AT24CS01-STUM-T

Memory IC Overview

The AT24CS01-STUM-T is a 1-Kbit (128 x 8) I²C-compatible serial EEPROM manufactured by Microchip Technology. It operates within a supply voltage range of 1.7V to 5.5V and supports Standard mode (100 kHz), Fast mode (400 kHz), and Fast Mode Plus (1 MHz). The device features a unique, factory-programmed 128-bit serial number that is permanently locked. It includes hardware write protection via the WP pin and offers high reliability with 1,000,000 write cycle endurance and 100-year data retention. The component is housed in a 5-lead SOT-23 package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Includes a permanent, factory-programmed 128-bit unique serial number for product serialization
• Supports bidirectional data transfer via I²C interface with multiple speed modes
• Features hardware write protection through the dedicated WP pin
• Provides low-power operation with ultra-low standby current consumption

Memory IC Applications

• Industrial and commercial systems requiring low-voltage operation
• Product serialization and authentication in manufacturing lines
• Data storage for system configuration parameters
• Embedded devices needing secure hardware identification

Memory IC Procurement Notes

Verify the ordering suffix STUM-T corresponds to the 5-lead SOT-23 package and tape-and-reel delivery format. Confirm the specific revision level matches project requirements. Ensure the supplier provides traceability documentation consistent with Microchip quality standards. Check for RoHS compliance status as indicated in the datasheet packaging information.

Memory IC Selection Notes

Select this part when a unique hardware identifier is required alongside standard EEPROM functionality. The SOT-23 package is suitable for space-constrained designs. Ensure the host controller supports the desired I²C clock frequency and voltage levels. Consider the write-protect pin requirements if full array protection is needed during operation.

Memory IC Part Context

This component belongs to the AT24CS series of Serial EEPROMs from Microchip Technology. The CS designation indicates the inclusion of the unique serial number feature, distinguishing it from the standard AT24C series. The AT24CS01 variant specifically provides 1-Kbit capacity, while the AT24CS02 offers 2-Kbit. Both share identical interface and physical characteristics.

Memory IC Replacement Considerations

Direct substitutes include other AT24CS01 variants in different packages such as SOIC or TSSOP. Cross-brand replacements must match the 1.7V-5.5V operating range and I²C protocol. Verify pin compatibility if replacing in existing layouts, particularly regarding the SOT-23 footprint.