• I/O port of ADUC7021


    I use pin 3 of port 1 (P1.3) on my products and at power up, the port is in high impedance, everything is ok.

    Now we received a new reel of aduc7021 and this port (pin 1.3) now emit a glitch at power_up : 2V during 17ms with a pull down of 68Kohm…

  • RE: Is it possible to route PWM0H output to an external pin on the ADuC7021?

    Yes, this is possible.

    The pin-out of the ADuC7021 is slightly different to the ADuC7020.

    The following code will work for the ADuC7021:

    GP1CON = 0x30000003;

    GP3CON = 0x30000001;

    GP4CON = 0x30000003;

    PWMCON = 0x1;                     //Enables PWM output


  • ADUC7021 can not download to flash memory

    Hi,Everyone , I got a problem in recently.

    Why the same conditional of hard ware can not programming?

    I try to remove and re-soldering ECU ,but it still show the message again.

    I check circuit no short and open and also check clock frequency is 32…

  • ADuC7021 Intermittently comes out of reset.

    Hello team,

    We have a device that uses the ADuC7021.  We have recently released the device to production.  Now that large numbers of these devices are being manufactured, we are discovering that about 3-5% of them are not coming out of reset on power-up…

  • ADuC7021上电异常



    • 程序没有运行;
    • 几乎所有I/O管脚(至少是我引出的管脚)输出都为高电平。



    • 只有当板子的供电与电源模块一直相连,闭合电源模块上电时才会发生该异常;
    • 若电源模块已上电,通过拔插板子与电源模块的供电线的方式让板子上电则70…
  • RE: If using an ADI micorcontroller in a LFCSP package, how do I connect the exposed paddle on the underside of the package on my PCB?

    On the following parts, the exposed paddle is used for mechanical stability and should be connected to a large pad on your PCB but, this pad should not be connected to ground or any other track:

    ADuC7019, ADuC7020, ADuC7021, ADuC7022, ADuC7023, ADuC7024…

  • RE: ADuC7021 downloads once, unable to halt after that

    It would be more helpful to send your complete project folder as a zip-file. As I assume, and experience proves it, that there is some kind of error in the exception handling of your project blocking the core and JTAG.

  • Could I use the PLA in 7021 when it is in boot mode

    Hi, I was using the ADuC7021 controller. I was planning to use a RS485 driver to interface with an external device.However most of the 485 drivers dont have autodirection features that is it cant transmit or recive automatically. So i was trying to use…

  • Is it possible to use the ARMWSD.exe serial downloader over RS485?

    I am using an ADuC7021 on a board that is available in two configurations: RS232 and RS485. I presumed that the bootloader would work on both versions of the board, as none of the documentation I could find said it wouldn't.

    While the blackspace…

  • RE: ADuC7020 Serial Download problem

    I encounter the same problem.




    I31 #1238


    Are the new (shipped) parts ready for entering UART bootstrap mode?

    MCU doesn't reply for ARMWSD.

    Is there any method (besides JTAG, i havn't emulator tool) for…