User manual

Overview
The PIC24FJ64GA004 PIM is designed to demonstrate the capabilities of the PIC24FJ64GA004
family using the Explorer 16 Demonstration Board kit and the PICtail™ Plus daughter boards. The
PIC24FJ64GA004 is a 44-pin device with the new Peripheral Pin Select (PPS) feature. The PPS
feature of this PIC24F family allows many of the digital peripherals on the part to be remapped
to use any of a number of pins on the device. This allows for signifi cant improvements in ease of
design and helps to reduce cost by allowing for the smallest possible size devices to be used.
The following two tables detail the pin mapping of the 44-pin device to the 100-pin PIM header.
• The 44-pin to 100-pin table lists the device pins and shows what functions are mapped to each.
This table is most useful for viewing multiplexing confl icts which prevent some functions from
being used simultaneously.
• The 100-pin to 44-pin table shows a listing of the Explorer 16 functions and what device pin is
mapped to that function.
PIC24FJ64GA004 PIM Limitations
The result of multiplexing the functions from a 44-pin part to the 100-pin PIM header is that many of
the functions cannot be used simultaneously. All of the built-in functionality on the Explorer 16 board
can be used simultaneously, with the exception of the LEDs. LEDs are multiplexed on switch and
PMP lines, which means they will not always be usable if these functions are in use.
The PICtail Plus daughter boards have similar limitations. All daughter boards will work by
themselves, however, most PICtail Plus daughter boards will not work if two are installed
simultaneously. Additionally, a PICtail Plus daughter board may not work with all of the default
Explorer 16 functionality. If a PICtail Plus daughter board is designed to work with a Microchip stack,
the stack will need to be modifi ed to function with the PIM pinout and PPS feature.
Please check the pinouts of the components you are using to ensure compatability before attempting
to use multiple peripheral functions or PICtail Plus daughter boards at the same time.
Introducing the PIC24FJ64GA004 PIM
PIC24FJ64GA004 PIM Features
Due to the fl exibility allowed by the PPS feature, the 44-pin device is capable of performing all of the
base functions on the 100-pin Explorer 16 board. In addition, the PIM is compatible with most of the
PICtail Plus daughter boards for the Explorer 16.
Tips for Using the PIC24FJ64GA004 PIM
• The Explorer 16 LEDs are multiplexed with a number of functions and so may not be useful in
some situations. Make sure to check the mapping tables for confl icts.
• The PIC24FJ64GA004 port pins are not mapped to the corresponding port I/O on the Explorer 16.
Make sure to use the following pinout tables as a cross reference to ensure you use the correct
device pin in your application.
• Many of the peripherals used by the Explorer 16 and PICtail Plus daughter boards are
implemented on pins with analog functionality. These peripherals may not confl ict with analog
features on other PIC24F PIMs. Make sure to add any necessary code to override this analog
functionality in your application or in the stack application you are using.
• Some Explorer 16 boards have a 5V LCD. If you are using a function which is multiplexed onto the
PMP pins on one of these boards, it may be necessary to manually drive the pins initially. The pin
must be driven in order to ensure the bus is driven to either VDD or VSS, instead of fl oating at 5V.
Zero ohm resistors on pins 99 and 100 of the PIM allow the PMP functionality to be removed from
these pins. This is done in order to prevent the I2C2 from having a bus collision with the PMP data
lines when they are connected to the 5V LCD.
• UART1 and SPI1 are multiplexed onto the same device pins as the temperature sensor and
potentiometer on the Explorer 16 board. Jumpers are provided to remove the analog temperature
sensor and potentiometer functions from the PIM. Removing the jumpers will allow the SPI1 and
UART1 to function correctly.
• Many PICtail Plus daughter boards use the EEPROM, SPI and UART2 (which has the RS-232 port
functionality). These functions were mapped to ensure that they can be used together to allow support for
these boards.
