Microchip Technology PIC32MZ DA Series User Manual page 24

PIC32MZ DA Family Starter Kit User's Guide
DS70005311A-page 24
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2.1.4 Debug USB Connectivity
The starter kit includes a PIC24FJ256GB106 USB microcontroller that provides
debugger connectivity over USB. The PIC24FJ256GB106 MCU is hard-wired to the
PIC32 device to provide protocol translation through the I/O pins of the
PIC24FJ256GB106 MCU to the In-Circuit Serial Programming™ (ICSP™) pins of the
PIC32 device.
If an external debugger, such as MPLAB REAL ICE or MPLAB ICD3 are used with the
starter kit, it is necessary to disconnect the on-board debugger from the PIC32 device,
by removing the JP17 jumper. When the on-board debugger is required, replace the
JP17 jumper. When the JP17 jumper is installed, pin 1 must be connected to pin 3, and
pin 2 must be connected to pin 4.
2.1.5 PIC32 USB Connectivity
Users can connect to the PIC32 USB microcontroller using anyone of the following
modes:
• Host Mode – Connect the device to the Type-A connector J7, which is located on
the top of the starter kit. Using this method, a maximum of 400 mA can be
supplied from the debug USB port to the host port. If full 500 mA supply is needed,
an external supply must be connected to the application board.
• Device Mode – Connect the debug Mini-B USB cable to port J6, and then connect
the starter kit to the host by using a cable with a Type-B micro-connector to the
starter kit's Micro-A/B port J6, which can be located on the bottom of the board.
The other end of the cable must have a Type-A connector, to connect it to a USB
host.
• OTG Mode – Connect the starter kit to the OTG device by using an OTG Micro-
A/B cable to the Micro-A/B port J6, which is located on the bottom of the board.
2.1.6 External Memory Connectivity
The following three external memory interfaces are available through hardware:
• DDR2-SDRAM – 128 MB of DDR2-SDRAM is mounted on the
PIC32MZ2064DAx288 Daughter Card for the External DRAM version of the
starter kits (DM320008, DM320008-C). Whereas 32 MB of DDR2-SDRAM is
available within the package for the stacked DRAM version of the starter kits
(DM320010, DM320010-C).
• Micro-SD slot – Supports SD, SDHC, and SDXC cards at default speed (12.5
MB/s) and high speed (25 MB/s).
• SQI Flash – 4 MB of SST26VF032B Serial Quad Flash is mounted on the bottom
of the PIC32MZ DA SK Base Board.
2.1.7 Switches
Push-button switches provide the following functionalities:
• SW1: Active-low switch connected to RB13
• SW2: Active-low switch connected to RB12
• SW3: Active-low switch connected to RB14
The push-button switches do not have any debounce circuitry and require the use of
internal pull-up resistors. This enables the user to investigate software debounce tech-
niques. When Idle, the switches are pulled high (+3.3V), and when pressed, they are
grounded.
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