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01/02/08
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Other Information
To obtain the most recent and complete documentation for this demonstration board, including:
- User's Guide - Board Description - Board Schematics
- Source Code - Application Examples - Links to Web Seminars
please refer to the Microchip web site: www.microchip.com/usb
PIC24FJ256GB110 PIM Manual
Overview
The PIC24FJ256GB110 PIM is designed to demonstrate the capabilities of the PIC24FJ256GB110 family
using the Explorer 16 Demonstration Board kit and the PICtail™ Plus Daughter Boards. The
PIC24FJ256GB110 is specifically designed to be used in conjunction with the USB PICtail Plus Daughter
Board to allow development of USB applications. Because a few pins on the device are dedicated to the
USB module, several of the existing features of the Explorer 16 must be rerouted on the
PIC24FJ256GB110 PIM. The Peripheral Pin Select (PPS) feature, available on this device, allows the
existing peripherals to be remapped to the new I/O pins.
Features
• Enables designs for USB device, embedded host and On-The-Go (OTG) when used in conjunction
with the USB PICtail Plus Daughter Board.
Hardware Options
The PIC24FJ256GB110 PIM has been configured to run with the core voltage regulator enabled and the
USB voltage regulator disabled.
• Disabling the core voltage regulator – R4 pulls ENVREG high enabling the core voltage regulator. In
order to modify the board such that the device runs with the voltage regulator disabled, populate R3
with a zero ohm resistor. Once the core voltage regulator is disabled, a voltage of 2.0V-2.7V needs to
be applied to the V
DDCORE pin. R2 has been added such that a zero ohm resistor that is populated
here will short V
DDCORE to VDD. This would require that the Explorer 16 be run from an external power
supply of the correct voltage and not from the on-board voltage regulators. Alternatively, this pad can
be used to attach an external power supply just to V
DDCORE such that the pads will still operate at the
Explorer 16 V
DD, but the PIC24FJ256GB110 core will run at the lower supplied voltage.
Signal Interface
Below is a table of all the pins on the device that are remapped.
Tips for Using the PIC24FJ256GB110 PIM
• When migrating from a PIC24FJ128GA010 PIM to the PIC24FJ256GB110 PIM, please note
that all code will need to be modified in order to map the correct peripheral to the corresponding
pin. For more information about PPS, please see the “PIC24FJ256GB110 Family Data Sheet”.
• Note in the above table, the RB10 of the PIC24FJ256GB110 is connected to two pins on the
Explorer 16 board.
PIC24FJ256GB110 Explorer 16
Pin # Pin Function Pin # Pin Function PIC24FJ128GA010 Pin
54 V
BUS 1 DCI RG15
1 RG15 8 LCD RC3
95 RG14 9 LCD RC4
34 RB10
(1)
25 N/A RB0
34 RB10
(1)
34 PMPA13 RB10
52 RF2/RP30 51 UART1 TX RF3
9 RC4/RPI41 52 UART1 RX RF2
77 RD2/RP23 54 SDI to PIC18F4550 RF7
25 RB0/RP0 55 SCK to PIC18F4550 RF6
67 RA15/RPI35 56 SDA1 RG3
66 RA14/RPI36 57 SCL1 RG2
8 RC3/RPI40 66 INT3 RA14
79 RD12/RPI42 67 INT4 RA15
56 RG3/D- 89 N/A RG1
57 RG2/D+ 90 N/A RG0
51 RF3/RP3 95 DCI RG14
Note 1:
The RB10 pin on the PIC24FJ256GB110 PIM is connected to two pins on the Explorer 16 demo board.
Microchip Technology Inc. • 2355 West Chandler Blvd. • Chandler, AZ 85224-6199
www.microchip.com
The Microchip name and logo and the Microchip logo are registered trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries. PICtail is a trademark of Microchip Technology Incorporated in the U.S.A. and other countries. All
other trademarks mentioned herein are property of their respective companies. © 2008, Microchip Technology Incorporated,
Printed in the U.S.A. All Rights Reserved. 1/08
*DS39908A* DS39908A
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