11AA161T-I/MNY

Overview

The Microchip Technology 11AA161T-I/MNY is a 16 Kbit (2048 x 8) serial EEPROM utilizing the UNI/O single-wire interface. It operates within a supply voltage range of 1.8V to 5.5V and supports clock frequencies up to 100 kHz. The device features a 16-byte page-write buffer, self-timed write cycles, and block write protection. It offers high reliability with 1,000,000 erase/write cycle endurance and data retention exceeding 200 years. The component is housed in an 8-lead TDFN package and is rated for industrial temperature ranges.

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 hardware-based block write protection allowing configuration to protect none, one-quarter, one-half, or all of the memory array.

Applications

• Interfacing with microcontrollers requiring low-pin-count non-volatile storage
• ASIC applications needing compact serial memory solutions
• Systems requiring robust data retention under varying temperature conditions

Procurement Notes

Verify the specific ordering suffix 'I/MNY' corresponds to the Industrial temperature range (-40°C to +85°C) and the TDFN-8 package type. Confirm that the '1' in the model number indicates the hardwired device address code '0001', which prevents conflicts with '0' devices on the same bus. Ensure compatibility with the master controller's ability to generate the required UNI/O standby pulses and start headers.

Selection Notes

Select this component when a single-wire interface is preferred over multi-wire protocols like I2C or SPI to conserve GPIO pins. Choose the 11AA161 variant specifically if the system requires the unique device address code '0001' to coexist with other family members. Consider the 1.8V minimum operating voltage for low-power battery applications where the 11LC series may not suffice.

Part Context

This part belongs to the 11XX family of Serial Electrically Erasable PROMs, which includes densities from 1 Kbit to 16 Kbit. The family supports both UNI/O and I2C interfaces across various packages. The 11AA161T-I/MNY represents the 16 Kbit density option with the UNI/O interface, packaged in TDFN-8, designed for industrial environments.

Replacement Considerations

The 11AA161T-I/MS serves as a pin-compatible alternative in the MSOP-8 package. For systems requiring the I2C interface instead of UNI/O, the 11LC161T-I/MNY provides equivalent memory density and packaging but operates at a minimum voltage of 2.5V.