24LC01B/ST

Memory IC Overview

The Microchip Technology 24LC01B/ST is a 1 Kbit (128 x 8) Electrically Erasable PROM (EEPROM) housed in an 8-lead TSSOP package. It operates on a single supply voltage ranging from 2.5V to 5.5V and supports a maximum clock frequency of 400 kHz via a 2-wire I²C compatible serial interface. The device features low-power CMOS technology with a standby current of 1 µA maximum and an operating current of 1 mA maximum. It includes hardware write protection, Schmitt trigger inputs for noise suppression, and output slope control to eliminate ground bounce.

Memory IC Feature Summary

• Supports page write operations with an 8-byte page write buffer for efficient data transfer.
• Features hardware write protection that inhibits write operations when the WP pin is tied to VCC.
• Includes Schmitt trigger inputs and filter circuits on SCL and SDA pins to suppress noise spikes.
• Provides acknowledge polling capability to determine when internal write cycles are complete.

Memory IC Applications

• Storing configuration parameters and user settings in embedded systems.
• Recording system status information and operational logs.
• Backing up security keys or calibration data in microcontroller-based designs.

Memory IC Procurement Notes

Verify the specific suffix '/ST' corresponds to the 8-lead TSSOP package as documented in the datasheet. Confirm the temperature grade matches the required application environment, noting that 'I' denotes Industrial range (-40°C to +85°C). Ensure the voltage supply aligns with the 2.5V minimum requirement for the 24LC01B series. Check RoHS compliance status if restricted substances are a concern for the manufacturing process.

Memory IC Selection Notes

Select this component when a non-volatile memory solution with a standard I²C interface is required for small data storage needs. The 24LC01B is suitable for applications where power consumption must be minimized during standby modes. Consider the 8-byte page write buffer for optimizing write throughput compared to byte-write operations. Ensure the design accommodates the necessary pull-up resistors for the open-drain SDA and SCL lines.

Memory IC Part Context

The 24LC01B is part of the 24XX01 family of 1 Kbit serial EEPROMs manufactured by Microchip Technology. This family shares common architectural features such as the 2-wire serial interface and similar electrical characteristics, differing primarily in voltage ranges and clock speeds among variants like the 24AA01 and 24FC01. The /ST suffix specifically identifies the surface-mount TSSOP packaging option within this product line.

Memory IC Replacement Considerations

The 24AA01 serves as a functional substitute with a wider voltage range down to 1.7V. The 24FC01 offers higher speed compatibility up to 1 MHz. Verify pinout compatibility and voltage requirements when substituting these devices, as the 24LC01B requires a minimum of 2.5V operation.