DS3644 1KB安全存储器，提供可编程篡改等级
the ds3644 is a secure supervisor with 1024 bytes of sram for the secure storage of sensitive data and the physical tamper-sensing response functions required in cryptographic processors and data security equipment.
one of the ds3644's primary features is the on-chip nonimprinting memory, consisting of eight 128-byte banks incorporating a high-speed, direct-wired clearing function. the 1kb memory is constantly complemented in the background to prevent memory imprinting of data. the ds3644 architecture allows the user to clear selective banks of the memory based upon specified tamper events. in the event of a qualified tamper event, the desired bank(s) of memory are rapidly cleared and a negative bias can be applied to erase external memory.
the ds3644 includes a seconds counter, watchdog timer, cpu supervisor, nonvolatile (nv) sram controller, and on-chip temperature sensor. in the event of a primary power failure, an external battery source is automatically switched in to keep the memory, time, and tamper-detection circuitry active. the ds3644 provides low-leakage, tamper-detection inputs for interface to external sensors, interlocks, and antitamper meshes. the ds3644 also invokes a tamper event on absolute temperature, if the temperature rate-of-change exceeds programmed limits, or if the crystal oscillator frequency falls outside a specified window. the tamper event is latched and timestamped for fault-recovery purposes.
access to the timer, tamper monitoring, memory, and device configuration is conducted through an i²c-compatible interface. the ds3644 is assembled in a pb-free, 7mm x 7mm x 0.8mm csbga package.
memory 1024-byte nonimprinting memory with high-speed erase 64 bytes general-purpose ram (not cleared) external sram control and optional tamper-event erasure segmented tamper-detection memory hierarchy with programmable tamper-event sources
tamper on-chip programmable temperature sensing with proprietary rate-of-change (roc) detector two general-purpose tamper-detect logic inputs four uncommitted tamper-detect comparator inputs four window comparators with on-chip reference voltage latching and timestamping of tamper events crystal oscillator tamper monitoring other programmable power-consumption options for very low standby current 64-bit unique silicon serial number on-chip random-number generator (rng) designed to meet nist fips 140-2 requirements 32-bit seconds counter with watchdog timer and alarm output cpu supervisor i²c-compatible interface 应用/使用
接入控制安全系统
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one of the ds3644's primary features is the on-chip nonimprinting memory, consisting of eight 128-byte banks incorporating a high-speed, direct-wired clearing function. the 1kb memory is constantly complemented in the background to prevent memory imprinting of data. the ds3644 architecture allows the user to clear selective banks of the memory based upon specified tamper events. in the event of a qualified tamper event, the desired bank(s) of memory are rapidly cleared and a negative bias can be applied to erase external memory.
the ds3644 includes a seconds counter, watchdog timer, cpu supervisor, nonvolatile (nv) sram controller, and on-chip temperature sensor. in the event of a primary power failure, an external battery source is automatically switched in to keep the memory, time, and tamper-detection circuitry active. the ds3644 provides low-leakage, tamper-detection inputs for interface to external sensors, interlocks, and antitamper meshes. the ds3644 also invokes a tamper event on absolute temperature, if the temperature rate-of-change exceeds programmed limits, or if the crystal oscillator frequency falls outside a specified window. the tamper event is latched and timestamped for fault-recovery purposes.
access to the timer, tamper monitoring, memory, and device configuration is conducted through an i²c-compatible interface. the ds3644 is assembled in a pb-free, 7mm x 7mm x 0.8mm csbga package.
memory 1024-byte nonimprinting memory with high-speed erase 64 bytes general-purpose ram (not cleared) external sram control and optional tamper-event erasure segmented tamper-detection memory hierarchy with programmable tamper-event sources
tamper on-chip programmable temperature sensing with proprietary rate-of-change (roc) detector two general-purpose tamper-detect logic inputs four uncommitted tamper-detect comparator inputs four window comparators with on-chip reference voltage latching and timestamping of tamper events crystal oscillator tamper monitoring other programmable power-consumption options for very low standby current 64-bit unique silicon serial number on-chip random-number generator (rng) designed to meet nist fips 140-2 requirements 32-bit seconds counter with watchdog timer and alarm output cpu supervisor i²c-compatible interface 应用/使用
接入控制安全系统
atm
加密处理器
电子商务服务器
游戏机
网络路由器和交换机
网络存储服务器
密码键盘
销售终端机(pos)
安全通信
机顶盒
智能读卡器
软件定义的无线装置
变频器在物流行业的应用
rfid带给自助结账怎样的便利
气压传感器bmp280与ms5611哪个好
中微爱芯16键电容式触摸芯片AiP5916替代汇顶科技HA3516(附触摸按键PCB设计指南)
中芯晶圆首批8英寸硅片顺利下线 10月量产！
DS3644 1KB安全存储器，提供可编程篡改等级
光纤耦合器的分类与使用说明
工信部发布最新14项电机标准发布内容摘要
十大Android设计趋势
分析为什么特斯拉要召回热泵传感器及其处理
三防漆绝缘阻抗偏低案例分析
美超微推私有、公有和混合云整体解决方案
恩智浦IoTT大篷车驶进深圳湾创业广场
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一加9 Pro将首次支持45W无线闪充、支持反向无线充电
玉米单穗脱粒机应用领域和效果分析
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第95届中国电子展品牌展商大曝光！
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