PIC24FJ64GA306-I/MR Microchip Technology, PIC24FJ64GA306-I/MR Datasheet - Page 34

• Manufacturer Part Number: PIC24FJ64GA306-I/MR
• Description: 16-bit, 16 MIPS, 64 KB Flash, 8 KB RAM, 53 I/O, LCD, XLP W/Vbat 64 QFN 9x9x0.9mm
• Manufacturer: Microchip Technology

PIC24FJ128GA310 FAMILY
2.7
If an ICSP compliant emulator is selected as a debug-
ger, it automatically initializes all of the A/D input pins
(ANx) as “digital” pins. Depending on the particular
device, this is done by setting all bits in the ADnPCFG
register(s), or clearing all bit in the ANSx registers.
All PIC24F devices will have either one or more
ADnPCFG registers or several ANSx registers (one for
each port); no device will have both. Refer to
Section 11.2
(ANSx)”
The bits in these registers that correspond to the A/D
pins that initialized the emulator must not be changed
by
communication errors will result between the debugger
and the device.
DS39996F-page 34
the
Configuration of Analog and
Digital Pins During ICSP
Operations
for more specific information.
user
“Configuring
application
firmware;
Analog
Port
otherwise,
Pins
If your application needs to use certain A/D pins as
analog input pins during the debug session, the user
application must modify the appropriate bits during
initialization of the A/D module, as follows:
• For devices with an ADnPCFG register, clear the
• For devices with ANSx registers, set the bits
When a Microchip debugger/emulator is used as a
programmer, the user application firmware must
correctly configure the ADnPCFG or ANSx registers.
Automatic initialization of this register is only done
during debugger operation. Failure to correctly
configure the register(s) will result in all A/D pins being
recognized as analog input pins, resulting in the port
value being read as a logic ‘0’, which may affect user
application functionality.
2.8
Unused I/O pins should be configured as outputs and
driven to a logic low state. Alternatively, connect a 1 kΩ
to 10 kΩ resistor to V
output to logic low.
bits corresponding to the pin(s) to be configured
as analog. Do not change any other bits, particu-
larly those corresponding to the PGECx/PGEDx
pair, at any time.
corresponding to the pin(s) to be configured as
analog. Do not change any other bits, particularly
those corresponding to the PGECx/PGEDx pair,
at any time.
Unused I/Os
 2010-2011 Microchip Technology Inc.
SS
on unused pins and drive the