dsPIC33FJ32MC204 Microchip Technology, dsPIC33FJ32MC204 Datasheet - Page 225

• Manufacturer Part Number: dsPIC33FJ32MC204
• Description: (dsPIC33FJ16MC304 / dsPIC33FJ32MC20x) 16-bit Microcontrollers
• Manufacturer: Microchip Technology

20.5
dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304
devices implement a JTAG interface, which supports
boundary scan device testing, as well as in-circuit pro-
gramming. Detailed information on this interface will be
provided in future revisions of the document.
20.6
dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304
family digital signal controllers can be serially
programmed while in the end application circuit. This is
done with two lines for clock and data and three other
lines for power, ground and the programming
sequence. Serial programming allows customers to
manufacture boards with unprogrammed devices and
then program the digital signal controller just before
shipping the product. Serial programming also allows
the most recent firmware or a custom firmware to be
programmed. Refer to the “dsPIC33F/PIC24H Flash
Programming Specification” (DS70152) document for
details about In-Circuit Serial Programming (ICSP).
Any of the three pairs of programming clock/data pins
can be used:
• PGC1/EMUC1 and PGD1/EMUD1
• PGC2/EMUC2 and PGD2/EMUD2
• PGC3/EMUC3 and PGD3/EMUD3
© 2007 Microchip Technology Inc.
JTAG Interface
In-Circuit Serial Programming
Preliminary
20.7
When MPLAB
circuit debugging functionality is enabled. This function
allows simple debugging functions when used with
MPLAB IDE. Debugging functionality is controlled
through the EMUCx (Emulation/Debug Clock) and
EMUDx (Emulation/Debug Data) pin functions.
Any of the three pairs of debugging clock/data pins can
be used:
• PGC1/EMUC1 and PGD1/EMUD1
• PGC2/EMUC2 and PGD2/EMUD2
• PGC3/EMUC3 and PGD3/EMUD3
To use the in-circuit debugger function of the device,
the design must implement ICSP connections to
MCLR, V
pin pair. In addition, when the feature is enabled, some
of the resources are not available for general use.
These resources include the first 80 bytes of data RAM
and two I/O pins.
In-Circuit Debugger
DD
, V
®
SS
ICD 2 is selected as a debugger, the in-
, PGC, PGD and the EMUDx/EMUCx
DS70283B-page 223