11AA160-I/S16K

Overview

The Microchip Technology 11AA160-I/S16K is a 16 Kbit serial EEPROM organized as 2,048 x 8 bits. It utilizes the UNI/O single I/O serial interface and operates within a supply voltage range of 1.8 V to 5.5 V. The device supports a maximum bit rate of 100 kbps and features industrial temperature ratings from -40°C to +85°C. Key electrical characteristics include typical active current of 1 mA and maximum standby current of 1 µA. It offers high reliability with 1,000,000 erase/write cycles endurance 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 block write protection allowing users to protect none, one-quarter, one-half, or all of the memory array.
• Incorporates Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.

Applications

• Interfacing with microcontrollers requiring low-pin-count non-volatile storage
• ASIC applications needing compact serial memory solutions
• Systems utilizing discrete I/O lines configured for UNI/O protocol communication

Procurement Notes

Verify that the ordering suffix S16K corresponds to the specific package configuration required for your design, as the datasheet lists standard packages like PDIP and SOIC. Confirm the Industrial temperature grade (-40°C to +85°C) matches your operational environment. Ensure the 1.8V minimum supply voltage is compatible with your system's power rails, distinguishing it from the 2.5V minimum of the LC series.

Selection Notes

Select this component when a single-wire serial interface is preferred to minimize pin count compared to I2C or SPI devices. Choose the 11AA160 over the 11LC160 if operation below 2.5V is required, as the AA series supports down to 1.8V. Consider the page-write buffer capability if sequential writes are frequent, noting that page boundaries must be respected to prevent data rollover.

Part Context

This part belongs to the 11XX family of 1 Kbit through 16 Kbit Serial Electrically Erasable PROMs. The family supports various organizations from 128 x 8 to 2,048 x 8 bits. The 11AA variant specifically denotes the lower voltage operation range starting at 1.8V, whereas the 11LC variant starts at 2.5V. Both share the same UNI/O interface and physical package options.

Replacement Considerations

The 11LC160-I/SN is a functional substitute within the same family but requires a minimum supply voltage of 2.5V instead of 1.8V. Other 11AA160 variants in different packages (e.g., PDIP, MSOP) may serve as replacements if pin compatibility allows.