• Pre-programmed 32-bit Serial Number
• Unique Across All UID-Family EEPROMs
• Scalable to 48-bit, 64-bit, 128-bit, 256-bit,and other lengths
• Low-Power CMOS Technology: -- 1 mA active current, typical -- 1 µA standby current (max.)
• 256 x 8 Bit Organization
• Schmitt Trigger Inputs for Noise Suppression
• Output Slope Control to Eliminate Ground Bounce 100 kbps Max. Bit Rate – Equivalent to 100 kHz Clock Frequency
• Self-Timed Write Cycle (including Auto-Erase Page-Write Buffer for up to 16 Bytes)
• STATUS Register for Added Control: -- Write enable latch bit -- Write-In-Progress bit
• Block Write Protection: -- Protect none, 1/4, 1/2 or all of array
• Built-in Write Protection: -- Power-on/off data protection circuitry -- Write enable latch
• Endurance: 1,000,000 erase/write cycles
• Data retention: > 200 years
• ESD protection: > 4,000V
• 3-lead SOT-23 and 8-lead SOIC Packages
• Available Temperature Ranges: -- Industrial (I): -40C to +85C

The Microchip Technology Inc. 11AA02UID is a 2 Kbit Electrically Erasable PROM with a pre-programmed, 32-bit unique ID. This serial number is unique across all UID-Family of EEPROMs. The ID is Scalable to 48-bit, 64-bit, 128-bit, 256-bit, and other lengths. The device is organized in blocks of x8-bit memory and support the patented* single I/O UNI/O® serial bus. By using Manchester encoding techniques, the clock and data are combined into a single, serial bit stream (SCIO), where the clock signal is extracted by the receiver to correctly decode the timing and value of each bit. Low-voltage design permits operation down to 1.8V, with standby and active currents of only 1 uA and 1 mA, respectively. The 11AA02UID is available in standard 8-lead SOIC and 3-lead SOT-23 packages.