MCLR used as a reset

[sparky72]

Looking for a little confirmation so I don't screw things up. I want to use the MCLR as a reset from sleep on a 16f628A pic. Are these steps correct?

1. In configuration settings set MCLR enabled.

2. Use a 4.7k to 10k pull up resistor to VDD.

3. Place momentary switch through a 50 to100 ohm resistor to VSS.

Thanks in advance for any info I may receive.

 

[Jon Chandler]

10k is perfect for the pullup. No need for the 50 - 100 ohm resistor.

 

[blueroomelectronics]

The 50-100 ohm resistor is used only if you have a programmer attached. It would keep the VPP driver from seeing a dead short if the button was pressed while programming.

 

[sparky72]

10k is perfect for the pullup. No need for the 50 - 100 ohm resistor.

Bill & Jon Thanks for the quick responses. Also Is #1 also correct.

 

[wannaBinventor]

yes #1 is correct

 

[birdman0_o]

You can also use an interrupt on change to wake you up from sleep if you want the uC to continue from where it was! Depends on application of course