• ADuC831: FAQs

    Q 

    1. What's the maximum sampling rate of ADuC831? The uC019 specifies 200KHz;

    2. In DMA mode, the enclosed code example of external triggered conversions
    configured the CK1 CK0 and AQ1 AQ0 of ADCCON1, why? For this mode's sampling
    rate…

  • ADuC831: INTVAL

    Q 

    Does the 8bit interval counter reset to zero automatically when the comparator
    generates an interrupt? If not how can I reset this counter?
    If I'd like to load an new value into the register intval, do I need to clear
    TCEN first? …

  • ADuC831

    If the security mode set on ADUC831BS is 'SECURE MODE', will this affect programmatic Read / Write operations in ULOAD mode ? For example, when the running application takes a configuration input from user and stores it in 'data memory' OR 'program memory…

  • ADuC831 Flash security

    I would like to know is once the software is loaded on to the device and the bit is changed to lock the code in.  Is there a way to upload the code again?  Realistically.  I have heard of places that will cap the part and actually probe the memory area and…

  • ADuC831 Flash memory prog. spec.

    Hello,

    Does there exist newer Flash memory programming specification of ADuC831 device? We already have got version 0.4/June 2004. If there is newer prog. spec. can someone provide one?

    Frantisek

  • ADUC831 and USB-EA-CONVZ

    Hello,

    I have been using the USB-EA-CONVZ with the ADUC831 successfully until suddenly when I try to upload code from my Keil debugger I get a Serial protocol error: NACK reply received.  I can no longer debug and set breakpoints with it but can successfully…

  • ADuC831 variable corruption issue in ISR

    I have a customer running into a variable corruption issue on a ADuC831 while in an ISR.   See below for the details and question.

    We’re using an ADuC831 microconverter to control an LED based backlight solution via a PWM signal.  We vary the width of the…

    • codesnippet.txt.zip

  • Is the ADuC831 good for new design???

    I need to know if the ADuC831 is good for new design. If not, what is a good substitute? Has to have ADC on kit!!

  • Analog input noisy when timer is 8Khz - ADuC831

    I have an application where an ADuC831 is being used to sample a frequency input on Pin 1 (T2) input, and the rest of ADC pins are being used to sample analog voltages.

    I noticed that when the timer input is exactly 8Khz, the remaining analog inputs…

  • ADuC831的SPI通讯问题

    使用两个ADuC831，一个做主机，一个做从机，通过设置后可以正常通讯。但发现一个问题：从机使用自身3个通路的AD转换器（没有使用到p1.5/SS口），当主机给从机发送命令读取命令，从机正好在进行AD转换时，这时就会发生AD转换结果不正确，或者从机不进入SPI响应中断，导致收发数据不正确。初步估计，应该是SS片选信号使用了内部AD转换器的一个通道（AD5）造成的，这种问题应怎么解决？在SPI中，从机能不能进行应答？还是被动接受主机发送的数据？当从机在运算数据或者AD转换过程中，主机发来数据就会造成错误…