AT24C02D-STUM-T

Memory IC Overview

The AT24C02D-STUM-T is a 2-Kbit (256 x 8) serial EEPROM manufactured by Microchip Technology. It operates within a supply voltage range of 1.7V to 3.6V and supports I²C-compatible two-wire serial interfaces at Standard mode (100 kHz), Fast mode (400 kHz), and Fast Mode Plus (1 MHz). The device features a write-protect pin for hardware data protection, self-timed write cycles up to 5 ms, and an access time of 450 ns. It is housed in a 5-lead SOT-23 package and functions reliably across an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports bidirectional data transfer via I²C-compatible two-wire serial interface with Schmitt triggers and filtered inputs for noise suppression.
• Includes a dedicated write-protect pin that inhibits all write operations when connected directly to VCC.
• Features internal organization allowing partial page writes within an 8-byte page write mode.
• Incorporates a Power-on Reset circuit to prevent spurious events during power-up sequences.

Memory IC Applications

• Industrial and commercial applications requiring low-power and low-voltage operations
• Systems utilizing cascading features to share a common two-wire bus
• Hardware configurations requiring full array hardware data protection

Memory IC Procurement Notes

Verify the specific ordering suffix STUM-T corresponds to the 5-lead SOT-23 package configuration. Confirm that the application environment remains within the specified 1.7V to 3.6V supply voltage limits. Ensure the design accommodates the industrial temperature range of -40°C to +85°C. Check datasheet requirements for external pull-up resistors on SDA and SCL lines if operating near maximum clock frequencies.

Memory IC Selection Notes

Select this component when a 2-Kbit non-volatile memory solution is required with a compact 5-lead SOT-23 footprint. It is suitable for designs needing hardware write protection and operation below 3.6V. Consider the 1 MHz Fast Mode Plus capability only if the system voltage supports 2.5V to 3.6V operation. Verify address pin handling for the SOT-23 variant where A0, A1, and A2 are internally pulled down.

Memory IC Part Context

This part belongs to the AT24C01D/AT24C02D series of I²C-compatible Serial EEPROMs from Microchip Technology. The series provides 1-Kbit and 2-Kbit capacities organized as 128 x 8 or 256 x 8 arrays. These devices are optimized for environments demanding low-power consumption and robust data retention characteristics over extended periods.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include AT24C02C-STUM-T.