MR25H256 semiconductor 系列
Everspin Technologies, Inc.256Kb非易失性MRAM存储芯片，具有SPI接口
Everspin Technologies的MR25H256系列是一款采用SPI接口的256Kb非易失性磁随机存取存储器（MRAM）芯片，适用于低功耗和高可靠性的嵌入式系统。如果您的应用需要快速写入时间和长期数据保留的非易失性存储，这些MRAM芯片非常适合。
值得注意的是它们的耐久性。MRAM通常提供数百万次写入周期，使其成为频繁写入数据但可靠性至关重要的场景的理想选择。工程师在寻找不会随着时间退化的问题解决方案时往往会选用这种芯片，而不会像闪存那样退化。此外，SPI接口简化了其与现有设计的集成，使得替换较慢或更易挥发的内存类型变得更加容易。
另一个实际应用场景是在汽车系统中，其中数据完整性和耐用性至关重要。MR25H256可以存储关键的系统配置数据或传感器信息，即使在电源循环和极端环境条件下也能保持持久性。非易失性特性确保即使系统断电，数据也能在下一次电源循环之前保持完好。这对于安全性要求高的系统尤其有用，在这些系统中数据丢失可能会产生严重后果。
系列图片（5 张）
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MR25H256 semiconductor - 型号列表
共 11 个型号| 制造商零件编号 | 库存 | 价格 | 产品类别 | RoHS | 接口 | 存储器容量 | 供电电压 | 包装方式 | 封装形式 | 系列 | 制造商全称 | 工作温度 | 标准包装数量 | 转速 | 存储器类型 | 供应商器件封装 | 核心数/总线宽度 | 存储器格式 | 供电电流 | 平均正向功率 | 安装样式 | 最小供电电压 | 其他名称 | 最大功耗 | 平均整流电流 Io | 标准封装名称 | 欧盟RoHS | 频率 | 额定电压 | 最大额定电流 | 共模瞬态抗扰度（最小） | 宽度 | 引脚样式 | 安装类型 | 连接器用途 | 总长度 | 包装数量 | 位数 | 外壳尺寸-插件 | 类型 | 密度 | 印刷电路板数量 | 机械寿命 | 抗辐射加固 | 存取时间 | 输出电流 | 冷却的封装 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 NVRAM 256Kb 3.3V 32Kx8 SPI Pre-Qual Sample MRAM IC MRAM 256KBIT 40MHZ 8DFN NVRAM 256Kb 3.3V 32Kx8 SPI Everspin Technologies | 1133 | 1: ¥44.88 | - | RoHS Compliant | SPI | 256 KB | 3.6 V | Tray | DFN-8 | MR25H256 | 32 K x 8 | + 125 C | 570 | 40MHz | MRAM (Magnetoresistive RAM) | 8-DFN-EP, Small Flag (5x6) | 8 bit | RAM | 20 mA | 0.6 W | - | 2.7 V to 3.6 V | 819-1041 | 0.6 W | 20 mA | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | New Product: New from this manufacturer. | - | - | - | - |
| 10 | 4000: ¥70.4344 | - | RoHS Compliant | SPI | 256 Kbit | 3.6 V | Reel | DFN-8 | MR25H256 | 32 K x 8 | + 85 C | 4,000 | 40MHz | MRAM (Magnetoresistive RAM) | 8-DFN-EP, Large Flag (5x6) | - | RAM | - | - | SMD/SMT | - | MR25H256CDCR-ND | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
 | 10 | 4000: ¥23.7796 | - | RoHS Compliant | SPI Serial | 256K (32K x 8) | 2.7 V ~ 3.6 V | Tape & Reel (TR) | 8-TDFN Exposed Pad | MR25H256 | 32 K x 8 | -40°C ~ 125°C | 4,000 | 40MHz | MRAM (Magnetoresistive RAM) | 8-DFN-EP, Large Flag (5x6) | - | RAM | - | - | SMD/SMT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 10 | 2870: ¥19.652 | - | RoHS Compliant | SPI Serial | 256K (32K x 8) | 2.7 V ~ 3.6 V | Tape & Reel (TR) | 8-VDFN Exposed Pad | MR25H256 | 32 K x 8 | -40°C ~ 85°C | 4,000 | 40MHz | MRAM (Magnetoresistive RAM) | 8-DFN-EP, Small Flag (5x6) | 8 bit | RAM | 20 mA | 0.6 W | - | 2.7 V to 3.6 V | - | 0.6 W | 20 mA | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
