PIC micro controller programming issue

[Murugesh_89]

Hi,
I am using PIC18F4520. The burning of code in the IC was successful for some time. Now it showing the voltage error. The voltage at the MCLR pin is 1.13V now.
I gave the connection as Vcc(5V) - 4.7K - MCLR - 0.1uF - Gnd.
Is the ic got damaged?

Thanks,
Murugesh

 

[tpetar]

What programmer you try to use MCLR is very low.

 

[Murugesh_89]

PICKIT 2 programmer

 

[tpetar]

What circuit you use for PICKit 2 for DIY or you buy from Microchip ?

Programmer works earlier fine ?

 

[sagar karia]

may be ic has got damaged...but check the brown out reset....

 

[tpetar]

MCLR voltage must be ok when you test programmer without uC, you can do test.

 

[Alkeshwr]

Did u ever supply the uC above 5V? If yes, then I claim the uC is damaged!

 

[tpetar]

Did u ever supply the uC above 5V? If yes, then I claim the uC is damaged!

Manufacturer Datasheet page 321
https://ww1.microchip.com/downloads/en/DeviceDoc/39631E.pdf

Absolute Maximum Ratings
Voltage on VDD with respect to VSS -0.3V to +7.5V (max workable 5,5V)
Voltage on MCLR with respect to VSS 0V to +13.25V (normal 12V)