存储器的类型将决定整个嵌入式系统的操作和性能,因此存储器的选择是一个非常重要的决策。无论系统是采用电池供电还是由市电供电,应用需求将决定存储器的类型(易失性或非易失性)以及使用目的(存储代码、数据或者两者兼有)。另外,在选择过程中,存储器的尺寸和成本也是需要考虑的重要因素。 Density Org. Part Number Pkg. Voltage Temp 4Mb 256Kx16 MR2A16AVMA35R 48-BGA 3.3v Extended FEATURES · 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 · 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 · All products meet MSL-3 moisture sensitivity level · RoHS-compliant SRAM TSOP2 and BGA Packages