FAQ: P89LPC9221 Programmer Issue
Hello everybody. I am using P89LPC9221 SMD microcontroller. I have built the programmer circuit similar to MCB900 by Keil. I have measured the waveform of /RST and VDD and they appear the same as mentioned in Flash Magic 3.21 datasheet. However, flash magic always give me this error message when I try to program my P89LPC9221:
Unable to connect at the specified baudrate. Try reducing the baudrate. Reset the hardware into ISP mode again.
I have tried all the available baudrates and T1 & T2 combinations but still face the same problem.
What would be the possible errors?
Please advise. Thanks!
Regards,
Ivan
Hello everybody. I am using P89LPC9221 SMD microcontroller. I have built the programmer circuit similar to MCB900 by Keil. I have measured the waveform of /RST and VDD and they appear the same as mentioned in Flash Magic 3.21 datasheet. However, flash magic always give me this error message when I try to program my P89LPC9221:
Unable to connect at the specified baudrate. Try reducing the baudrate. Reset the hardware into ISP mode again.
I have tried all the available baudrates and T1 & T2 combinations but still face the same problem.
What would be the possible errors?
Please advise. Thanks!
Regards,
Ivan