MRAM 메모리 모듈 -EM064LX
(MRAM 4 CLICK)
개요
- 본 제품은 MRAM 메모리 모듈 -EM064LX입니다.
- STT-MRAM 메모리 EM064LX을 탑재하고 있는 제품입니다.
- SPI 인터페이스를 가지고 있습니다.
특징
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HOW DOES IT WORK?
MRAM 4 Click is based on the EM064LX, an industrial STT-MRAM persistent memory from Everspin Technologies. It can deliver up to 400Mbps reads and writes via eight I/O signals with a clock frequency 200MHz. As this is a persistent memory, byte-level writes and reads do not require erasing. Nonvolatile settings are not reflow protected, which you have to keep in mind. A dedicated 256-byte OTP area outside the main memory is readable and user-lockable, with a permanent lock WRITE OTP command. The EM064LX is capable of chip/bulk and sector erase. Subsector erase is possible in 4KB, 32KB granularity. In addition, the MRAM memory features 16 configurable hardware write-protected regions plus top/bottom select, program/erase protection during power-up, and CRC command to detect accidental changes to user data.
As the EM064LX works at the recommended 1.8V voltage, the MRAM 4 Click is equipped with a BH18PB1WHFV, a CMOS LDO regulator from Rohm Semiconductor. To work with different logic level voltage, this Click board™ comes with a TXB0106, a 6-bit bidirectional level-shifting and voltage translator from Texas Instruments. On board, there are two unpopulated jumpers labeled R5 and R6. The chip select and write protection can be pulled up for further hardware development.
MRAM 4 Click uses a standard 4-Wire SPI serial interface to communicate with the host MCU. You can use write protection functionality over the WP pin. The hardware reset is available over the HLD pin, whereas in the low logic state, the memory will self-initialize and return the device to the ready state. There is an unpopulated R6 resistor for an external pull-up, as this pin shouldn't be allowed to float.
This 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. Also, it 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 the development of applications that need data storage and retrieval without incurring significant latency penalties On-board modules EM064LX - industrial STT-MRAM persistent memory from Everspin Technologies Key Features Security and write protections, erase capability as bulk and subsector, dedicated OTP area outside main memory, wide range SPI compatibility, low power modes, data integrity, 10 years of data retention, data endurance with unlimited read, write, and erase operations, and more Interface SPI ClickID Yes Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V