11AA160T-I/CS16K

Overview

The Microchip Technology 11AA160T-I/CS16K is a 16 Kbit serial EEPROM utilizing the UNI/O single-wire interface. It features a 2,048 x 8 bit organization with a 16-byte page write buffer. The device operates within a voltage range of 1.8V to 5.5V and supports industrial temperature ranges from -40°C to +85°C. Key electrical characteristics include a maximum bus frequency of 100 kHz, typical active current of 1 mA, and standby current of 1 µA. It offers high reliability with 1,000,000 erase/write cycles and data retention exceeding 200 years.

Feature Summary

• Supports the patented UNI/O single I/O serial bus protocol using Manchester encoding for combined clock and data transmission.
• Includes built-in write protection mechanisms such as power-on/off data protection circuitry and a configurable write enable latch.
• Features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Provides block write protection allowing configuration to protect none, 1/4, 1/2, or all of the memory array.

Applications

• Interfacing with microcontrollers requiring low-pin-count memory solutions
• Storage of calibration data in industrial instrumentation
• Configuration parameter storage in embedded systems
• Data logging applications in consumer electronics

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the device address code corresponds to the intended bus topology. Ensure supply chain sources provide genuine Microchip products with appropriate traceability documentation. Check for RoHS compliance status if required by target assembly processes.

Selection Notes

Select this component when a single-wire interface is necessary to minimize pin count on the host controller. Choose the 11AA series over the 11LC series if operation below 2.5V is required, as it supports voltages down to 1.8V. Consider the page write buffer size for applications requiring efficient bulk data transfers without excessive command overhead.

Part Context

This part belongs to the 11XX family of serial EEPROMs, which includes densities ranging from 1 Kbit to 16 Kbit. The family shares common architectural features such as the UNI/O interface and similar command sets. Variants within the family differ primarily in density, voltage range (1.8V vs 2.5V minimum), and device addressing codes.

Replacement Considerations

Direct substitutes within the same family include the 11AA160 in different packages. For single-wire compatibility, the 11LC160 may be considered if the system voltage remains above 2.5V. Verify that any replacement maintains the same device address code to prevent bus conflicts.