ISP-P89LPC952

[B.Murali krishnan]

Hello,

   I am using P89LPC 952 for my Design in Elevator application.I previously used 89c51RD2BA chip & it was working well with Flash magic tool.

   I want ISP circuit for P89LPC952 chip to use with flash magic.Kindly guide me.

[Andy Ayre]

Copy the circuit uses for the MCB900. There is a link to the schematic diagram on the Flash Magic web page.

[B.Murali krishnan]

Hello,

I am having two question regarding the circuitry.

1.Shall i use MAX 563 instead of MAX 3221[Difficult to purchase this chip] in ISP circuitry.


2.From Laptop serial port to the ISP hardware serial port shall i use 1: 1 connection Serial comport cable or any twisted cable if any give details


-----B.MURALI KRISHNAN

[Andy Ayre]

As long as the device is an RS-232 transceiver then it will work.

All you need is a standard serial cable - i.e. the kind you get with consumer electronics. Very cheap to purchase. Or you can make your own with a shield to reduce EMI.

[erikm]

As long as the device is an RS-232 transceiver then it will work.

AND A 3.3V chip (which the max563 is) but someone might read the above wrong.

Someone in Asia sell "devboards" (a bootleg copy of the manufacturers devboard) for a non-Philips 3V3 chip using a 5V transciever and there are forum posts "I use this devboard and I have this problem"

Erik