48GA004 datasheet(216/268 Pages) MICROCHIP

216 / 268 page

PIC24FJ64GA004 FAMILY

DS39881D-page 216

 2010 Microchip Technology Inc.

24.6

In-Circuit Serial Programming

PIC24FJ64GA004 family microcontrollers can be seri-

ally programmed while in the end application circuit.

This is simply done with two lines for clock (PGCx) and

data (PGDx) and three other lines for power, ground

and the programming voltage. This allows customers to

manufacture boards with unprogrammed devices and

then program the microcontroller just before shipping

the product. This also allows the most recent firmware

or a custom firmware to be programmed.

24.7

In-Circuit Debugger

When MPLAB® ICD 2 is selected as a debugger, the

in-circuit debugging functionality is enabled. This func-

tion allows simple debugging functions when used with

MPLAB IDE. Debugging functionality is controlled

through the EMUCx (Emulation/Debug Clock) and

EMUDx (Emulation/Debug Data) pins.

To use the in-circuit debugger function of the device,

the design must implement ICSP connections to

MCLR,

VDD,

VSS,

PGCx,

PGDx

and

the

EMUDx/EMUCx 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.

48GA004 Datasheet(PDF) 216 Page - Microchip Technology