MR2A16A FEATURES 256K x 16 MRAM Memory Fast 35 ns Read/Write cycle SRAM compatible timing, uses existing SRAM control- lers without redesign Unlimited Read & Write endurance Data non-volatile for >20 years at temperature One memory replaces Flash, SRAM, EEPROM and BBSRAM in a system for simpler, more efficient design 44-pin TSOP2 Replaces battery-backed SRAM solutions with MRAM to improve reliability 3.3 volt power supply Automatic data protection on power loss Commercial, Industrial, Extended temperatures AEC-Q100 Grade 1 option 48-ball BGA All products meet MSL-3 moisture sensitivity level RoHS-compliant SRAM TSOP2 and BGA Packages RoHS INTRODUCTION The MR2A16A is a 4,194,304-bit magnetoresistive random access memory (MRAM) device orga- nized as 262,144 words of 16 bits. The MR2A16A offers SRAM compatible 35 ns read/write timing with unlimited endurance. Data is always non-volatile for greater than 20 years. Data is automati- cally protected on power loss by low-voltage inhibit circuitry to prevent writes with voltage out of specification. The MR2A16A is the ideal memory solution for applications that must permanently store and re- trieve critical data and programs quickly. The M2A16A is available in a small footprint 48-pin ball grid array (BGA) package and a 44-pin thin small outline package (TSOP Type 2). These packages are compatible with similar low-power SRAM products and other nonvolatile RAM products. The MR2A16A provides highly reliable data storage over a wide range of temperatures. The prod- uct is offered with Commercial (0 to +70 C), Industrial (-40 to +85 C), Extended (-40 to +105 C), and AEC-Q100 Grade 1 (-40 to +125 C) operating temperature range options. Copyright Everspin Technologies 2018 1 MR2A16A Rev. 11.3 3/2018MR2A16A TABLE OF CONTENTS FEATURES .............................................................................................................................................1 INTRODUCTION ...................................................................................................................................1 BLOCK DIAGRAM AND PIN ASSIGNMENTS .......................................................................................4 Figure 1 Block Diagram ........................................................................................................................................... 4 Table 1 Pin Functions ............................................................................................................................................... 4 Figure 2 Pin Diagrams for Available Packages (Top View) .......................................................................... 5 Table 2 Operating Modes ....................................................................................................................................... 5 ABSOLUTE MAXIMUM RATINGS .........................................................................................................6 Table 3 Absolute Maximum Ratings ................................................................................................................... 6 OPERATING CONDITIONS ...................................................................................................................7 Power Up and Power Down Sequencing .......................................................................................8 Figure 3 Power Up and Power Down Diagram ............................................................................................... 8 DC CHARACTERISTICS .........................................................................................................................9 Table 4 DC Characteristics ...................................................................................................................................... 9 Table 5 Power Supply Characteristics ................................................................................................................ 9 TIMING SPECIFICATIONS ................................................................................................................. 10 Table 6 Capacitance ...............................................................................................................................................10 Table 7 AC Measurement Conditions ..............................................................................................................10 Figure 4 Output Load Test Low and High .......................................................................................................10 Figure 5 Output Load Test All Others ...............................................................................................................10 Read Mode .................................................................................................................................... 11 Table 8 Read Cycle Timing ...................................................................................................................................11 Figure 6 Read Cycle 1 .............................................................................................................................................11 Figure 7 Read Cycle 2 .............................................................................................................................................11 Write Mode .................................................................................................................................... 12 Table 9 Write Cycle Timing 1 (W Controlled) .................................................................................................12 Copyright Everspin Technologies 2018 2 MR2A16A Rev. 11.3 3/2018