The mikromedia PLUS for PIC32MX7 is a compact development system with lots of on-board peripherals which allows development of hand-held devices with multimedia content. The central part of the system is the 32-bit Microchip PIC32MX795F512L microcontroller. The mikromedia+ for PIC32MX7 features integrated modules such as stereo MP3 codec, 4.3-inch TFT 480×272 touch screen display, port expander, accelerometer, microSD card slot, buzzer, IR receiver, RGB LED, PIN photodiode, temperature sensor, 2.4GHz RF transceiver, Ethernet transceiver, 8Mbit Flash memory, Li-Poly battery charger, etc. The board also contains a mini-B USB connector, power screw terminals, On/Off switch, and more.
A color user manual and code examples are included. The board comes pre-programmed with a USB HID bootloader, so you won't have to spend a penny more on external programmers. If you do want to, 2×5-pin pads are available for using a mikroProg for PIC.
All unused microcontroller pins are available via pads along the sides of the board. The board measures 119.54 × 78 mm (4.71 × 3.07 inches).
PIC32MX7 Multimedia Board Features
PIC32MX795F512L microcontroller This 100-pin high-performance 32-bit microcontroller has integrated modules, such as 512K of Flash and 128K of RAM, allowing it to handle demanding applications easily.
- Up to 125 DMIPS operation (80 MHz)
- 512K Bytes of Flash memory
- 128K Bytes of RAM
- Up to 85 I/O pins
- 16-bit timers
- 8 MHz internal oscillator, 32 kHz RTCC, PLL
- 6x UART, 4x SPI, 5x I2C, 2x CAN, ADC
- Ethernet, USB, etc.
SSD1963 Graphics Controller This controller handles the TFT display. It has a built-in 1215KB frame buffer, dynamic backlight control, and many other features.
Three power supply methods You can apply power to the board using the provided Mini-B USB cable, using its battery connector, or using its screw terminal connector. The USB connection can provide up to 500mA of current, which is more than enough for the operation of the microcontroller and all on-board modules. When using Li-Poly battery, an MCP73832 charging circuit permits the battery to be charged via USB or the screw terminals. An RGB LED indicates charging status. Power via the screw terminals should be between 5V and 12V DC. An LED will indicate the presence of power supply.
Programming with bootloader The microcontroller comes pre-programmed with a USB HID Bootloader, which can be used to upload new device firmware. To transfer a .hex file from a PC to the MCU, you can use the free mikroBootloader application. The board has a mini-USB connector and ships with a cable to connect to your PC.
Programming with external programmer/debugger In case you want to remove the USB bootloader, need to re-install it, or want to perform in-circuit debugging, the microcontroller can be programmed with an external in-circuit programmer/debugger (not included). The board has pads for installing programming headers compatible with the mikroProg for PIC.
Reset Button The board is equipped with a reset button on the LCD side so it can be available to the user if the mikromedia is placed in an enclosure or has a shield attached.
Crystal Oscillator and VREF The board is equipped with a 16 MHz crystal oscillator circuit that provides an external clock waveform to the microcontroller OSC1 and OSC2 pins. This base frequency is suitable for further clock multipliers and ideal for generation of a necessary USB clock, which ensures proper operation of the bootloader and your custom USB-based applications. The board also contains a 32.768 kHz crystal oscillator which provides an external clock for the internal RTCC module. A 2.048V external voltage reference is provided for the microcontroller's ADC.
Port Expander mikromedia+ for PIC32MX7 features an MCP23S17 16-bit I/O port expander module which communicates with the PIC32MX795F512L microcontroller via SPI. This module enables you to expand the number of microcontroller I/O pins with two 8-bit I/O ports (PORTA and PORTB). Each of them consists of registers for input, output and polarity selection. In addition, the MCP23S17 module contains interrupt and reset pins and has 25mA sink/source capability per I/O pin.
microSD Card Slot The board contains a microSD card slot for using microSD cards in your projects. It enables you to store large amounts of data externally, thus saving microcontroller memory. microSD cards use Serial Peripheral Interface (SPI) for communication with the microcontroller.
