24AA025UIDT-I/OT

• UID: Equipped with factory-locked unique serial number area
• T: Tape-and-reel bulk packaging for automated SMT assembly
• I: Industrial temperature grade
• OT: 6-lead ultra-small SOT-23 surface-mount package

1. Memory Architecture & Unique ID Feature

• Total storage capacity: 2 Kbit (256 × 8-bit bytes), split into two memory blocks
• 32-bit globally unique serial number pre-programmed at factory, permanently write-protected; cannot be erased or overwritten by user firmware
• Remaining memory space available for user-defined configuration data, calibration parameters and device logs
• 16-byte page write buffer; self-timed erase/write cycle with typical 3 ms page write time, max 5 ms
• Endurance: Over 1,000,000 erase/write cycles per address
• Data retention: Exceeds 200 years at 25°C without power supply

2. I²C 2-Wire Serial Interface

• Fully compatible with standard 100 kHz and fast-mode 400 kHz I²C bus
• Schmitt trigger input buffers suppress industrial bus noise; output slope control eliminates ground bounce interference
• 3 hardware address pins (A0/A1/A2) allow up to 8 identical devices cascaded on a single I²C bus
• No dedicated hardware write-protect (WP) pin design for simplified 6-pin SOT-23 layout
• Max random access time: 900 ns

3. Low-Voltage & Low-Power Specifications

• Single wide supply voltage range: 1.7 V to 5.5 V, compatible with 1.8 V, 3.3 V and 5 V embedded systems
• Low-power CMOS circuit design:
  • Max standby current: 1 µA
  • Max active read current: 1 mA
• Ideal for battery-powered portable devices, wireless sensor nodes and low-power IoT equipment

4. Protection & Reliability

• All signal pins support >4 kV contact ESD protection to withstand field wiring surges
• Self-contained timing logic prevents incomplete write operations during power drop
• No internal charge pump required; programming executed under normal operating voltage

5. Electrical & Environmental Ratings

• Operating temperature range (Industrial Grade I): -40°C to +85°C
• MSL 1 moisture sensitivity level, unlimited floor life without dry-bag storage before reflow soldering
• Fully RoHS lead-free and halogen-free compliant, no restricted SVHC substances

6. Package Information

• Package type: 6-pin ultra-small SOT-23 surface mount
• Compact dimension: 3.1 mm × 1.8 mm footprint, suitable for miniature sensor modules and dense PCB layouts
• Standard tape-and-reel packaging (T suffix) for high-volume mass production

Typical Applications

• Device traceability, anti-counterfeiting and asset identification via fixed unique serial number
• Industrial wireless sensor node calibration parameter storage
• Portable handheld test & measurement instrument configuration memory
• Consumer electronics (appliances, lighting, smart wearable) product ID recording
• IoT gateway, embedded single-board computer identity marking
• Medical portable equipment non-volatile configuration storage
• Automotive auxiliary module part number and batch code storage
• Smart building access control, environmental monitoring terminal data logging