Mikroe Mikromedia 4 User manual

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mikromedia 4 for PIC CAPACITIVE FPI U S E R M A N U A L
USER MANUAL
for PIC CAPACITIVE FPI

Thank you for choosing MIKROE!
We present you the ultimate multimedia solution for embedded development.
Elegant on the surface, yet extremely powerful on the inside, we have designed it to inspire outstanding achievements.
And now, it’s all yours.
Enjoy premium.
Time-saving embedded tools

Introduction 5
1.Key microcontroller features 6
1.1 MCU programming/debugging 8
1.2 MCU reset 8
2. Power supply unit 10
2.1 Detailed description 11
2.2 Voltage reference 11
2.3 PSU connectors 12
2.4 Power redundancy & UPS 15
2.5 Powering up the board 15
3. Capacitive display 16
4. Data storage 19
4.1 microSD card slot 19
4.2 External flash storage 19
5. Connectivity 20
5.1 RF 20
5.2 USB 21
5.3 mikroBUS™ shuttle connectors 22
6. Sound-related peripherals 24
6.1 Piezo buzzer 24
6.2 Audio CODEC 25
7. Sensors and other peripherals 26
7.1 Digital motion sensor 26
7.2 Real-time clock (RTC) 27
What’s next 30
Table of contents

Pick your own look
Identical in the back, choices up front.
mikromedia 4 for PIC Capacitive FPI with bezel
mikromedia 4 for PIC Capacitive FPI with frame
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mikromedia 4 for PIC CAPACITIVE FPI is a compact development
board designed as a complete solution for the rapid development
of multimedia and GUI-centric applications. By featuring a 4.3”
capacitive touch screen driven by the powerful graphics controller
that can display the 24-bit color palette (16.7 million colors), along
with a DSP-powered embedded sound CODEC IC, represents a
perfect solution for any type of multimedia application.
At its core, there is a powerful 8-bit PIC18F97J94 microcontroller
(referred to as “host MCU” in the following text), produced by
Microchip, which provides sufficient processing power for the most
demanding tasks, ensuring fluid graphical performance and glitch-
free audio reproduction.
However, this development board is not limited to multimedia-based
applications only: mikromedia 4 for PIC CAPACITIVE FPI (“mikromedia
4 FPI” in the following text) features USB, RF connectivity options,
digital motion sensor, piezo-buzzer, battery charging functionality,
SD-Card reader, RTC, and much more, expanding its use beyond
the multimedia. Two compact-sized mikroBUS Shuttle connectors
represent the most distinctive connectivity feature, allowing access
to a huge base of Click boards™, growing on a daily basis.
The usability of mikromedia 4 FPI does not end with its ability to
accelerate the prototyping and application development stages: it
is designed as the complete solution which can be implemented
directly into any project, with no additional hardware modifications
required. We offer two types of mikromedia 4 for PIC CAPACITIVE
FPI boards. The first one has a TFT display with a bezel around it
and is ideal for handheld devices. The other mikromedia 4 for PIC
CAPACITIVE FPI board has a TFT display with a metal frame, and four
corner mounting holes that enable simple installation in various kinds
of industrial appliances. Each option can be used in smart home
solutions, as well as wall panel, security and automotive systems,
factory automation, process control, measurement, diagnostics and
many more. With both types, a nice casing is all that you need to turn
the mikromedia 4 for PIC CAPACITIVE FPI board into a fully functional
design.
Pick your own look
Identical in the back, choices up front.
mikromedia 4 for PIC Capacitive FPI with bezel
mikromedia 4 for PIC Capacitive FPI with frame
N O T EThis manual, in its entirety, showcases just one option of mikromedia
4 for PIC CAPACITIVE FPI for illustration purposes. The manual applies
to both options.

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mikromedia 4 for PIC CAPACITIVE FPI U S E R M A N U A L
PIC18F97J94
1. Key microcontroller features
PIC18F97J94 is the high-performace 8-bit MCU, produced
by Microchip. It features a rich peripheral set, like CTMU,
hardware RTC, 12 bit A/D, along with the standard ones. Key
features include:
∫128 MB of Flash memory
∫4 KB of RAM memory
∫nanoWatt XLP technology
∫Operating frequency up to 64 MHz
∫High-Precision PLL for USB
For the complete list of MCU features, please refer to the
PIC18F97J94 datasheet.
At its core, mikromedia 4 for PIC CAPACITIVE FPI uses the PIC18F97J94 MCU.
PIC18F97J94
Figure 1: PIC18F97J94 MCU block schematic

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mikromedia 4 for PIC CAPACITIVE FPI U S E R M A N U A L
MCUs FEATURES

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mikromedia 4 for PIC CAPACITIVE FPI U S E R M A N U A L
MCUs FEATURES
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Figure 3: Front and back partial view
The host MCU (1) can be programmed and debugged over the Microchip
ICSP compatible 2x5 pin header (2), labeled as PROG/DEBUG. This header
allows an external programmer (e.g. CODEGRIP or mikroProg) to be used.
Programming the microcontroller can also be done by using the bootloader
which is preprogrammed into the device by default. All the informations
about the bootloader software can be found on the following page:
www.mikroe.com/mikrobootloader
The board is equipped with the Reset button (3), which is located on the
back side of the board. It is used to generate a LOW logic level on the
microcontroller reset pin.
1.1 Microcontroller programming/debugging
1.2 MCU reset

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mikromedia 4 for PIC CAPACITIVE FPI U S E R M A N U A L

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mikromedia 4 for PIC CAPACITIVE FPI U S E R M A N U A L
The power supply unit (PSU) provides clean and regulated
power, necessary for proper operation of the mikromedia 4 FPI
development board. The host MCU, along with the rest of the
peripherals, demands regulated and noise-free power supply.
Therefore, the PSU is carefully designed to regulate, filter,
and distribute the power to all parts of mikromedia 4 FPI. It
is equipped with three different power supply inputs, offering
all the flexibility that mikromedia 4 FPI needs, especially
when used on the field or as an integrated element of a larger
system. In the case when multiple power sources are used, an
automatic power switching circuit with predefined priorities
ensures that the most appropriate will be used.
The PSU also contains a reliable and safe battery charging
circuit, which allows a single-cell Li-Po/Li-Ion battery to be
charged. Power OR-ing option is also supported, providing
an uninterrupted power supply (UPS) functionality when an
external or USB power source is used in combination with the
battery.
2. Power supply unit
Figure 4: Power supply unit view
mikromedia 4 for PIC CAPACITIVE FPI U S E R M A N U A L