11AA010-I/W16K

Overview

The Microchip Technology 11AA010-I/W16K is a 1 Kbit (128 x 8) serial EEPROM utilizing the UNI/O single I/O interface. It operates within a supply voltage range of 1.8V to 5.5V and supports industrial temperature ranges from -40°C to +85°C. The device features a maximum bit rate of 100 kbps, 1 mA typical active current, and 1 µA maximum standby current. It includes a 16-byte page-write buffer, self-timed write cycles, and block write protection capabilities.

Feature Summary

• Supports the patented UNI/O single I/O serial bus protocol using Manchester encoding for clock and data integration.
• Features low-power CMOS technology with minimal active and standby current consumption suitable for battery-operated systems.
• Includes built-in write protection mechanisms such as power-on/off data protection circuits and a write enable latch.
• Provides high reliability with endurance ratings for one million erase/write cycles and data retention exceeding two hundred years.

Applications

• Microcontroller system configuration storage
• Calibration data retention in industrial sensors
• Device identification and parameter logging

Procurement Notes

Verify the specific suffix W16K against official documentation to confirm package type and tape/reel specifications. Ensure the industrial temperature grade matches application requirements. Confirm RoHS compliance status through current manufacturer declarations. Check for any recent product change notices affecting pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when a single-pin serial interface is required to minimize PCB trace count. Choose the 11AA series over the 11LC series if operation below 2.5V down to 1.8V is necessary. Consider the 16-byte page buffer for efficient bulk data writes. Verify that the master controller can generate the required Manchester encoded signals for proper communication.

Part Context

This part belongs to the 11AA/11LC family of serial EEPROMs from Microchip Technology. These devices are designed for applications requiring non-volatile memory with simple interface protocols. The family offers various densities ranging from 1 Kbit to 16 Kbit in multiple package options including MSOP, SOIC, and PDIP.

Replacement Considerations

The 11LC010 is a compatible alternative within the same family but requires a minimum supply voltage of 2.5V instead of 1.8V. Other density variants like the 11AA020 offer larger storage capacity with identical interface characteristics. Ensure substitute parts match the required operating voltage and temperature range.