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Hi, I want to use the reset pin on the LPC932. This pin (P1^5) will reset the micro after bringing it low. My question is about the procedure. 1. I write a 1 (high) to this pin (reset). 2. Then I put a NO (two pin) button between the reset pin and ground. 3. When I press the button (its pins close) the reset pin should go low and a reset is performed. Is this the right way to do it? Thank you
from the users guide: P1.5 Port 1 bit 5. (Input only)/RST External Reset input during power-on or if selected via UCFG1. When functioning as a reset input a low on this pin resets the microcontroller, causing I/O ports and peripherals to take on their default states, and the processor begins execution at address 0. Also used during a power-on sequence to force In-System Programming mode. That should answer your question Erik
Erik, I read the manual before I posted the question. The software and coniguration is fine. My question is about using the switch the way I described before. I do not want to damage the micro. Thanks
Any 932 pin that is not configured as push-pull can be pulled low with no damage to the chip. Pulling a pin high is another story. Erik
So, in other words, I could do it the way I describe previously. Right? Thanks