The Microchip Technology Inc. 25AA02UID is a 2 Kbit Serial EEPROM that operates within a voltage range of 1.8V to 5.5V and features a pre-programmed 32-bit unique serial number. It utilizes a Serial Peripheral Interface (SPI) for communication, requiring a clock input (SCK), data in (SI), and data out (SO) lines, with access controlled by a Chip Select (CS) input. The device supports a maximum clock frequency of 10 MHz and offers low power consumption, with a maximum write current of 5 mA and a standby current of 1 ¬µA at 2.5V. The EEPROM is organized as 256 x 8 bits and supports write page mode for up to 16 bytes, along with self-timed erase and write cycles that take a maximum of 5 ms. It includes block write protection options and built-in write protection features, such as power-on/off data protection circuitry and a write-protect pin. The device is rated for high reliability, with an endurance of 1,000,000 erase/write cycles and data retention exceeding 200 years. It is also ESD protected up to 4000V and operates within an industrial temperature range of -40¬8C to +85¬8C. The 25AA02UID is available in 8-lead SOIC and 6-lead SOT-23 packages.
The Microchip Technology Inc. 25AA02UID is a 2 Kbit Electrically Erasable PROM with a pre-programmed, 32-bit unique ID. This serial number is unique across all UID-Family EEPROMs. The ID is Scalable to 48-bit, 64-bit, 128-bit, 256-bit, and other lengths. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input. Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts. The 25AA02UID is available in the standard 8-lead SOIC and 6-lead SOT-23 packages.
Additional Features
| Microchip Technology, Inc. | |
|---|---|
| Product Category | Memory Chips |
| Product Number | 25aa02uid |
| Product Name | 2Kb 1.8V SPI Serial EEPROM with Pre-Programmed Serial Number |
| Memory Category | EEPROM |
| Data Rate | 10 MHz |
| Data Retention | 200 years |
| Endurance | 1000000 Write/Erase Cycles |
