Author Topic: problem :P89LV51RD2 connection  (Read 2412 times)

6uoos

  • Guest
problem :P89LV51RD2 connection
« on: September 27, 2006, 09:46:53 pm »
I try to program this MCS by FlashMagic but it's not work.
I 'm not sure that the problems are from circuits connection or not.
Could you please check them again, thankyou

Connection detail : ( in ISP mode )

- Quartz Crystal 16 MHz  with 30pF Capacitors
- PSEN pin connect with 3V
- EA  connect with Ground  
- RESET     : Using power on Reset circuit ,but use 10K Ohm instead of 8.2K
- ICL3232 (3.3 V ersion of Max232) it's work properly ,I checked it

For FlashMagic , I tried selecting every available Baudrate
Infact, I'm not sure about PSEN, EA, and RESET pin connection.
Thank you in advanced for your advices.  :)



Post Edited (09-27-06 21:53)

Jan Waclawek

  • Full Member
  • ***
  • Posts: 220
    • View Profile
    • EFTON homepage
Re: problem :P89LV51RD2 connection
« Reply #1 on: September 28, 2006, 12:17:14 am »
> PSEN pin connect with 3V

Wrong, leave it floating.

> EA connect with Ground

Wrong, tie it to VDD

> RESET : Using power on Reset circuit ,but use 10K Ohm instead of 8.2K

Might work, but I'd recommend a proper reset IC

Jan Waclawek