24AA01H-I/S16K

Memory IC Overview

The Microchip Technology 24AA01H-I/S16K is a 1 Kbit (128 x 8) serial EEPROM utilizing an I²C-compatible 2-wire interface. It operates on a single supply voltage ranging from 1.7V to 5.5V, supporting clock frequencies up to 400 kHz at VCC ≥ 2.5V and 100 kHz below that threshold. The device features hardware write-protect for the upper half of the memory array (addresses 40h-7Fh), Schmitt trigger inputs for noise suppression, and output slope control to minimize ground bounce. It offers over one million erase/write cycles and data retention exceeding 200 years.

Memory IC Feature Summary

• Hardware write-protect capability allows locking the upper half of the memory array via the WP pin while maintaining read access.
• Integrated Schmitt triggers and filter circuits suppress noise spikes on SDA and SCL lines to ensure reliable operation in noisy environments.
• Output slope control circuitry eliminates ground bounce during switching events, improving signal integrity.
• Supports acknowledge polling to maximize bus throughput by allowing the master to detect when internal write cycles are complete.

Memory IC Applications

• Low-power embedded systems requiring non-volatile storage with minimal active current consumption
• Industrial applications operating within the -40°C to +85°C temperature range
• Systems utilizing I²C buses where hardware-level protection for specific memory segments is required

Memory IC Procurement Notes

Verify the specific package suffix matches the required form factor, as the 'S16K' designation indicates a tape-and-reel packaging format. Confirm the industrial temperature grade ('I') aligns with operational environmental requirements. Ensure the voltage supply meets the minimum 1.7V threshold for full functionality. Cross-reference the datasheet revision to confirm compatibility with existing design specifications.

Memory IC Selection Notes

Select this component for designs prioritizing low standby current and wide voltage flexibility down to 1.7V. It is suitable for space-constrained applications due to available small packages like SC-70 and SOT-23. Choose this part if hardware write-protection for half the array is necessary without software overhead. Ensure the system supports I²C timing requirements, particularly regarding rise/fall times and bus capacitance limits.

Memory IC Part Context

This device belongs to the 24AA01H/24LC01BH family of 1 Kbit serial EEPROMs. It shares functional similarities with the 24LC01BH but differs in its lower minimum operating voltage of 1.7V compared to the 2.5V minimum of the LC variant. Both devices utilize the same I²C protocol and physical pinouts, facilitating potential design swaps where voltage headroom permits.

Memory IC Replacement Considerations

The 24LC01BH serves as a compatible alternative if the application voltage remains above 2.5V. Verify that any substitute maintains the same I²C addressing scheme and page write buffer size. Ensure the replacement package type matches the PCB footprint constraints.