DS28E07+T

DS28E07+T is a 1-Wire secure element (hardware security module) from Maxim Integrated (now Analog Devices). It provides hardware-based authentication and secure data/key storage on a 1-Wire bus, enabling strong device identity and protection against tampering or counterfeit devices.
Key points
- Interface: 1-Wire bus (DQ, GND, Vcc) with standard 1-Wire commands.
- Security: stores cryptographic keys in protected memory and supports cryptographic mutual authentication with a host MCU via a challenge–response protocol.
-用途: secure provisioning, firmware/data protection, anti-counterfeiting, and secure communications for IoT or sensor networks.
- Features: unique device identity, protected keys, secure RNG, and low-power operation.
- +T variant: typically indicates a temperature/industrial-grade version—confirm exact temperature range in the datasheet.
For implementation, consult the DS28E07 datasheet and application notes; use the host MCU to issue the authentication challenge/response and manage keys as required by your security model.

DS28E07+T is a Maxim 1-Wire secure memory device. Key features include:
- 1-Wire interface for simple single-wire bus operation (works with standard masters)
- Secure memory with block-level password protection and access control
- Unique 64-bit ROM code for device identification
- Password- or crypto-based authentication to read/write memory
- Per-block write protection and tamper/resistance features
- Data integrity support (CRC checks)
- Parasitic-power capable (bus-powered) operation and normal power mode
- Wide operating voltage and temperature ranges (datasheet specifies exact limits)
- Available in compact package options suitable for embedded use
Note: Exact memory size, block structure, and voltage/temperature specs depend on the specific revision; consult the DS28E07+T datasheet for detailed electrical characteristics and memory organization.

- Pin count: 8 pins (SOIC-8). The +T suffix indicates Tape & Reel packaging.
- Function: DS28E07+T is a 1-Wire master/bridge device that provides a dedicated 1-Wire interface to communicate with 1-Wire devices and manage bus power.

- Manufacturer: Analog Devices, Inc. (the DS28E07+T comes from Maxim Integrated’s line, now part of Analog Devices).
- Company type: A multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits.

- Secure authentication and anti-counterfeiting for 1-Wire devices and peripherals
- Tamper-resistant key storage and cryptographic operations (e.g., SHA-256) for firmware signing and secure boot
- Device provisioning, commissioning, and secure software/firmware updates in IoT/embedded systems
- Asset tracking, warranty validation, and supply-chain security
- Automotive/industrial use: ECU and sensor authentication, secure boot in harsh environments
- Access control and feature licensing for electronics and consumer devices

DS28E07+T is an 8-pin SOIC (surface-mount) package; the “+T” suffix denotes Tape‑and‑Reel packaging.