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Explorer 16/32 Development Board User's Guide - Developer Help
Introduction
The Explorer 16/32 Development Board
demonstration, and testing platform for many families of Microchip 16-bit and 32-bit
microcontroller devices. The board features all the necessary hardware (such as
power supply, user interface, communications and I/O connectivity) to begin
developing and debugging a complete embedded application. The Explorer 16/32
board accepts 100-pin microcontroller "Plug-In Module" (PIM) daughter boards
designed for the Explorer 16 or Explorer 16/32 Development Board (PIMS)
(http://www.microchip.com/pims). In addition to the hardware features provided by
the Explorer 16/32, hardware expansion is possible through the use of mikroBUS™
and PICtail™ Plus accessory boards.
Board Schematics and Bill of Materials
Full schematics and related information for the Explorer 16/32 Development Board
can be downloaded below:
Files
Schematics (https://microchip.box.com/shared/static
/emwzodzp4eklnsa65jw77nhqxtz6d8qp.pdf)
Bill of Materials (https://microchip.box.com/shared/static
/bse2ehe9ugdt5qwljzqf2tdi4zl7d56r.pdf)
PIM and PICtail Plus Pinout Info (https://microchip.box.com/shared/static
/0ohr115y3h27gpw3qhbe61d2urrmq4mz.pdf)
Explorer 16/32 Development Board Features
Hardware features of the Explorer 16/32 Development Board are highlighted and
summarized below:
1 z 18
http://microchipdeveloper.com/boards:explorer1632
is intended
as a development,
7.6.2017 8:59
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Summary of Contents for Microchip Developer Explorer 16/32
- Page 1 Explorer 16 or Explorer 16/32 Development Board (PIMS) (http://www.microchip.com/pims). In addition to the hardware features provided by the Explorer 16/32, hardware expansion is possible through the use of mikroBUS™ and PICtail™ Plus accessory boards. Board Schematics and Bill of Materials...
- Page 2 /PIMs)). Note: The TQFP microcontroller (U14) in the center of the PIM area is part of the PICkit™ On Board circuit (#7 below) and is not intended for running application code. In order to develop application code for the Explorer 16/32 Development Board, a PIM must always be installed on U1A.
- Page 3 Explorer 16/32 Development Board User's Guide - Developer Help http://microchipdeveloper.com/boards:explorer1632 RJ11 ICSP™ programming/debug interface – compatible with MPLAB® ICD/REAL ICE™, and other RJ11 based Microchip programming/debug tools. 6-pin interface for the PICkit programmer (when used in conjunction with a 6-pin 100 mil male-male header).
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Page 4: Getting Started
Getting Started Before using the Explorer 16/32 Development Board, it is first necessary to have a 100-pin processor Plug-In Module (PIM) installed on the male headers U1A. A PIM is always required, as the microcontroller U14 (located in the center of the PIM area) is part of the PICkit On Board programmer/debugger circuit, and is therefore not intended for running application related code. - Page 5 "Pxx" where xx is a number 1-100. The Pxx number corresponds with the U1A male PIM header pin number associated with the net. Nets that are also connected to one or more dedicated hardware features on the Explorer 16/32 Development Board have net names with underscores and suffixes denoting their associated feature(s).
- Page 6 /0ohr115y3h27gpw3qhbe61d2urrmq4mz.pdf). Powering the Explorer 16/32 Development Board The Explorer 16/32 board can be powered from any one or more of four different connectors: USB micro-B for PKOB (J18), USB Type-C (J24), USB micro-B for USB-Serial converter (J40), or the DC barrel jack (J12). The three USB power...
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Page 7: Jumper Options
Q5, allowing for a continuous short circuit to be sustained when the ambient conditions are near 25° Celsius. On-Off toggle power switching of the 5 V and 3.3 V rails on the Explorer 16/32 board is implemented with U3 + S7 + the surrounding resistor/capacitor components. The dual inverter U3 is connected in a circular chain, providing positive feedback and an effective 1-bit latching memory cell. - Page 8 JP2 – Jumper JP2 can be opened to effectively disable the LEDs D3-D10 on the Explorer 16/32 board, so as to minimize loading of the I/O pins connected to the LEDs. In order to use any of the LEDs D3-D10 as indicators, JP2 must be capped.
- Page 9 Explorer 16/32 Development Board User's Guide - Developer Help http://microchipdeveloper.com/boards:explorer1632 it will not be USB compliant. This jumper should be left fully open in USB device only, USB Type-A embedded host, or non-USB applications, so as to disable VBUS output sourcing in these types of applications.
- Page 10 Explorer 16/32 Development Board User's Guide - Developer Help http://microchipdeveloper.com/boards:explorer1632 host). In non-USB applications, the jumper caps may be removed altogether, so as to minimize interference on the P33_CC1 and P32_CC2 nets. However, if the application wishes to obtain USB bus power from the USB Type-C connector, the...
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Page 11: Oscillator Options
PIM microcontroller VDD supply current, J50 should be used instead, as the +3.3 V rail is used to supply additional circuitry on the Explorer 16/32 board, such as the LCD module, MCP2221A, PKOB circuit, etc., in addition to the PIM microcontroller. - Page 12 The MCP2221A provides USB to UART and USB to I C serial adapter functionality, which can be used to interface the PIM microcontroller and/or other hardware to a host (e.g., a PC serial terminal application). On the Explorer 16/32 Development Board, the MCP2221A is accessible through USB micro-B connector J40. USB Driver Installation When using the MCP2221A on a Windows®...
- Page 13 UART TX pin (which would normally be connected to the PIM microcontroller via jumper J37). Similarly, characters originating from the Explorer 16/32 Development Board (or attached accessories) will be transmitted to the host terminal program, when J38 is capped. Although any standard third party serial terminal program can be used, Microchip provides an example USB plug and play aware serial terminal program, called "USB_Serial_Terminal", which can be...
- Page 14 USB port to a different port, on a given machine). The MCP2221A that comes on the Explorer 16/32 Development Board is pre-programmed with USB VID = 0x04D8, and PID = 0x00DD, but these default values can be changed with the MCP2221A utilities.
- Page 15 Interface), it is necessary to ensure that jumpers J41 and J42 are both capped. Other Usage Tips When using the toggle power switch S7 to power cycle the Explorer 16/32 Development Board, all circuitry on the +5V and +3.3V/VDD_PIM supply rails on the board will be power cycled, including the MCP2221A.
- Page 16 Explorer 16/32 Development Board User's Guide - Developer Help http://microchipdeveloper.com/boards:explorer1632 detach is detected (and similarly re-open the serial port automatically, if a plug and play MCP2221A attachment event is detected). Example code demonstrating how this can be accomplished is included in the Microchip "USB_Serial_Terminal"...
- Page 17 Explorer 16, by the silk screen and PCB copper layer revision numbers. The Explorer 16/32 board has the text “EXPLORER 16/32” prominently printed in the upper right quadrant of top side of the PCB, and will have board revision number of at least 6.3 (printed on the bottom side copper layer, in the upper middle of the...
- Page 18 Explorer 16/32 Development Board User's Guide - Developer Help http://microchipdeveloper.com/boards:explorer1632 Explorer 16/32 board with select PIMs immediately without strictly needing access to a dedicated programming/debug device. A conventional RJ11 ICSP connector is still retained for use with dedicated Microchip programming/debug tools.
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