DS2431

DS2431 is a Maxim/Dallas 1-Wire device: a 1-kilobit (128-byte) EEPROM that stores data on a single data line.
Key points:
- Interface: 1-Wire bus (data line plus ground). Can be powered from the bus (parasite power) or from a dedicated Vdd; requires a pull-up on the data line.
- ROM: Each device has a unique 64-bit ROM code used to address it on a shared 1-Wire bus.
- Memory: 128 bytes of non-volatile storage, typically organized for 8-byte pages. Read and write operations are done via the 1-Wire Read/Write scratchpad protocol and a final copy to memory.
- Usage: Common in iButton/embedded projects for simple data logging, calibration data, configuration storage, or small data records.
- Tools: Supported by standard 1-Wire libraries (e.g., OneWire for Arduino) and 1-Wire master interfaces.
Why use it: low-pin-count, inexpensive non-volatile storage with straightforward 1-Wire communications suitable for many embedded and asset-tracking applications.

DS2431 is a 1-Wire EEPROM device. Key features:
- 1-Wire interface (single data line + ground) with standard and overdrive speeds
- 1 Kbit (128-byte) nonvolatile memory
- 64-bit unique ROM ID for bus addressing
- 8-byte page write capability (read operations are supported)
- Parasitic-power option (can operate from the 1-Wire line or with an external Vdd)
- Memory protection/lock features to guard against unauthorized writes
- Long data retention and typical EEPROM write-cycle reliability
- Wide operating range: supports industrial-grade temperatures (typical range around -40°C to +85°C)
- Available in iButton and surface-mount formats for flexible integration
Note: exact page size, protection granularity, and temperature range may vary by variant; consult the datasheet for specifics.

- Pin count: 8 pins (DIP-8/SOIC-8 packages are standard).
- Function: DS2431 is a 1‑Kbit (128-byte) non-volatile memory accessed via Maxim’s 1‑Wire interface. It stores data on a single data line (DQ) with GND and Vdd power (parasite-power capable). Other pins are typically No Connect or reserved.

Manufacturer: Dallas Semiconductor (now part of Maxim Integrated; later under Analog Devices).
What kind of company: a semiconductor company that designs and manufactures integrated circuits (ICs) and related electronic components.

DS2431 is a 1-Wire EEPROM. It’s available in two package types: the iButton metal can (cylindrical) and a standard 8-pin package for PCB use (DIP-8/SOIC-8).