General Description
The DS2431-A1 is an AEC-Q100 Grade 1 qualified version of the DS2431. The logical behavior of both versions is identical. The DS2431-A1 is a 1024-bit, 1-Wire® EEPROM chip organized as four memory pages of 256 bits each. Data is written to an 8-byte scratchpad, verified, and then copied to the EEPROM memory. As a special feature, the four memory pages can individually be write protected or put in EPROM-emulation mode, where bits can only be changed from a 1 to a 0 state.
The DS2431-A1 communicates over the single-conductor 1-Wire bus. The communication follows the standard 1-Wire protocol. Each device has its own unalterable and unique 64-bit ROM registration number that is factory lasered into the chip. The registration number is used to address the device in a multidrop 1-Wire net environment.
Applications
Automotive Sensor Identification and Calibration
Data Storage
Automotive Cable Assembly Identification
Accessory/PCB Identification
Features
♦ 1024 Bits of EEPROM Memory Partitioned Into Four Pages of 256 Bits
♦ Individual Memory Pages Can Be Permanently Write Protected or Put in EPROM-Emulation Mode (“Write to 0”)
♦ Switchpoint Hysteresis and Filtering to Optimize Performance in the Presence of Noise
♦ IEC 1000-4-2 Level 4 ESD Protection (8kV Contact, 15kV Air, Typ)
♦ Reads and Writes Over a 4.5V to 5.25V Voltage Range from -40°C to +125°C
♦ Communicates to Host with a Single Digital Signal at 15.4kbps Using 1-Wire Protocol
♦ Meets AEC-Q100 Grade 1 Qualification Requirements
♦ Also Available as Standard Version for Industrial Temperature Range (DS2431)
点击查看 ：
DS2431-A1.pdf
