacitance. In order to test more accurate frequency count is the number of frequency of use of complete accuracy. Then send the results of single-chip operation, and LED display shows the measured values. Through a series of system debugging, the tester arrived at the testing standards. After testing, Platform: |
Size: 533504 |
Author:马天 |
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Description: ＣＨ４５１是一个整合了数码管显示驱动和键盘扫描控制以及Ｐ监控的多功能外围芯片。ＣＨ４５１内置ＲＣ振荡电路，可以直接动态驱动８位数码管或者６４位ＬＥＤ， 具有ＢＣＤ译码或不译码功能，可实现数据的左移、右移、左循环、右循环、各数字独立闪烁等控制功能。 ＣＨ４５１内置大电流驱动级， 段电流不小于３０ｍＡ，字电流不小于１６０ｍＡ，并有１６ 级亮度控制功能；在键盘控制方面，该器件内置６４键键盘控制器，可实现８×８矩阵键盘扫描，并内置去抖动电路，可提供按键中断与按键释放标志位等功能；在外部接口方面， ＣＨ４５１可选择简洁的１线串行接口或高速４线串行接口，且内置上电复位，可提供高电平有效复位和低电平有效复位两种输出，同时内置看门狗电路Ｗａｔｃｈ－Ｄｏｇ。ＣＨ４５１提供有２８引脚的ＤＩＰ２８与ＳＯＰ２８封装以及ＤＩＰ２４Ｓ封装形式，２８脚与２４脚在功能上稍有差别-CH451 is an integrated LED display driver and the keyboard scan control and monitoring of the P-chip multifunction peripherals. RC oscillator circuit built-CH451, you can directly drive an 8-bit dynamic digital tube or 64-bit LED, with a BCD decoder or decoding function, data can be left, shifted to right, left circle, right circle, the number of independent scintillation and other control functions. CH451-level built-in high-current drive, current paragraph not less than 30mA, the word current is not less than 160mA, and a brightness control 16 in keyboard control, the device built-in 64-key keyboard controller can achieve 8 × 8 scan matrix keyboard and built-to-jitter circuit may interrupt the provision of key release and key features such as flag the external interface, CH451 choose simple or 1-wire serial interface high-speed 4-wire serial interface, and built on power-on reset can be reset to provide high effective and efficient reduction of two low-level output, built-in watchd Platform: |
Size: 2048 |
Author:秋落 |
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Description: 一种校准内部RC振荡器的方法，针对所有带可调（内部）RC振荡器的AVR芯片。除此之外，还提供了一个可以自行修改（参数值）的简单软件（用于校准内部RC振荡器）。这使得AVR芯片可以用AVR开发工具进行校准.-A calibration method of the internal RC oscillator, all with adjustable (internal) RC oscillator of the AVR chip. In addition, also provided a self-modification (parameter values) of the simple software (used to calibrate the internal RC oscillator). AVR which the chip can be calibrated AVR development tools. Platform: |
Size: 139264 |
Author:ECN |
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Description: AVR单片机教程，实例程序，并附有电路图，AVR片内集成多种频率的RC振荡器、上电自动复位、看门狗、启动延时等功能，外围电路更加简单，系统更加稳定可靠(AVR microcontroller tutorial, example program, and circuit diagram, AVR chip integrates multiple frequency RC oscillator, power on auto reset, watchdog, startup delay and other functions. The peripheral circuit is more simple, and the system is more stable and reliable.) Platform: |
Size: 3317760 |
Author:你笑哥 |
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