Table 1: 44-Pin to 100-Pin Pinout
Pin # PIC24FJ64GA004 Pinout Pin # PIM Func #1 Pin # PIM Func #2 Pin # PIM Func #3
1 RP9/SDA1/CN21/PMPD3/RB9 59 RA3/SDA2 99 PMD3
2 RP22/CN18/PMPA1/RC6 92 RA7 23 RB2/SS1
(1)
43 PMA1
3 RP23/CN17/PMPA0/RC7 44 PMA0
4 RP24/CN20/PMPA5/RC8 67 RA15/INT4
(1)
48 RD15/U1RTS
(1)
10 PMA5/SCK2
5 RP25/CN19/PMPA6/RC9 50 U2TX 66 RA14/INT3
(1)
29 PMA6
6 DISVREG 75 GND
7V
CAP/VDDCORE 85 VCAP/VDDCORE
8 RP10/CN16/PMPD2/RB10 98 PMD2
9 RP11/CN15/PMPD1/RB11 94 PMD1
10 RP12/CN14/PMPD0/RB12 91 RA6 93 PMD0
11 RP13/CN13/PMPRD/RB13 82 PMRD
12 PMPA10/RA10/TMS 17 RA0/TMS 83 RD6
13 PMPA7/RA7/TCK 38 RA1/TCK 80 RD13 28 PMA7
14 AN10/CV
REF/RTCC/RP14/CN12/
PMPWR/RB14
68 RTCC/RD8
(1)
81 PMWR
15 AN9/RP15/C11/PMPCS1/RB15 55 SCK1 7 RC2/T3CK
(1)
71 PMCS1
16 AV
SS 31 AVSS
17 AVDD 30 AVDD
18 NMCLR 13 NMCLR
19 AN0/CV
REF+/CN2/RA0 25 RB0/AN0
(1)
72 RD0
(1)
33 RB9/AN9
(1)
20 AN1/CVREF-/CN3/RA1 24 RB1/AN1
(1)
32 RB8/AN8
(1)
9 RC4
(1)
21 AN2/C2IN-/RP0/CN4/RB0/PGD1 27 PGD
22 AN3/C2IN+/RP1/CN5/RB1/PGC1 26 PGC
23 AN4/C1IN-/RP2/SDA2/CN6/RB2 56 SDA1/RG2
(1)
87 RF0
(1)
19 RE9/INT2
(1)
24 AN5/C1IN+/RP3/SCL2/CN7/RB3 57 SCL1/RG3
(1)
88 RF1
(1)
47 RD14/U1CTS
(1)
25 AN6/RP16/CN8/RC0 21 RB4/AN4 53 SDO1 51 U1TX
26 AN7/RP17/CN9/RC1 20 RB5/AN5 54 SDI1 52 U1RX
27 AN8/RP18/CN10/PMPA2/RC2 22 RB3/AN3
(1)
18 RE8/INT1
(1)
14 PMA2/SS2
28 V
DD 16 VDD
29 VSS 15 VSS
30 OSCI/CLKI/CN30/RA2 63 OSC1
31 OSCO/CLKO/CN29/RA3 64 OSC2
32 PMPA8/RA8/TDO 61 RA5/TDO 79 RD12
33 SOSCI/RP4/CN1/RB4 73 SOSCI
34 SOSCO/T1CK/CN0/RA4 74 SOSCO
35 PMPA9/RA9/TDI 60 RA4/TDI 84 RD7
36 RP19/CN28/PMPBE/RC3 49 U2RX 6 RC1/T2CK
(1)
78 PMBE
37 RP20/CN25/PMPA4/RC4 40 RF12/U2CTS
(1)
90 RG0
(1)
11 PMA4/SDI2
38 RP21/CN26/PMPA3/RC5 39 RF13/U2RTS
(1)
89 RG1
(1)
12 PMA3/SDO2
39 V
SS 36 VSS
40 VDD 37 VDD
41 RP5/ASDA1/CN27/PMPD7/RB5 5 PMD7
42 RP6/ASCL1/CN24/PMPD6/RB6 4 PMD6
43 RP7/INT0/CN23/PMPD5/RB7 3 PMD5
44 RP8/SCL1/CN22/PMPD4/RB8 58 RA2/SCL2 100 PMD4
Note 1: This pin is a common or required signal for PICtail™ Plus daughter boards.