Microchip Technology MA330027 Data Sheet

Page of 622
 2009-2012 Microchip Technology Inc.
DS70616G-page 219
dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
g) The TRIS registers control only the digital I/O
output buffer. Any other dedicated or remap-
pable active “output” will automatically over-
ride the TRIS setting. The TRIS register does
not
 control the digital logic “input” buffer.
Remappable digital “inputs” do not automati-
cally override TRIS settings, which means
that the TRIS bit must be set to input for pins
with only remappable input function(s)
assigned.
h) All analog pins are enabled by default after
any Reset and the corresponding digital input
buffer on the pin is disabled. Only the Analog
Pin Select registers control the digital input
buffer,  not the TRIS register. The user must
disable the analog function on a pin using the
Analog Pin Select registers in order to use any
“digital input(s)” on a corresponding pin, no
exceptions.
11.6
I/O Resources
Many useful resources related to I/O are provided on
the main product page of the Microchip web site for the
devices listed in this data sheet. This product page,
which can be accessed using this 
, contains the
latest updates and additional information.
11.6.1
KEY RESOURCES
• Section 10. “I/O Ports” (DS70598) in the 
“dsPIC33E/PIC24E Family Reference Manual”
• Code Samples
• Application Notes
• Software Libraries
• Webinars
• All related “dsPIC33E/PIC24E Family Reference 
Manual” Sections
• Development Tools
Note:
In the event you are not able to access the
product page using the link above, enter
this URL in your browser: