34AA02T-I/MNY

Overview

The Microchip Technology 34AA02T-I/MNY is a 2 Kbit (256 x 8) serial EEPROM featuring an I²C-compatible 2-wire interface. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports clock frequencies of up to 400 kHz. The device utilizes low-power CMOS technology, drawing typical standby current of 100 nA and active read current of 1 mA. It includes a 16-byte page write buffer with a typical write cycle time of 5 ms. The component is housed in an 8-lead TDFN package and is rated for industrial operating temperatures between -40°C and +85°C.

Feature Summary

• Features permanent and resettable software write protection for the lower half of the memory array alongside hardware write protection via the WP pin.
• Incorporates Schmitt trigger inputs and output slope control to suppress noise spikes and eliminate ground bounce during operation.
• Supports cascading up to eight devices on the same bus using chip select pins A0, A1, and A2.

Applications

• Data logging applications requiring non-volatile storage
• Configuration parameter storage in embedded systems
• Calibration data retention in industrial sensors

Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C). Confirm the 'MNY' suffix indicates the specific 8-TDFN(2x3) surface mount package type. Ensure the design accounts for the required pull-up resistors on SDA and SCL lines compatible with the selected bus speed.

Selection Notes

Select this component when a small footprint is required due to its compact TDFN packaging. It is suitable for designs needing flexible write protection schemes for critical data segments. Verify that the system power supply remains within the 1.7V to 5.5V range to ensure proper functionality and adherence to electrical specifications.

Part Context

This part belongs to the 34AA02/34LC02 family of 2 Kbit serial EEPROMs manufactured by Microchip Technology. While functionally similar to the 34LC02, the 34AA02 variant supports operation down to 1.7V, whereas the LC version typically requires a minimum of 2.2V. Both share identical pinouts and memory organization.

Replacement Considerations

Public confirmed substitute part numbers: 24AA02T-I/MNY, 24LC02T-I/MNY, 25AA02T-I/MNY.