This datasheet describes the Maxim DS2432, a single-chip device integrating 1024-bit EEPROM, a 64-bit key, and a 512-bit SHA-1 engine for secure…
The DS2432 is a single-chip device that integrates a 1024-bit EEPROM, a 64-bit key, an 8-byte register/control page, and a 512-bit SHA-1 engine with a full-function 1-Wire interface. Each unit features a unique 64-bit ROM code laser-etched at the factory to ensure absolute traceability.
The device supports write access only when the correct key is known and can calculate and transmit a 160-bit Message Authentication Code (MAC) to verify authenticity. It allows for write protection of the key and data memory or operation in EPROM emulation mode ('Write 0', Page 1). The chip operates within a wide voltage range of 2.8V to 5.25V and temperatures from -40°C to +85°C. This manual is written in Chinese.
| EEPROM Capacity | 1024 bits (four pages of 256 bits each) |
|---|---|
| SHA-1 Engine Size | 512-bit |
| MAC Length | 160 bits |
| Key Size | 64-bit |
| Operating Voltage Range | 2.8V to 5.25V |
| Communication Rate (Standard) | 16.3 kbps |
| Communication Rate (High Speed) | 142 kbps |
Write access requires knowing the key, and the device can calculate and transmit a 160-bit MAC to verify authenticity.
The device is available in a 6-pin TSOC surface mount package or a 6-ball µCSP package.