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MPLAB ? Starter Kit for PIC24H Microcontrollers User’s Guide
4.3.1
Debug Components
The following components support the debug function of the starter kit. See Appendix
A. “Schematics” for debug schematics.
4.3.1.1
MINI-B USB CONNECTOR (J1)
Provides system power and bidirectional communication between the host PC and
starter kit.
4.3.1.2
MCP1727 (U1)
3.3V Linear regulator. Regulates the USB unregulated voltage to 3.3 volts (with respect
to V SS ) and supplies the starter kit with system power.
4.3.1.3
LOW V CE SATURATION PNP TRANSISTOR SWITCH (Q1)
Provides target power (via high-side switching) to the PIC24HJ128GP504 (and
ancillary circuitry) via control by the PIC18F67J50 programming/debugging MCU.
4.3.1.4
DEBUG STATUS LED (D18)
When lit, indicates that communication between the starter kit and MPLAB IDE has
been successfully established.
4.3.1.5
SYSTEM POWER STATUS LED (D19)
When lit, indicates that the starter kit is powered via the USB.
4.3.1.6
PIC18F67J50 MCU (U2)
Controls the programming/debugging operations of the target PIC24HJ128GP504
device.
4.3.1.7
25LC010A SERIAL EEPROM (U3)
Provides nonvolatile parameter storage for the PIC18F67J50 MCU.
4.3.2
Application Components
The following components support the application portion of the starter kit. See
Appendix A. “Schematics” for application schematics.
4.3.2.1
PIC24HJ128GP504 (MCU) (U5)
The PIC24HJ128GP504 microcontroller unit (MCU) provides the computation and
processing resource for application development on the starter kit. This MCU features
128 KB of program Flash and 4 KB RAM. The application can either use the on-chip
FRC or the external 12 MHz signal as clock source.
4.3.2.2
SPEAKER (SP2)
The speaker is connected to the Output Compare (OC) module. The OC module
produces the PWM-modulated speech signal that is played through the speaker after
filtering.
DS51780A-page 30
? 2008 Microchip Technology Inc.
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