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RAK5814 WisBlock Crypto Module Datasheet

Overview​

Figure 5250: RAK5814 WisBlock Crypto Module

Description​

RAK5814 is a secure element cryptography chip based on Microchip ATECC608A. It was designed to provide hardware-based key storage as well as encryption/decryption to various electronic products and devices. It is very low power and interfaced via I2C.

Features​

  • Module Specifications

    • Protected storage for up to 16 Keys, Certificates, or Data
    • Hardware support for Asymmetric Sign, Verify, and Key Agreement
    • Hardware support for Symmetric Algorithms
    • 3.3 V Power Supply
    • I2C Interface (Max Speed: 100 kHz)
    • Sleep Current less than 150 nA

  • Module Size

    • 10 x 10 mm

Specifications​

Mounting​

Mounting to WisBlock Base​

The RAK5814 crypto module can be mounted to the sensor slots A, B, C, and D of the WisBlock Base Board. Figure 2 shows the mounting mechanism of the RAK5814 on a WisBlock base board module, such as the RAK5005-O.

Figure 5251: RAK5814 WisBlock Crypto Module Mounting

Hardware​

The hardware specification is categorized into five (5) parts. It shows the chipset of the module and discusses the pinouts and their corresponding functions and diagrams. It also covers the electrical and mechanical parameters that include the tabular data of the functionalities and standard values of the RAK5814 WisBlock Crypto Module.

Chipset​

VendorPart Number
MicrochipATECC608A

Pin Definition​

The RAK5814 WisBlock crypto module comprises a standard WisSensor connector. The WisSensor connector allows the RAK5814 module to be mounted to a WisBlock base board, such as RAK5005-O. The pin order of the connector and the pinout definition is shown in Figure 3.

Figure 5252: RAK5814 WisBlock Crypto Module Pinout

Electrical Characteristics​

This table shows the RAK5814 module electrical characteristics.

SymbolDescriptionMin.Nom.Max.Unit
VDDPower Supply Voltage-3.3-V
IsleepSleep Current--150nA
IccActive Power Supply Current2-14mA
FreqI2C Speed--100kHz

Mechanical Characteristic​

Board Dimensions​

Figure 4 shows the dimensions and the mechanical drawing of the RAK5814 module.

Figure 5253: RAK5814 WisBlock Crypto Module Mechanical Drawing
WisConnector PCB Layout​
Figure 5254: WisConnector PCB footprint and recommendations

Schematic Diagram​

Figure 6 shows the RAK5814 crypto module schematic. U1 (SOIC-8) and U2 (DFN8-2x3 mm) is reserved for different footprint crypto chip.

Figure 5255: RAK5814 WisBlock Crypto Module Schematic