24AA08H-I/ST

Memory IC Overview

The Microchip Technology 24AA08H-I/ST is an 8 Kbit Electrically Erasable PROM organized as four blocks of 256 x 8-bit memory. It features a 2-wire I2C compatible serial interface with a maximum clock frequency of 400 kHz for VCC between 2.5V and 5.5V, and 100 kHz for VCC below 2.5V. The device operates on a single supply ranging from 1.7V to 5.5V. It includes hardware write-protect functionality for the upper half of the array (addresses 200h-3FFh) via the WP pin. The component supports page writes up to 16 bytes and offers data retention exceeding 200 years.

Memory IC Feature Summary

• Supports low-voltage operation down to 1.7V with standby current of 1 µA maximum.
• Includes Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination.
• Provides hardware write protection for half-array access when the WP pin is tied to VCC.

Memory IC Applications

• Industrial embedded systems requiring non-volatile data storage
• Low-power consumer electronics operating at reduced voltages
• Data logging applications needing hardware write protection

Memory IC Procurement Notes

Verify that the ordering suffix 'I' confirms the Industrial temperature range (-40°C to +85°C). Confirm the 'ST' suffix corresponds to the TSSOP package type. Ensure the specific revision matches the required datasheet version DS20002084B. Check RoHS compliance status if restricted substances are a constraint.

Memory IC Selection Notes

Select this part for designs requiring 8 Kbit capacity with I2C connectivity. The 24AA08H variant is suitable for systems operating below 2.5V, unlike the 24LC08BH which requires a minimum of 2.5V. Consider the 16-byte page buffer for efficient data writing. Verify voltage levels match the system's VCC range to ensure proper logic thresholds.

Memory IC Part Context

This component belongs to the 24XX08H family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24LC08BH but differs in minimum operating voltage. The device is designed for general-purpose non-volatile memory applications where space and power consumption are critical factors.

Memory IC Replacement Considerations

The 24LC08BH serves as a direct pin-compatible alternative within the same package, though it requires a minimum supply voltage of 2.5V compared to the 24AA08H's 1.7V minimum. Other 8 Kbit I2C EEPROMs may require level shifting or voltage adjustment.