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		| DaveMorris 
 
 
 Joined: 13 Oct 2003
 Posts: 7
 Location: Stourbridge, England
 
 
			      
 
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				| Can PIC18F26K40 (28 pin device) support 2 UARTS |  
				|  Posted: Thu Jul 03, 2025 10:08 am |   |  
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				| Hi Can someone please confirm if the 18F26K40 support 2 UART - The data sheet is a little confusing as it suggest its supports two EUSARTs but in the pin allocation table for the 28 pin devices it only shows TX1 , RX1 etc and no reference to TX2 or RX1 - Unless obviously I am miss reading the tables
 
 
 Thanks in advance
 
 Dave
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		| dyeatman 
 
 
 Joined: 06 Sep 2003
 Posts: 1968
 Location: Norman, OK
 
 
			    
 
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				|  Posted: Thu Jul 03, 2025 1:10 pm |   |  
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				| It looks like to me you have to PPS assign TX2 and RX2 somewhere to use them since they don't show in the pin map.  They are both defined
 in the header file and chip editor so I would try it to see what happens.
 Be sure to turn of any other function on the pins you select..that's
 bitten me a couple of times.
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		| temtronic 
 
 
 Joined: 01 Jul 2010
 Posts: 9589
 Location: Greensville,Ontario
 
 
			    
 
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				|  Posted: Thu Jul 03, 2025 2:43 pm |   |  
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				| from the data sheet(took a bit...)... The RXx/DTx and TXx/CKx input pins are selected with the RXxPPS and TXxPPS registers,
 respectively. TXx, CKx, and DTx output pins are selected with each pin’s RxyPPS register.
 ....
 
 dang nab 'new chip' to me , has PPS !
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