24AA515-I/SM

Memory IC Overview

The Microchip Technology 24AA515-I/SM is a 64K x 8 (512 Kbit) Serial Electrically Erasable PROM. It operates with a single supply voltage ranging from 1.7V to 5.5V and supports a maximum clock frequency of 400 kHz. The device utilizes a 2-Wire I²C compatible serial interface and features a 64-byte page write buffer. It is housed in an 8-lead SOIJ package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports cascading up to four devices on the same data bus for expanded memory capacity
• Includes hardware write protection via the WP pin to inhibit array writes
• Features Schmitt trigger inputs for improved noise suppression
• Provides output slope control to eliminate ground bounce

Memory IC Applications

• Personal communications systems
• Data acquisition applications
• Advanced low-power electronic designs

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type, as the datasheet lists both PDIP and SOIJ options for this family. Confirm the temperature grade matches the application requirements, noting that the 'I' suffix denotes the industrial range. Ensure the voltage supply aligns with the 1.7V to 5.5V operational limits specified for the 24AA515 variant.

Memory IC Selection Notes

Select this component when a 512 Kbit EEPROM with I²C compatibility is required. The 24AA515 offers a wider voltage range starting at 1.7V compared to the 2.5V minimum of the 24LC515. Choose this part over the 24FC515 if a lower maximum clock frequency of 400 kHz is sufficient, as the 24FC515 supports 1 MHz operation.

Memory IC Part Context

This device belongs to the 24XX515 series of CMOS Serial EEPROMs manufactured by Microchip Technology. The series includes variants such as the 24LC515 and 24FC515, which share similar functional architectures but differ in operating voltage ranges and maximum clock frequencies. The 24AA515 specifically targets applications requiring operation down to 1.7V.

Memory IC Replacement Considerations

The 24LC515 and 24FC515 are functionally related parts within the same datasheet. However, they have different minimum operating voltages (2.5V) and clock speeds. Direct substitution requires verifying that the system voltage remains above 2.5V if replacing the 24AA515 with these alternatives.