25AA02UID Datasheet | Microchip Technology

Features : - Preprogrammed 32-Bit Serial Number: - Unique across all UID-family EEPROMs - Scalable to 48-bit, 64-bit, 128-bit, 256-bit, and other lengths - 10 MHz max. Clock Frequency - Low-Power CMOS Technology: - Max. write current: 5 m A at 5.5V - Read current: 5 m A at 5.5V, 10 MHz - Standby current: 1 A at 2.5V - 256 x 8-Bit Organization - Write Page mode (up to 16 bytes) - Sequential Read - Self-Timed Erase and Write Cycles (5 ms max.) - 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 - Write-protect pin - High Reliability: - Endurance: 1,000,000 erase/write cycles - Data retention: >200 years - ESD protection: >4000V - Temperature Ranges Supported: - Industrial (I): -40C to +85C - Ro HS pliant Description : The Microchip Technology Inc. 25AA02UID is a 2 Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) with a preprogrammed, 32-bit unique ID. The memory is accessed via a simple Serial Peripheral Interface (SPI) patible 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. munication 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. http://..net/ Pin Function Table Name CS SO WP VSS SI SCK HOLD VCC Function Chip Select Input Serial Data Output Write-Protect Ground Serial Data Input Serial Clock Input Hold Input Supply Voltage Package Types (not to scale) SOT-23 (OT) SCK VSS SI 1 2 3 6 5 4 VDD CS SO SOIC (SN) CS SO WP VSS 1 2 3...