Overview
The DS2431P-A1+ is a 1024-bit, 1-Wire® EEPROM chip designed for automotive applications, manufactured by Analog Devices Inc./Maxim Integrated. This component is AEC-Q100 Grade 1 qualified, ensuring high reliability and performance in harsh automotive environments. The DS2431P-A1+ is organized into four memory pages of 256 bits each and features a unique 64-bit ROM registration number for absolute traceability in multidrop 1-Wire net environments. The device communicates via a single-conductor 1-Wire bus, following the standard 1-Wire protocol, and supports a wide operating temperature range from -40°C to +125°C.
Key Specifications
| Specification | Details |
|---|---|
| Memory Capacity | 1024 bits, organized into four pages of 256 bits each |
| Communication Protocol | 1-Wire protocol, 15.4kbps |
| Operating Voltage Range | 4.5V to 5.25V |
| Operating Temperature Range | -40°C to +125°C |
| ESD Protection | IEC 1000-4-2 Level 4 (+8kV Contact, +15kV Air, typ) |
| Unique Identifier | 64-bit ROM registration number, factory lasered |
| Write Protection | Individual memory pages can be permanently write protected or put in EPROM-emulation mode |
| Package Type | TSOC-6 |
Key Features
- 1024 bits of EEPROM memory partitioned into four pages of 256 bits each
- 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
- Minimalist 1-Wire interface lowers cost and interface complexity
- IEC 1000-4-2 Level 4 ESD protection (+8kV Contact, +15kV Air, typ)
- Communicates to host with a single digital signal at 15.4kbps using 1-Wire protocol
- Meets AEC-Q100 Grade 1 qualification requirements
Applications
- Automotive sensor identification and calibration data storage
- Automotive cable assembly identification
- Accessory/PCB identification
- Medical sensor calibration data storage
- Ink and toner print cartridge identification
- After-market management of consumables
Q & A
- What is the memory capacity of the DS2431P-A1+?
The DS2431P-A1+ has a memory capacity of 1024 bits, organized into four pages of 256 bits each.
- What is the operating temperature range of the DS2431P-A1+?
The operating temperature range is from -40°C to +125°C.
- What type of communication protocol does the DS2431P-A1+ use?
The DS2431P-A1+ uses the 1-Wire protocol for communication.
- Does the DS2431P-A1+ have ESD protection?
Yes, it has IEC 1000-4-2 Level 4 ESD protection (+8kV Contact, +15kV Air, typ).
- Can individual memory pages be write protected?
Yes, individual memory pages can be permanently write protected or put in EPROM-emulation mode.
- What is the unique identifier for each DS2431P-A1+ device?
Each device has a unique 64-bit ROM registration number that is factory lasered into the chip.
- What are some common applications of the DS2431P-A1+?
Common applications include automotive sensor identification, cable assembly identification, accessory/PCB identification, and medical sensor calibration data storage.
- Is the DS2431P-A1+ AEC-Q100 qualified?
Yes, the DS2431P-A1+ meets AEC-Q100 Grade 1 qualification requirements.
- How does the DS2431P-A1+ handle data writing?
Data is written to an 8-byte scratchpad, verified, and then copied to the EEPROM memory.
- What is the purpose of the switchpoint hysteresis and filtering in the DS2431P-A1+?
The switchpoint hysteresis and filtering are used to optimize performance in the presence of noise.
