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DS2431P+
+BOMEEPROM
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Nhà sản xuấtAnalog Devices / Maxim Integrated
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Ông. Phần #DS2431P+
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Description
DS2431P+ is Maxim/Dallas’ 1‑Wire EEPROM memory device. It sits on a 1‑Wire bus and provides non‑volatile storage plus a unique ROM ID for each device.
Key points:
- Memory: about 1 Kbit total (128 bytes) plus an 8‑byte scratchpad used for safe writes.
- Identification: 64‑bit unique ROM code for bus addressing.
- Access: Read Memory, Write Scratchpad, Copy Scratchpad, and other standard 1‑Wire function commands.
- Protection: memory protection options (write/read protection, lock features).
- Power: supports parasitic power (bus-powered) and normal Vdd operation.
- Packaging/temperature: small packages with suitable temp ranges per datasheet.
- P+ variant: enhanced features relative to DS2431, typically related to security, reliability, or extended environmental specs (check exact datasheet for changes).
Typical uses:
- Identity/authentication, asset tracking, anti‑tamper sensing, simple data logging.
How to use (high level):
- On a 1‑Wire master, perform ROM select (Match/Skip ROM), issue function commands to read/write memory (via scratchpad), and follow proper timing and power-mode rules. Refer to the DS2431P+ datasheet for exact details.
Key points:
- Memory: about 1 Kbit total (128 bytes) plus an 8‑byte scratchpad used for safe writes.
- Identification: 64‑bit unique ROM code for bus addressing.
- Access: Read Memory, Write Scratchpad, Copy Scratchpad, and other standard 1‑Wire function commands.
- Protection: memory protection options (write/read protection, lock features).
- Power: supports parasitic power (bus-powered) and normal Vdd operation.
- Packaging/temperature: small packages with suitable temp ranges per datasheet.
- P+ variant: enhanced features relative to DS2431, typically related to security, reliability, or extended environmental specs (check exact datasheet for changes).
Typical uses:
- Identity/authentication, asset tracking, anti‑tamper sensing, simple data logging.
How to use (high level):
- On a 1‑Wire master, perform ROM select (Match/Skip ROM), issue function commands to read/write memory (via scratchpad), and follow proper timing and power-mode rules. Refer to the DS2431P+ datasheet for exact details.
Features
DS2431P+ is a 1-Wire, 1-Kbit EEPROM with parasite-power option. Key features:
- 1-Wire interface (standard and Overdrive speeds) with a unique 64-bit ROM ID for device addressing.
- 128 bytes of user EEPROM memory (page/bulk write capability).
- CRC-8 support for data integrity in software.
- Parasite-power capable (P+): can operate without a dedicated Vdd, with a strong pull-up during writes.
- Low power operation; quick active write cycles; data retention typically >10 years.
- Operating range: approximately 2.8–5.5 V; industrial temp range often -40°C to +85°C.
- Small package options; widely used for identification, configuration, and secure memory in embedded systems.
- 1-Wire interface (standard and Overdrive speeds) with a unique 64-bit ROM ID for device addressing.
- 128 bytes of user EEPROM memory (page/bulk write capability).
- CRC-8 support for data integrity in software.
- Parasite-power capable (P+): can operate without a dedicated Vdd, with a strong pull-up during writes.
- Low power operation; quick active write cycles; data retention typically >10 years.
- Operating range: approximately 2.8–5.5 V; industrial temp range often -40°C to +85°C.
- Small package options; widely used for identification, configuration, and secure memory in embedded systems.
Pinout
- Pin count: 3 pins
- Function: DS2431P+ is a 1-Wire EEPROM. Pinout (typical): GND, DQ (1-Wire data I/O; bidirectional and can supply parasitic power), VDD (supply). DQ is the bus line for commands/data; device stores non-volatile data. The part can be powered from VDD or parasitically via DQ if VDD is not used.
- Function: DS2431P+ is a 1-Wire EEPROM. Pinout (typical): GND, DQ (1-Wire data I/O; bidirectional and can supply parasitic power), VDD (supply). DQ is the bus line for commands/data; device stores non-volatile data. The part can be powered from VDD or parasitically via DQ if VDD is not used.
Manufacturer
Manufacturer: Maxim Integrated (originally Dallas Semiconductor). Maxim is an American multinational semiconductor company that designs and manufactures analog and mixed-signal integrated circuits; it is now part of Analog Devices.
Application
DS2431P+ 是一款 1-Wire 非易失性 1K 位 EEPROM，应用领域包括：
- 设备唯一识别与认证
- 配置与标定数据的非易失存储
- 事件/数据日志与审计记录
- 资产与库存追踪管理
- 设备 provisioning 与 远程配置
- 微控制器的备份存储
- 汽车/工业设备的持久配置与历史数据
- 环境数据（温湿度等）的轻量记录
注：单总线接口、低引脚需求、易于嵌入式系统集成。
- 设备唯一识别与认证
- 配置与标定数据的非易失存储
- 事件/数据日志与审计记录
- 资产与库存追踪管理
- 设备 provisioning 与 远程配置
- 微控制器的备份存储
- 汽车/工业设备的持久配置与历史数据
- 环境数据（温湿度等）的轻量记录
注：单总线接口、低引脚需求、易于嵌入式系统集成。
Package
DS2431P+ is a 1‑Kb 1‑Wire EEPROM available in an 8‑pin plastic package (SOIC/DIP‑8).
