This user's guide describes how to use the SAMA5D2 PTC Evaluation Kit (SAMA5D2-PTC-EK). The SAMA5D2-PTC-EK is used to evaluate the capabilities of the Peripheral Touch Controller (PTC) designed for the SAMA5D2 series of embedded MPUs. Refer to the Configuration Summary table in the SAMA5D2 Series Datasheet for the list of MPUs featuring PTC.
The document is organized as follows: • Chapter 1. "Introduction" • Chapter 2. "Product Overview" – Important information about the SAMA5D2-PTC-EK board • Chapter 3. "Board Components" – Specifications of the SAMA5D2-PTC-EK and high-level description of the major components and interfaces •...
Product Overview SAMA5D2-PTC-EK Features The SAMA5D2-PTC-EK follows the Microchip MPU strategy for low cost evaluation kits with maximum reuse capability, and is built on the SAMA5D2 Xplained Ultra (XULT) hardware and software ecosystem. This board is mainly dedicated to evaluating the Peripheral Touch Controller capabilities.
Compliant Board identification SAMA5D2 Peripheral Touch Controller Evaluation Kit Power Sources Several options are available to power up the SAMA5D2-PTC-EK board: • USB powering through the USB Micro-AB connector (J4 - default configuration) • Powering through the USB Micro-AB connector on the JLlink-OB Embedded Debugger interface (J9) Table 2-3. Electrical Characteristics...
Board Components Board Components This section covers the specifications of the SAMA5D2-PTC-EK and provides a high-level description of the board's major components and interfaces. This document is not intended to provide a detailed documentation about the processor or about any other component used on the board. It is expected that the user will refer to the appropriate documents of these devices to access detailed information.
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SAMA5D2-PTC-EK Board Components Figure 3-1. Default Jumper Settings The following table describes the functionality of the jumpers. Table 3-1. SAMA5D2-PTC-EK Jumper Settings Jumper Default Function Closed VDD_MAIN_5V current measurement Closed VDDOSC, VDDUTMII, VDDANA, VDDAUDIOPLL current measurement Closed VDDISC + VDDIOP0/1/2 current measurement...
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Enables 3.3V JLINK-OB, connected to shutdown circuitry Enables 3.3V JLINK-OB, always ON 3.1.2 Connectors on Board The following table describes the interface connectors on the SAMA5D2-PTC-EK. Table 3-2. SAMA5D2-PTC-EK Board Interface Connectors Connector Interfaces to PIOBU, tamper and analog comparator connector (not populated) JTAG, 10-pin IDC connector USB Host B.
3.2.2.1 Input Power Options Two options are available to power the SAMA5D2-PTC-EK board. The USB-powered operation is the default configuration and comes from the USB device ports (J4-J9) connected to a PC or a 5VDC supply. Such USB power source is sufficient to supply the board in most applications. It is important to note that when the USB-powered operation is used, the USB port down the way has a limited powering capability.
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Note: USB-powered operation eliminates additional wires and batteries. It is the preferred mode of operation for any project that requires only a 5V source at up to 500 mA. Jumper JP1 is used to perform MAIN_5V current measurements on the SAMA5D2-PTC-EK board. 3.2.2.2 Power Supply Requirements and Restrictions Detailed information on the device power supplies is provided in tables “SAMA5D2 Power Supplies”...
3.2.2.7 Backup Power Supply The SAMA5D2-PTC-EK board requires a power source in order to permanently power the backup part of the SAMA5D2 device (refer to SAMA5D2 Series datasheet). The super capacitor C17 sustains such permanent power to VDDBU when all system power sources are off.
The embedded microcontroller generates its necessary clocks based on two crystal oscillators: one slow clock (SLCK) oscillator running at 32.768 KHz and one main clock oscillator running at 24 MHz. The SAMA5D2-PTC-EK board includes four clock sources: • The two clocks mentioned above are alternatives for the SAMA5D2 processor (24 MHz, 32.768 kHz) •...
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The SAMA5D2 features a DDR/SDR memory interface and an External Bus Interface (EBI) to enable interfacing to a wide range of external memories and to almost any kind of parallel peripheral. This section describes the memory devices mounted on the SAMA5D2-PTC-EK board: •...
