I need to read the PCF8523 interrupt pin (7) on the SD datalogging shield. I do not see this pin mapped to a header in the layout. Short of a fly-wire is this pin available somewhere on the board?
Thanks
Fritz
Pin7 Breakout for PCF8523 on SD Shield
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- millercommamatt
- Posts: 837
- Joined: Tue Jul 31, 2018 4:57 pm
Re: Pin7 Breakout for PCF8523 on SD Shield
If I'm reading the schematic (https://learn.adafruit.com/assets/66497) correctly, there's a through hole in the middle of the board that should be what you want. It's labeled SQ. It's between holes labeled 3V and WP.
- fsonnichsen
- Posts: 20
- Joined: Mon Aug 26, 2013 4:44 pm
Re: Pin7 Breakout for PCF8523 on SD Shield
aha-thanks. Now I see it. It is labled CN1 in the schematic (but not labeled on the board). I ohmed it out and you are correct.
cheers
fritz
cheers
fritz
- adafruit_support_carter
- Posts: 29483
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Pin7 Breakout for PCF8523 on SD Shield
Yep. That pin is multifunctional (see datasheet). The silk references the square wave output, CLKOUT. But it's a straight connection to Pin 7 of the PCF so is also INT1:
Please be positive and constructive with your questions and comments.