Microchip Technology 11AA010-I/S16K

Overview

11AA010-I/S16K from Microchip Technology Inc. is a 1 Kbit (128 × 8) serial EEPROM with UNI/O® single I/O bus interface, operating from 1.8V to 5.5V, featuring 16-byte page write buffer, Schmitt-trigger SCIO input, and 1 µA max standby current at industrial temperature (−40°C to +85°C). It is used in space-constrained embedded systems for parameter storage, calibration data retention, and configuration backup.

For engineers reviewing the 11AA010-I/S16K datasheet, 11AA010-I/S16K pinout, 11AA010-I/S16K application, or 11AA010-I/S16K equivalent, key selection considerations include its 1.8V minimum supply, UNI/O® bus timing tolerance (±0.50% frequency drift per byte), built-in block write protection (0%, 25%, 50%, or 100% array), and compatibility with microcontroller GPIO-based serial interfaces requiring minimal pin count.

Technical Context

The 11AA010-I/S16K implements Manchester-encoded UNI/O® protocol over a single bidirectional SCIO line, eliminating need for separate clock and data lines. Its internal re-synchronization circuitry tracks master clock period during each MAK bit, tolerating ±0.06 UI input edge jitter and ±5% cumulative frequency deviation per command.

It integrates a nonvolatile STATUS register with Write-In-Progress (WIP) and Write-Enable Latch (WEL) bits, plus BP0/BP1 for hardware-configurable block protection. The device uses on-chip high-voltage generation for EEPROM programming and includes slope-controlled output drivers to suppress ground bounce.

Key Specifications

Pinout & Package

11AA010-I/S16K is packaged in an 8-pin SOIC (SO-008) with gull-wing leads, 1.27 mm pitch, and JEDEC MS-012AC footprint. Pin 1 is marked by a beveled corner or dot; package meets RoHS and Pb-free requirements.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Compared with 11LC010-I/SN, the 11AA010-I/S16K enables direct 1.8V integration and lower system-level component count; versus AT24C01D-SSHM-T, it trades bandwidth for pin efficiency and noise-immune single-wire operation in space- and pin-constrained designs.

Availability

11AA010-I/S16K is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and medical device configuration storage requiring stable component supply across extended production lifecycles.

Supply support for 11AA010-I/S16K includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and memory products, with focus on embedded control and connectivity solutions.

The 11AA010-I/S16K belongs to Microchip's UNI/O® serial EEPROM family, designed specifically for ultra-low-pin-count systems where minimizing MCU I/O usage and board space is critical - especially in cost-sensitive, high-volume consumer and industrial applications.

FAQ

What is the UNI/O® interface used by the 11AA010-I/S16K?

The 11AA010-I/S16K uses Microchip's patented UNI/O® bus, a single-wire, Manchester-encoded serial interface that combines clock and data into one bidirectional signal (SCIO). This eliminates separate clock lines and reduces MCU pin count versus SPI or I²C. The 11AA010-I/S16K implements full protocol compliance including start header synchronization, MAK/NoMAK handshaking, and re-synchronization to tolerate bus timing variations.

Does the 11AA010-I/S16K support 1.8V operation?

Yes, the 11AA010-I/S16K supports a VCC range of 1.8V to 5.5V, making it compatible with modern low-voltage microcontrollers and battery-powered systems. This is a key differentiator from the pin-compatible 11LC010, which requires minimum 2.5V. At 1.8V, the 11AA010-I/S16K maintains full functionality including 100 kbps bus rate, page writes, and STATUS register access.

How does the 11AA010-I/S16K handle write protection?

The 11AA010-I/S16K provides dual-layer write protection: hardware block protection via BP0/BP1 bits in the STATUS register (configurable for 0%, 25%, 50%, or 100% array lock), and built-in power-on/off circuitry that disables writes during supply transitions. The write enable latch (WEL) must be set via WREN command before any write - and is automatically cleared after successful WRITE, WRSR, ERAL, or SETAL operations.

What is the maximum write speed and page size of the 11AA010-I/S16K?

The 11AA010-I/S16K supports up to 100 kbps serial bus frequency (equivalent to 100 kHz clock), with typical byte write time under 5 ms and page write time under 10 ms. Its page buffer holds up to 16 bytes, aligned to physical boundaries (e.g., addresses 0x00–0x0F). Crossing page boundaries causes wraparound - software must validate address ranges before initiating multi-byte writes.

Can the 11AA010-I/S16K be used in automotive applications?

The 11AA010-I/S16K is rated for Industrial temperature (−40°C to +85°C) and is not qualified for Automotive (AEC-Q100 Grade 2 or 3) use. For automotive body electronics requiring −40°C to +125°C operation, Microchip's 11LC010-I/SN or 11LC010-E/SN are drop-in alternatives with identical UNI/O® functionality and extended temperature range - though they lack 1.8V support.