Secure 3 Click Board™

Product Code: MIKROE-2761

The Secure 3 Click Board™ carries the ATSHA204A, a cryptographic coprocessor with secure hardware-based key storage from Microchip. The click is designed to run on either 3.3V or 5V power supply. The Secure 3 Click Board™ communicates with the target microcontroller over an I2C interface. It is ideal to use for: Secure download and boot - authentication and protect code in-transit Ecosystem control - ensure only OEM/licensed nodes and accessories work Anti-cloning - prevent building with identical BOM or stolen code Message security - authentication, message integrity, and confidentiality of network nodes (IoT) NOTE: The Secure 3 Click Board™ comes with stacking headers which allow you to combine it with other clicks more easily by using just one mikroBUS™ socket. ATSHA204A Features The ATSHA204A is a member of the Microchip CryptoAuthentication™ family of high-security hardware authentication devices, which uses Secure Hash Algorithm (SHA-256) with 256-bit key length, message authentication code (MAC) and hash-based message authentication code (HMAC) options.

It has a flexible command set that allows use in many applications. The ATSHA204A device includes an Electrically Erasable Programmable Read-Only Memory (EEPROM) array that can be used for key storage, miscellaneous read/write data, read-only, secret data, consumption logging, and security configuration. Access to the various sections of memory can be restricted in a variety of ways, and the configuration can then be locked to prevent changes. SPECIFICATIONS Type Encryption Applications The Secure 3 Click Board™ can be used for the storage of certificates, miscellaneous read/write, read-only or secret data, consumption logging, and security configurations On-board modules ATSHA204A - a cryptographic coprocessor with secure hardware-based key storage Key Features Superior SHA-256 hash algorithm with 256-bit key length, message authentication code (MAC) and hash-based message authentication code (HMAC) options, storage for up to sixteen keys Interface I2C Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V PINOUT DIAGRAM This table shows how the pinout of the Secure 3 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 NC NC 2 RST INT 15 NC NC 3 CS TX 14 NC NC 4 SCK RX 13 NC NC 5 MISO SCL 12 SCL I2C clock NC 6 MOSI SDA 11 SDA I2C data Power supply +3.3V 7 3.3V 5V 10 +5V Power supply Ground GND 8 GND GND 9 GND Ground JUMPERS AND SETTINGS Designator Name Default Position Default Option Description JP1 VIO SEL. Left 3V3 Power Supply Voltage Selection 3V3/5V, left position 3V3, right position 5V