LinkIt 2523 HDK v11 User's Guide
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3.
Hardware Description
LinkIt 2523 HDK provides connections between the system on chip (SOC) and the peripherals, such as micro SD
card, eMMC, MIPI LCM, serial LCM, touch panel, serial camera, sensor daughterboard, GNSS, Bluetooth, audio
speech and high speed USB 2.0.
The top and bottom layout views (Figure 8 and Figure 9, respectively) show the positions of the peripherals on the
development board. Some of the peripheral interfaces are mutually exclusive. The eMMC and the micro SD, for
example, cannot be used at the same time, as the corresponding pins can only be assigned to one function at a
time.
The LinkIt 2523 HDK provides the following features for application development.
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ARM Cortex-M4 core-based MT2523G microcontroller.
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Internal 160kB SRAM and 4MB PSRAM.
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Internal 4MB serial flash.
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Rich interfaces.
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Three I2Cs.
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Four master SPIs and a slave SPI.
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One master I2S and one slave I2S.
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One PCM interface that supports master.
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Four sets of UARTs. The first set of UART is directly configured through pin headers, the other three sets
are software configurable.
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Five 12-bit ADCs.
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Six PWMs by alternative voltage level.
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Two SDMMCs.
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JTAG debugging support.
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Five sets of clock outputs.
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Peripherals.
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One serial camera interface supporting up to 3-bit mode image capture.
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Two display modes supporting serial interface and MIPI with the resolution of up to 320*320 pixels.
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Keypad supported to simulate buttons, such as volume up or down, backward and enter.
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Onboard speaker, onboard analog microphone and audio jack appliance.
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User-friendly customization.
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Supports Bluetooth (2.4GHz) and GNSS onboard antenna connectivity and an SMA connector for
dedicated antenna connectivity.
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Supports 2-wire SWD interface for debugging purposes.
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Headers for convenient and accurate current measurement.
