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[DSP program] DS12887 DL : 0: DS12CR887实时时钟芯片功能丰富，其正常工作电压为3.3 V，工作电压范围为2.97 V～3.63 V，是应用在DSP硬件电路中的理想时钟芯片。DSl2CR887的具体的特性如下： (1) 具有10字节RAM用来存储时间信息。能够自动产生年、月、日、时、分、秒、星期等时间信息，并且有时、分、秒的闹铃功能，温度25℃时每个月的时间误差在±1分钟以内。 (2) 内部自带电池，外部掉电时，温度25℃时其内部时间信息能够保持5年之久。 (3) 对于一天内的时间记录，有12小时制和24小时制两种模式。在12小时制模式中，用AM和PM区分上午和下午。 (4) 时间有二进制数和BCD码两种表示方法。 (5) 内置128字节RAM，其中10字节RAM用来存储时间信息，4字节RAM用来存储控制信息，称为控制寄存器，114字节的通用RAM可供用户使用。 (6) 用户还可对DS12C887进行编程 -DS12CR887 real-time clock chips, and the normal function of rich working voltage is 3.3 V, working voltage range as 2.97 V- a 3.63 V, is used in digital signal processor (DSP) hardware circuit of the ideal clock chip. The specific characteristics of DSl2CR887 are as follows: (1) is used to store the RAM 10 bytes. Automatically generate year, month, day, week, minutes and seconds, such time information, and sometimes, minutes and seconds of alarm functions, while 25 degrees Celsius temperature per month during the time error within ± 1 minute. (2) internal cabin batteries, external power, the internal temperature of 25 degrees Celsius can keep time information for 5 years. (3) for the time of day, 12 hours and 24 hours of two kinds of patterns. In 12 hours system model, AM and PM distinction in the morning and afternoon. (4) time is binary number and BCD two methods. Built-in 128 bytes (5), including 10 bytes RAM is used to store information, RAM four bytes RAM time is us
Date : 2025-12-25 Size : 71kb User : ChenSheng
[DSP program] dsp6 DL : 0: CPU 看门狗实验 ■ LED 跑马灯实验 ■ CPU Timer 定时器实验 ■ 实时时钟实验 ■ AD 转换实验 ■ ADDR 转为GPIO 试验 ■ 蜂鸣器试验 ■ GPIO 试验 ■ 数码管显示试验 ■ 扩展 SDRAM 读写实验 ■ SPI EEPROM 读写实验 ■ SPI 自启动试验 ■ 快速傅立叶变换(FFT)实验 ■ FIR 滤波器实验 ■ IIR 滤波器实验 ■ 自适应滤波器（FIRLMS）实验 ■ 键盘扫描实验 ■ 外部中断输入实验 ■ AIC23 警报音实验 ■ 1602 显示实验-CPU watchdog experiment ■ LED Marquee experiment ■ CPU Timer timer experiment ■ Real-time clock experiment ■ AD conversion experiments ■ ADDR into GPIO test ■ Buzzer test ■ GPIO test ■ digital display test ■ Expansion SDRAM read and write test ■ SPI EEPROM read and write test ■ SPI since the start of the test ■ Fast Fourier Transform (FFT) Experiment ■ FIR filter test ■ IIR filter experiment ■ an adaptive filter (FIRLMS) Experiment ■ keyboard scan experiment ■ External interrupt input experiment ■ AIC23 alarm sound experiment ■ 1602 display experiment
Date : 2025-12-25 Size : 12.35mb User : 陈真
[DSP program] yearclock DL : 0: 日历以及时钟显示时-分-秒（ 2 位-2 位-2 位）显示 2.可通过按键置入时间值(参照电子表设置时间工作模式） 3.可通过按键控制在 LED 上从右向左滚动显示年_月_ 日 3 次，如： 2013_01_20 空空 2013_01_20 4.实现每日闹铃提醒功能，闹铃时间可用按键设置。闹铃采用提示音表示。 5.实现秒表功能。 6.实现定时器功能（预置定时时间，按键启动，倒计时，计到 0 响提示音。 7.设计实现音乐提示音。 8.能够在短时间按要求修改(Calendar and clock display Time - Division - second (2 bit -2 bit -2 bit) display 2. can be placed by keystroke time value (refer to the time working mode of the electronic table) The 3. can be controlled by buttons on the LED scroll from right to left display year month _ _ 3 times a day, such as: 2013_01_20 Empty 2013_01_20 4. to realize the alarm function of the daily alarm, the alarm time can be set by the button. The alarm is expressed in a hint. 5. to realize the stopwatch function. 6. to realize the timer function (preset timing, button start, countdown, and count the 0 sound. 7. design and Realization of music hints. 8. can be modified in a short period of time)
Date : 2025-12-25 Size : 4kb User : 瑞静丹峰