HI
i m using p89v51rd2fn with 12mhz crystal,max 232 for serial progrmming.
i m not able to enter in isp mode. i hav cheked the intgrity of serial line,its fine.
i knw that after reset the 'U' character must be sent to uC to enter in ISP. and flash magic do the same thing.
i want to knw details of software and hardware methods to enter in ISP MODE.
wat shld be the status of EA/ , PSEN for entering ISP MODE??
shld EA/ PIN pulled high on rest for entering in ISP mode??
plz reply.
NIRBHAY
Post Edited (04-23-06 08:24)
i m using p89v51rd2fn with 12mhz crystal,max 232 for serial progrmming.
i m not able to enter in isp mode. i hav cheked the intgrity of serial line,its fine.
i knw that after reset the 'U' character must be sent to uC to enter in ISP. and flash magic do the same thing.
i want to knw details of software and hardware methods to enter in ISP MODE.
wat shld be the status of EA/ , PSEN for entering ISP MODE??
shld EA/ PIN pulled high on rest for entering in ISP mode??
plz reply.
NIRBHAY
Post Edited (04-23-06 08:24)