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GND_POWER 3.2.7.4 NAND FLASH The SAMA5D2-PTC-EK has native support for NAND Flash memory through its NAND Flash Controller. The board implements one MT29F4G08ABA 4Gb x 16 NAND Flash connected to chip select three (NCS3) of the microcontroller. Caution: The NAND Flash interface is shared with the SDMMC1 and QSPI interfaces.
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3.2.8.4 Serial EEPROM with Unique MAC Address The SAMA5D2-PTC-EK board embeds one Microchip 24AA02E48 I²C serial EEPROM connected on the TWI1 interface. The TWI interface is I C-compatible and similarly uses only two lines, namely serial data (SDA) and serial clock (SCL).
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3.2.9.1 Secure Digital Multimedia Card (SDMMC) Controller The SAMA5D2-PTC-EK board has two Secure Digital Multimedia Card (SDMMC) interfaces that support the MultiMedia Card (e.MMC) Specification V4.41, the SD Memory Card Specification V3.0, and the SDIO V3.0 specification. It is compliant with the SD Host Controller Standard V3.0 Specification.
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This section describes the signals and connectors related to the ETH and USB communication interfaces. 3.2.10.1 Ethernet 10/100 (GMAC) Port The SAMA5D2-PTC-EK board features a Micrel PHY device (KSZ8081) operating at 10/100 Mb/s. The board supports RMII interface modes. The Ethernet interface consists of two pairs of low-voltage differential pair signals designated from GRX±...
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480 Mbps (also known as High Speed USB). A USB host bus connector uses 4 pins: a power supply pin (5V), a differential pair (D+ and D- pins) and a ground pin. The SAMA5D2-PTC-EK board features three USB communication ports named USB-A to USB-C: •...
3.3.1.1 LCD Interface The SAMA5D2-PTC-EK board provides a connector with 18 bits of data and control signals to the LCD interface. Other signals are used to control the LCD and are available on connector J16: TWI, SPI, two GPIOs for interrupt, 1-wire and power supply lines.
Main_5V/3V3 3.3V or 5V supply (0R) 3.3.2 RGB LED The SAMA5D2-PTC-EK board features one RGB LED which can be controlled by the user. The three LED cathodes are controlled via GPIO PWM or timer/counter pins. Figure 3-36. RGB LED Indicators BSS138...
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This section describes the signals and connectors related to the JTAG interface. A 10-pin JTAG header is provided on the SAMA5D2-PTC-EK board to facilitate software development and debugging using various JTAG emulators. The interface signals have a voltage level of 3.3V.
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3.4.2 Embedded Debugger (JLINK-OB) Interface The SAMA5D2-PTC-EK includes a built-in SEGGER J-Link-On-Board device. The functionality is implemented with an ATSAM3U4C microcontroller in an LFBGA100 package. The ATSAM3U4C provides the functions of JTAG and a bridge USB/Serial debug port (CDC). One two-colored LED (D6) mounted near the SAM3 chip (U20) shows the status of the J-Link-On-Board device.
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3.5.3 XPRO Interface The SAMA5D2-PTC-EK board hosts two connectors to interface XPRO QT boards. The QTouch Xplained Pro are extension boards that enable evaluation of Self-capacitance and Mutual capacitance modes using the Peripheral Touch Controller (PTC). The boards show how easy it is to design a capacitive touch board solution using the PTC without the need for any external components.
Personal Computer • USB cable Board Setup Follow these steps before using the SAMA5D2-PTC-EK: Unpack the board, taking care to avoid electrostatic discharge. Check the default jumper settings. Connect the USB Micro-AB cable to connector J9. Connect the other end of the cable to a free port of your PC.
SAMA5D2-PTC-EK Appendix A. Schematics and Layouts Appendix A. Schematics and Layouts This appendix contains the following schematics and layouts for the SAMA5D2-PTC-EK board: • Title and Revision History • Block Diagram • Power Domains • MPU Power • DDR2-SDRAM •...
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