ATSAMA5D27-WLSOM1-EK1 ATSAMA5D27-WLSOM1-EK1 User's Guide Scope This user's guide provides detailed information on the overall design of the ATSAMA5D27-WLSOM1-EK1 and describes how to use the kit. The kit is the evaluation platform for the SAMA5D27 System-In-Package (SiP) and SAMA5D27 Wireless System-On- Module (WLSOM1), and comprises: •...
Baseboard Components Baseboard Components This section covers the specifications of the ATSAMA5D27-WLSOM1-EK1 and provides a high-level description of the baseboard'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 baseboard. It is expected that the user will refer to the appropriate documents of these devices to access detailed information.
Disable QSPI Boot Memory Closed VDD_MAIN WLSOM1 Current Measurement Closed VDDBU WLSOM1 Current Measurement Baseboard Connectors The following table describes the interface connectors on the ATSAMA5D27-WLSOM1-EK1. Table 3-2. Baseboard Interface Connectors Connector Interfaces to SHDN Signal Supervising (Not populated) VDD_3V3 WLSOM1 Current Measurement...
Page 10
3.4.2.1 Input Power The ATSAMA5D27-WLSOM1-EK1 power source can come through a USB connector (J10) connected to a PC. This USB power source is sufficient to supply the board in most applications. Important: In case of an external device connected through the USB-B port, it is recommended to use the 5V power supply input with an AC/DC wall adapter for the entire system rather than a PC or a USB hub, which are limited to 500 mA typical.
Page 11
3.4.2.4 Backup Power Supply The ATSAMA5D27-WLSOM1-EK1 features a power source in order to permanently power the backup area of the SAMA5D2 device (refer to the SAMA5D2 Series datasheet). A super capacitor (C13) sustains such permanent power to VDDBU when all system power sources are off.
Page 12
3.4.5.1 Secure Digital Multimedia Card (SDMMC) Controller The ATSAMA5D27-WLSOM1-EK1 features 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.
Page 17
– Offers a VBUS detection function through the R81-R83 resistor ladder – Used as a secondary power source and as a communication link for the ATSAMA5D27-WLSOM1-EK1, and derives power from the PC over the USB cable. In most cases, this port is limited to 500 mA.
External Interfaces 3.5.1 LCD TFT Interface The ATSAMA5D27-WLSOM1-EK1 provides an FPC connector with 18 bits of data and control signals to the LCD interface. This connector is used to connect to an LCD display type AC320005-5. A 50-pin FPC (J21) header is provided on the baseboard to interface the LCD module with the 18-bit parallel RGB mode and is used to connect to an LCD display type AC320005-5.
Page 27
– GROUND 3.5.3 RGB LED The ATSAMA5D27-WLSOM1-EK1 features one RGB LED which can be controlled by the user. The three LED cathodes are controlled via GPIOs or Timer/Counter pins (only for red and green LEDs). Figure 3-24. RGB LED Schematic VDD_3V3 2.2k...
GREEN_LED GPIO/TIOB5 BLUE_LED GPIO Debugging Capabilities The ATSAMA5D27-WLSOM1-EK1 includes two main debugging interfaces to provide debug-level access to the SAMA5D2: • One JTAG interface connected from the MPU using connector J25. • One UART interface connected from the MPU using connector J26.
Page 30
3.6.2 Debug UART The ATSAMA5D27-WLSOM1-EK1 board has a dedicated serial port for debugging, which is accessible through the 6-pin male header J26. Various interfaces can be used as a USB/Serial DBGU port bridge, such as FTDI TTL-232R USB to TTL serial cable or basic breakout board for the RS232/USB converter.
Page 31
R152 and R154 are optional (not implemented) resistors that can be used for power selection. Power can be delivered either by the ATSAMA5D27-WLSOM1-EK1 board or by the debug interface tool. To avoid malfunction between the debug interface (e.g., FTDI) and the on-board power system, ensure that the voltage level selected corresponds to the application requirements.
Page 35
Note that most pins are configured as GPIO inputs, with a 100 KOhm pull-up resistor, after reset. 3.7.1 Tamper Interface The ATSAMA5D27-WLSOM1-EK1 features seven tamper pins for static or dynamic intrusion detection and two analog pins for comparison. For a description of intrusion detection, refer to the SAMA5D2 data sheet, chapter “Security Module (SECUMOD)”.
Page 36
3.7.2 mikroBUS Interfaces The ATSAMA5D27-WLSOM1-EK1 hosts two pairs of 8-pin female headers acting as mikroBUS interfaces. The mikroBUS standard defines the main board sockets and add-on boards, or Click boards, used for interfacing microprocessors with integrated modules having proprietary pin configuration and silkscreen markings. The pinout consists of three groups of communication pins (SPI, UART and TWI), four additional pins (PWM, interrupt, analog input and reset) and two power groups (+3.3V and GND on the left, and 5V and GND on the right 1x8 header).
Page 39
GROUND 3.7.3 Expansion Header Interfaces The ATSAMA5D27-WLSOM1-EK1 can host two connectors to interface with standard Xplained Pro extensions and, in particular, with QT Xplained Pro Extension boards. The following QT Xplained Pro Extensions boards are compatible with the interfaces: •...
Page 42
VTH Threshold The ATSAMA5D27-WLSOM1 module mounted on the base board integrates a Voltage Supervisor MIC842. A resistor ladder is mounted on the ATSAMA5D27-WLSOM1-EK1 board and detects a voltage drop when reduced to 4.64V. It is possible to change this resistor ladder, values or reference if, for test purposes, another voltage reference is monitored (e.g.
ATSAMA5D27-WLSOM1-EK1 Installation and Operation Installation and Operation System and Configuration Requirements The ATSAMA5D27-WLSOM1-EK1 requires the following: • Personal Computer • USB cable (included in the kit box) • Wireless antenna (included in the kit box) How to Mount the Wireless Antenna on the Kit 4.2.1...
The Adaptec logo, Frequency on Demand, Silicon Storage Technology, and Symmcom are registered trademarks of Microchip Technology Inc. in other countries. GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries.
Need help?
Do you have a question about the ATSAMA5D27-WLSOM1-EK1 and is the answer not in the manual?
Questions and answers