DS2431-A1：1024-Bit, 1-Wire EEPROM for Automotive Applications
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.
Key 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)
| Applications/Uses- Accessory/PCB Identification
- Automotive Cable Assembly Identification
- Automotive Sensor Identification and Calibration Data Storage
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DataSheet
Parametrics
| Part Number | Memory Type | Memory Size | Bus Type | VSUPPLY
(V) | Package/Pins | Budgetary
Price |
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| max | See Notes |
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| DS2431-A1 | EEPROM | 1K x 1 | 1-Wire | 5.25 | TSOC/6 | $1.56 @1k |
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Related Products
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|
| DS2431P-A1+ | Active | NA | TSOC,;6 pin;17.8 mm² | -40°C to +125°C | Lead Free |
| DS2431P-A1+T | Active | NA | TSOC,;6 pin;17.8 mm² | -40°C to +125°C | Lead Free |
