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DS2502-E48
The four bytes at memory addresses 01h to 04h contain the UniqueWare Project ID 00001129h. The two
bytes at addresses 0Bh and 0Ch are the inverted 16-bit CRC over the length byte, Project ID and node
address value. The least significant byte of the CRC is stored at address 0Bh. This CRC is generated
according to the standardized CRC16 polynomial function X 16 + X 15 + X 2 + 1. For more details on
generating CRC values including examples in both hardware and software, see Application Note 27,
Understanding and Using Cyclic Redundancy Checks with Maxim iButton Products .
The contents of the memory address range 0Dh to 1Fh is FFh. These cells cannot be altered since the
whole memory page is write-protected. The memory range from 20h to 7Fh, however, is user-
programmable. It can be write-protected by programming the corresponding write-protect bit in the status
memory of the DS2502-E48.
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相关代理商/技术参数
DS2502P-E48+TR 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:48-Bit Node Address Chip
DS2502P-E64 制造商:Maxim Integrated Products 功能描述:IEEE EUI-64 NODE ADDR TSOC - Rail/Tube
DS2502P-E64+ 功能描述:可擦除可编程ROM 1Kb Add-Only Memory RoHS:否 制造商:Maxim Integrated 类型: 存储容量:1024 bit 组织:1 K x 1 接口类型: 工作电流:5 uA 编程电压: 工作电源电压:2.8 V to 6 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:TO-92
DS2502PU-112F+T 功能描述:可擦除可编程ROM RoHS:否 制造商:Maxim Integrated 类型: 存储容量:1024 bit 组织:1 K x 1 接口类型: 工作电流:5 uA 编程电压: 工作电源电压:2.8 V to 6 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:TO-92
DS2502PU-1176+ 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
DS2502PU-1186+T 制造商:Maxim Integrated Products 功能描述:DS2502 1KB ADD-ONLY MEMORY - Tape and Reel
DS2502P-UNW 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:UniqueWare Add-Only Memory
DS2502P-UNW-1149/T&R 功能描述:可擦除可编程ROM RoHS:否 制造商:Maxim Integrated 类型: 存储容量:1024 bit 组织:1 K x 1 接口类型: 工作电流:5 uA 编程电压: 工作电源电压:2.8 V to 6 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:TO-92