Messages

Respected All,

I am using P89V51RD2 for making a project. The project includes the data to be written in the EEPROM of the microcontroller.

Could you please guide me how can I write in FLASH MEMORY using the FLASH MAGIC.

Is it required to invoke the BOOT LAODER for doing this.

I dont have the parallel programmer.

regards
H S Thakur

Yes, I tried a simple program, blinkyi t's working OK.

The problem coming with this chip is that it does not respond in terminal
program i.e. hyper terminal


Harnam

The same program when I download on first chip  on the same development board it works OK.
I tried ADC program in hyper terminal where temp reading can be read.

regards

HS THAKUR

YES Sir

NO, SIR,


I just simply downloaded the hex file for key pad program.
Opened windows hyper terminal and
selected Port,baud rate 9600,data bit 8, Parity None,Stop bit 1,
Hardware None


I am trying to test the matrix key pad program
When any key between S1 to S16 is pressed it displays the corresponding number on the hyper terminal saying

I have tried more than 20 pieces, same problem.
In ISP mode it's Ok, I can download the hex files without any problem.
LCD programs etc are working O.K.

This problem is coming in the the terminal program only. When I insert
the first chip, it.s working

No communication is taking place, the chip does not responds.

Regards



HS THAKUR

The Device signature is shown as below :

Manufacturer's ID         BF
Device ID                      91

In the Flash Magic there is only one selection for P89V51rd2
which I have selected.

Hello  there !

When I was using this uC
P89V51RD2FA,
CN6014.00
KzNO435 AC
Everything was cool, I could Communicate with hyper terminal and test my programs.



The next assignment I bought from the dealer is with the following
description and now  I can not establish the communication with the
hyper terminal
P89V51RD2FA
CP2821.00
K1G0505AC


What could be the reason ?

Regards

HS THAKUR



Post Edited (06-06-06 04:27)

" You can't use the same hex file for both devices because there are numerous differences. "

Sir
can you name the differences or guide me


Regards

I was using P89C51RD2HBP, It was working OK. Recently I changed over to
P89V51 RD2BN.

After selecting P89VRD2 device, baud rate 9600, (Selection of Oscillator Frequency window does not appear), the hex file is downloaded
successfully. When I interface with the periphrials it does not work at all,
whereas I tried with P89C51RD2HBP, with 11.0592 Hz, it works without any problem.

Please help me to get rid of this problem. Is P89V51RD2BN is deifferent ?

Regards