Touch Screen The development system features a 4.3" TFT 480×272 display covered with a resistive touch panel. It enables data to be entered and displayed at the same time. The TFT display is capable of showing data in 256K different colors. A stylus is sold separately; see the options below.
Audio Module mikromedia+ for PIC32MX7 features a VS1053 audio codec. This chip enables audio reproduction and recording by using a headphones/microphone set connected to the system via the quadrupole 3.5mm jack. All functions of this module are controlled by the microcontroller over Serial Peripheral Interface (SPI). In and Out channels are provided on side headers also.
USB Connection The PIC32MX795F512L has an integrated USB module which enables you to implement USB communication functionality to the mikromedia+ board. Connection to a target USB Host is achieved with a Mini-B USB connector. The same connector also can be used as a USB Host itself for connecting a USB Device such as a keyboard, mouse, etc. The board supplies power to the TPS2041B IC. Note: As the USB port is a Mini-B connector, you will need a Mini-B to Type-A adapter to use it as a USB Host.
Accelerometer The on-board ADXL345 accelerometer can be used to measure acceleration in three axes: x, y, and z. The accelerometer's function is defined by the program loaded into the microcontroller. Communication between the accelerometer and the microcontroller is performed via the I2C interface. You can set the accelerometer address to 0 or 1 by re-soldering the SMD jumper (zero-ohm resistor) to the appropriate position. This jumper is placed in address 1 position by default.
Flash Memory The M25P80 Flash memory module enables the microcontroller to use an additional 8Mbits of Flash memory. It is connected to the microcontroller via the Serial Peripheral Interface (SPI).
RF Transceiver mikromedia+ for PIC32MX7 features an nRF24L01+ RF transceiver chip and a 2.4GHz active chip antenna. It is suitable for wireless operation in the worldwide ISM frequency band at 2.400 to 2.4835 GHz with air data rate up to 2Mbps. The chip is connected to the microcontroller via SPI.
Ethernet Transceiver The LAN8720A chip provides the necessary physical layer for the 10/100Mbps Ethernet feature of the microcontroller. Note: The Ethernet communication lines are available through the side expansion headers; the mikromedia+ board itself does not have an RJ45 jack. The optional mikromedia+ Shield provides an RJ45 interface. You can order it using the option checkboxes below.
Piezo Buzzer The board is equipped with a piezo buzzer which can be used to create sound via PWM signal. Signal frequency determines the pitch of the sound, while the signal duty cycle can be used to increase or decrease the volume.
PIN Photodiode The PIN photodiode is capable of converting light into voltage with high sensitivity and response speed. It is connected to an analog pin of the microcontroller. You can use this to have the system automatically adjust the screen backlight based on the ambient light level, for example.
IR Receiver The IR receiver can be used for infra-red remote control of the board. The demodulated output signal from the IR module can be decoded by the microcontroller. Many existing data format standards are supported.
RGB LED A multicolor LED is provided for you to implement a light indicator into your design. Each of the Red/Green/Blue channels is driven by a separate transistor.
Analog Temperature Sensor The MCP9700A analog temperature sensor converts temperature to analog voltage. It is connected to an analog pin of the microcontroller. It can measure from -20°C to +70°C.
Software Examples The included DVD-ROM contains example software, both as ready-to-load compiled code and as source code written in mikroC, mikroBASIC and mikroPascal. Demo versions of those compilers and of Visual TFT are included too.
- mikromedia+ for PIC32MX7 Board with touchscreen LCD
- USB cable
- 2GB microSD card
- DVD-ROM with documentation and code examples
- Printed documentation
PIC32MX7 Multimedia Board Resources
Expansion Options The expansion pads on the sides of the board allow you to connect the mikromedia+ for PIC32MX7 Shield which adds an RJ45 Ethernet port, CAN screw terminals, a USB-UART interface, and sockets for connecting four mikroBUS modules. More than 60 mikroBUS modules are available; see the mikroBUS category.
Optional Recommended Products for this Item