kirti_sonawane999
Junior Member level 3
hi, i am trying to dump program in 89V51RD2BN IC using Serial programming, but not working.
when I click "start" on Flash magic. It shows an error of "Reset the device in ISP mode now" after resetting, nothing happens.
I have used MAX232N IC
10 uF for it capacitors...
serially interface to PC by RS232 and DB9...
here are the details-----
controller interfacing is correct...
oscillator is O.K. (12 MHz and two 33 Pf)
reset switch is O.K. (it is showing 5.02V on pin 9 when I press reset switch)
I have connected EA to Vcc
I have check power supply it is showing 5.02 V supply on controller and MAX232 as well.
I have checked voltages on MAX 232 IC
pin 2. ----9.2V
pin 6 ----- (-8.57V)
I have checked voltages on DB9 connector
pin no 2 (Rxd)-----(-8.58V)
pin no 3 (Txd)------(0.00V)
pin no 5 is grounded
Still It didn't worked .:?:
Please Help :-( :-(
and one more thing..
I have used a supply of adaptor of 12V 500mA
connected to regulator . ( I do not give capacitors to 7805)
And output given to 89V51RD2 and MAX232 .
Is it ok?
It is showing current 12.3mA to microcontroller.
and 3.4mA to MAX 232 IC when running..
(I have checked in serial connection)
Please reply........ **broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
when I click "start" on Flash magic. It shows an error of "Reset the device in ISP mode now" after resetting, nothing happens.
I have used MAX232N IC
10 uF for it capacitors...
serially interface to PC by RS232 and DB9...
here are the details-----
controller interfacing is correct...
oscillator is O.K. (12 MHz and two 33 Pf)
reset switch is O.K. (it is showing 5.02V on pin 9 when I press reset switch)
I have connected EA to Vcc
I have check power supply it is showing 5.02 V supply on controller and MAX232 as well.
I have checked voltages on MAX 232 IC
pin 2. ----9.2V
pin 6 ----- (-8.57V)
I have checked voltages on DB9 connector
pin no 2 (Rxd)-----(-8.58V)
pin no 3 (Txd)------(0.00V)
pin no 5 is grounded
Still It didn't worked .:?:
Please Help :-( :-(
and one more thing..
I have used a supply of adaptor of 12V 500mA
connected to regulator . ( I do not give capacitors to 7805)
And output given to 89V51RD2 and MAX232 .
Is it ok?
It is showing current 12.3mA to microcontroller.
and 3.4mA to MAX 232 IC when running..
(I have checked in serial connection)
Please reply........ **broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**