MRAM 3 Click Board™

Product Code: MIKROE-5191

How Does The MRAM 3 Click Board™ Work? The MRAM 3 Click Board™ is based on the AS3001204, a 1Mb MRAM memory with an SPI interface and Write Protection feature from Avalanche Technology. The AS3001204 is organized as 128K words of 8 bits each and benefits from 1.000.000 years of data retention combining their unprecedented data storage with excellent energy efficiency. It is highly reliable, lasting 1014 full-memory read/write/erase cycles, which makes this Click board™ suitable for high-reliability applications as a non-volatile storage media or temporary RAM expansion for storing data in any embedded application. The AS3001204 is an accurate random-access memory allowing both reads and writes to occur randomly in memory. It offers low latency, low power, and scalable non-volatile memory technology. The MRAM technology is analog to Flash technology with SRAM compatible read/write timings (Persistent SRAM, P-SRAM), where data is always non-volatile. The MRAM 3 Click Board™ communicates with MCU using the SPI serial interface that supports the Dual/Quad SPI and the two most common modes, SPI Mode 0 and 3, with a maximum SPI frequency of 108MHz.

Alongside an SPI-compatible bus interface, the AS3001204 also features an eXecute-In-Place (XIP) functionality which allows completing a series of reading and writing instructions without having to individually load the read or write command for each instruction and hardware/software-based data protection mechanisms. Hardware Write Protection function, labelled as WP routed to the PWM pin of the mikroBUS™ socket, allows the user to freeze the entire memory area, thus protecting it from Write instructions. The other pin, the IO3 pin routed to the RST pin of the mikroBUS™ socket, represents the bidirectional I/O that transfers data into and out of the device in Dual and Quad SPI modes. The MRAM 3 Click Board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development. SPECIFICATIONS Type MRAM Applications Can be used for applications that need data storage and retrieval without incurring significant latency penalties On-board modules AS3001204 - 1Mb MRAM memory from Avalanche Technology Key Features Virtually unlimited endurance and data, hardware/software-based data protection mechanisms, low power consumption, SPI/QSPI interface, and more Interface QSPI, SPI Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V PINOUT DIAGRAM This table shows how the pinout of the MRAM 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 WP Write Protect / QSPI IO2 QSPI IO3 IO3 2 RST INT 15 NC SPI Chip Select CS 3 CS RX 14 NC SPI Clock SCK 4 SCK TX 13 NC SPI Data OUT / QSPI IO1 SDO 5 MISO SCL 12 NC SPI Data IN / QSPI IO0 SDI 6 MOSI SDA 11 NC Power Supply 3.3V 7 3.3V 5V 10 NC Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator MRAM 3 CLICK ELECTRICAL SPECIFICATIONS Description Min Typ Max Unit Supply Voltage - 3.3 - V Memory Size - -