NVRAM 256Kb 3V 32Kx8 Serial MRAM NVRAM MRAM Serial-SPI 256K-Bit 3.3V 8-Pin DFN EP Tray IC MRAM 256KBIT 40MHZ 8DFN Everspin Technologies | 63 | 1: ¥74.5362 | - | Lead free / RoHS Compliant | Serial-SPI | 256K (32K x 8) | 2.7 V ~ 3.6 V | Tray | 8-TDFN Exposed Pad | MR25H256 | 32Kx8 | -40°C ~ 85°C | 570 | 40MHz | MRAM (Magnetoresistive RAM) | 8-DFN-EP, Large Flag (5x6) | 8 | RAM | - | - | SMD/SMT | 2.7 V | 819-1015 | - | - | DFN | Compliant | 40MHz | 2.7 | 27 | Industrial | 6 | No Lead | Surface Mount | SPI Serial | 5 | DFN EP | 8 | 0.95 | MRAM | 262144 Bit | 8 | - | No | 10 ns | 27 mA | DFN EP |
| 1729 | 1: ¥45.356 | - | RoHS Compliant | SPI Serial | 256K (32K x 8) | 2.7 V ~ 3.6 V | Tray | 8-TDFN Exposed Pad | MR25H256 | 32 K x 8 | -40°C ~ 125°C | 570 | 40MHz | MRAM (Magnetoresistive RAM) | 8-DFN-EP, Large Flag (5x6) | - | RAM | - | - | SMD/SMT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
NVRAM 256Kb 3.3V 32Kx8 Serial MRAM NVRAM MRAM Serial-SPI 256K-Bit 3.3V 8-Pin DFN EP Tray IC MRAM 256KBIT 40MHZ 8DFN Everspin Technologies | 1094 | 1: ¥38.42 | - | Lead free / RoHS Compliant | Serial-SPI | 256K (32K x 8) | 2.7 V ~ 3.6 V | Tray | 8-VDFN Exposed Pad | MR25H256 | 32Kx8 | -40°C ~ 85°C | 570 | 40MHz | MRAM (Magnetoresistive RAM) | 8-DFN-EP, Small Flag (5x6) | 8 bit | RAM | 20 mA | 0.6 W | - | 2.7 V to 3.6 V | 819-1038 | 0.6 W | 20 mA | DFN | Compliant | 40MHz | 2.7 | 27 | Industrial | 6.1(Max) | No Lead | Surface Mount | SPI Serial | 5.1(Max) | DFN EP | 8 | 0.85(Max) | MRAM | 256K | 8 | - | - | - | - | - |
| 10 | 2965: ¥24.684 | - | RoHS Compliant | SPI Serial | 256K (32K x 8) | 2.7 V ~ 3.6 V | Tape & Reel (TR) | 8-VDFN Exposed Pad | MR25H256 | 32 K x 8 | -40°C ~ 125°C | 4,000 | 40MHz | MRAM (Magnetoresistive RAM) | 8-DFN-EP, Small Flag (5x6) | 8 bit | RAM | 20 mA | 0.6 W | - | 2.7 V to 3.6 V | - | 0.6 W | 20 mA | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
 | 36 | 1: ¥45.696 | - | RoHS Compliant | SPI | 256 kbit | 3.6 V | Tray | DFN-8 | MR25H256A | Everspin Technologies | - 40 C to + 85 C | - | - | - | - | 8 bit | - | 6 mA, 23 mA | 600 mW | SMD/SMT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
 | 1085 | 1: ¥44.88 | - | RoHS Compliant | SPI | 256 kbit | 3.6 V | Tray | DFN-8 | MR25H256A | Everspin Technologies | - 40 C to + 125 C | - | - | - | - | 8 bit | - | 6 mA, 23 mA | 600 mW | SMD/SMT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 10 | 1140: ¥54.4544 | - | RoHS Compliant | SPI | 256 kbit | 3.6 V | Tray | DFN-8 | MR25H256A | Everspin Technologies | - 40 C to + 85 C | - | - | - | - | 8 bit | - | 6 mA, 23 mA | 600 mW | SMD/SMT | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |