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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology 11AA010-I/TO

Name: 11AA010-I/TO
Brand: Microchip Technology
SKU: 11AA010-I/TO
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 11AA010-I/TO

Manufacturer:: Microchip Technology

Category:: Memory

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: 11AA010-I/TO.pdf

Description:: IC EEPROM 1KBIT SGL WIRE TO92-3

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Inventory:17,296

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Product details

Overview

11AA010-I/TO 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 firmware configuration.

For engineers reviewing the 11AA010-I/TO datasheet, 11AA010-I/TO pinout, 11AA010-I/TO application, or 11AA010-I/TO equivalent, key selection criteria include its 3-lead TO-92 package, 100 kbps Manchester-encoded serial interface, 1,000,000 erase/write endurance, >200-year data retention, and block-level write protection covering none, 1/4, 1/2, or all memory array.

Technical Context

The 11AA010-I/TO implements Manchester-encoded UNI/O® protocol over a single bidirectional SCIO line, eliminating need for separate clock and data lines. Its internal timing recovery circuitry synchronizes to master-generated bit periods and tolerates ±0.50% frequency drift per byte and ±0.06 UI edge jitter.

It integrates a status register with Write-In-Progress (WIP) and Write-Enable Latch (WEL) bits, plus nonvolatile BP0/BP1 bits for hardware-configurable block protection. All operations - read, write, status access, and bulk erase - are initiated via 8-bit command codes (e.g., 0x03 for READ, 0x6C for WRITE) transmitted MSb-first after a standardized start header.

Key Specifications

Parameter	Value and Actual Design Meaning
Density	1 Kbit (128 × 8 organization), sufficient for small configuration tables or device ID storage
VCC Range	1.8V to 5.5V - supports direct interfacing with 1.8V logic and legacy 5V microcontrollers
Interface	Single I/O UNI/O® bus with Manchester encoding - reduces PCB routing to one signal plus power/ground
Write Speed	Page-write buffer up to 16 bytes; typical write cycle time ≤5 ms per byte/page
Endurance	1,000,000 erase/write cycles - suitable for frequent field-updatable parameters
Data Retention	>200 years at +85°C - ensures long-term reliability in unattended industrial deployments
ESD Protection	>4,000 V HBM - robust against handling and system-level ESD events

Pinout & Package

11AA010-I/TO is housed in a 3-lead TO-92 through-hole package (top-down view: Pin 1 = VCC, Pin 2 = VSS, Pin 3 = SCIO).

Pin/Terminal	Circuit Role	Design Meaning
SCIO	Serial Clock/Data I/O	Bidirectional Manchester-encoded signal carrying clock and data; includes Schmitt trigger and slope control
VSS	Ground Reference	Return path for all internal circuitry and SCIO driver; must be low-impedance for noise immunity
VCC	Supply Voltage	Power input for EEPROM core and interface logic; supports 1.8–5.5V operation without external regulators

Key Features

Feature	Design Value
UNI/O® Single I/O Interface	Reduces board space and routing complexity versus SPI/I²C; eliminates clock skew and synchronization overhead
16-Byte Page Write Buffer	Enables burst writes without host intervention between bytes, improving update efficiency in real-time systems
Status Register Access	Allows polling of WIP bit during write cycles and monitoring of WEL/BP bits without halting host operation
Hardware Block Write Protection	BP0/BP1 bits configure protection of 0%, 25%, 50%, or 100% of memory - prevents accidental overwrite of critical firmware sections
Low-Power Operation	1 µA max standby current enables use in battery-backed or energy-harvesting applications with multi-year runtime

Applications

Smart Sensor Calibration Storage	Industrial PLC Configuration Memory
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in MEMS pressure sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during power-up and periodic self-test; no timing-critical latency requirements. Use Value: Eliminates need for external voltage reference or precision ADC calibration in host MCU; retains values across 10+ year product lifecycle.	Use Scenario: Holding user-defined I/O mapping, alarm thresholds, and communication settings in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Configuration EEPROM interfaced to ARM Cortex-M host via GPIO bit-banged UNI/O®; accessed during boot and runtime reconfiguration. Use Value: Enables field updates without firmware reflashing; hardware write protection prevents corruption during brown-out or EMI events.
Medical Device Usage Log	Automotive Body Control Module Settings
Use Scenario: Recording cumulative operational hours, sterilization cycles, and error event timestamps in portable diagnostic equipment. IC Role / Device Role / Timing Role: Event-logging memory updated asynchronously by interrupt-driven firmware; requires high endurance and data integrity. Use Value: 1M-cycle endurance supports daily logging over 2,700+ days; >200-year retention meets FDA traceability requirements.	Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in automotive interior modules. IC Role / Device Role / Timing Role: Low-voltage (1.8V) EEPROM integrated into 12V vehicle power domain via local LDO; accessed during ignition-on initialization. Use Value: 1.8V minimum VCC allows direct connection to 1.8V MCU I/O; TO-92 package fits tight mechanical envelopes behind trim panels.

Smart Sensor Calibration Storage

Industrial PLC Configuration Memory

Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in MEMS pressure sensors.

IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during power-up and periodic self-test; no timing-critical latency requirements.

Use Value: Eliminates need for external voltage reference or precision ADC calibration in host MCU; retains values across 10+ year product lifecycle.

Use Scenario: Holding user-defined I/O mapping, alarm thresholds, and communication settings in DIN-rail mounted programmable logic controllers.

IC Role / Device Role / Timing Role: Configuration EEPROM interfaced to ARM Cortex-M host via GPIO bit-banged UNI/O®; accessed during boot and runtime reconfiguration.

Use Value: Enables field updates without firmware reflashing; hardware write protection prevents corruption during brown-out or EMI events.

Medical Device Usage Log

Automotive Body Control Module Settings

Use Scenario: Recording cumulative operational hours, sterilization cycles, and error event timestamps in portable diagnostic equipment.

IC Role / Device Role / Timing Role: Event-logging memory updated asynchronously by interrupt-driven firmware; requires high endurance and data integrity.

Use Value: 1M-cycle endurance supports daily logging over 2,700+ days; >200-year retention meets FDA traceability requirements.

Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in automotive interior modules.

IC Role / Device Role / Timing Role: Low-voltage (1.8V) EEPROM integrated into 12V vehicle power domain via local LDO; accessed during ignition-on initialization.

Use Value: 1.8V minimum VCC allows direct connection to 1.8V MCU I/O; TO-92 package fits tight mechanical envelopes behind trim panels.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
11LC010-I/TO	Same 1 Kbit density and TO-92 package, but 2.5–5.5V VCC range - lacks 1.8V support	Not suitable for 1.8V-only systems; requires level-shifting or higher supply rail	Select when system VCC ≥2.5V and cost sensitivity outweighs low-voltage flexibility
AT24C01C-SSHM-T	I²C interface (2-wire), 1 Kbit, SOIC-8 package, 1.7–5.5V; no UNI/O® or page buffer	Requires two dedicated I/O pins and pull-up resistors; slower random-write performance	Choose when existing I²C infrastructure exists and board area permits SOIC-8 footprint

Compared with 11LC010-I/TO, the 11AA010-I/TO enables true 1.8V operation and lower standby current; compared with AT24C01C-SSHM-T, it saves two I/O pins and simplifies layout but requires UNI/O®-capable firmware stack.

Availability

11AA010-I/TO is available at Aetrix Electronics and suitable for smart sensor calibration storage, industrial PLC configuration memory, medical device usage log, and automotive body control module settings requiring stable component supply and long-term obsolescence management.

Supply support for 11AA010-I/TO 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 company specializing in microcontrollers, analog devices, and memory products for industrial, automotive, and consumer applications.

The 11AA010-I/TO belongs to Microchip's UNI/O® serial EEPROM family, designed specifically for ultra-low-pin-count, low-power embedded systems where board space, I/O count, and energy efficiency are critical constraints.

FAQ

What is the maximum operating frequency of the 11AA010-I/TO UNI/O® bus?

The 11AA010-I/TO supports a maximum serial bus frequency of 100 kHz, corresponding to a minimum bit period of 10 µs. This limit applies across its full 1.8–5.5V VCC range and −40°C to +85°C temperature range, as verified in DS22067J AC Characteristics Table 1-2.

Does the 11AA010-I/TO require an external clock source?

No, the 11AA010-I/TO does not require an external clock. Its UNI/O® interface uses Manchester encoding on the SCIO line, allowing the slave device to recover clock timing directly from the data stream. The master controls all timing, and the 11AA010-I/TO internally synchronizes to each start header.

How is write protection implemented on the 11AA010-I/TO?

Write protection on the 11AA010-I/TO is controlled by two nonvolatile BP0 and BP1 bits in the STATUS register, set via the WRSR command. These bits configure protection of 0%, 25%, 50%, or 100% of the memory array - independent of software control and retained through power cycles.

What is the purpose of the SCIO pin's slope control feature?

The SCIO pin's output slope control on the 11AA010-I/TO limits edge transition rate to suppress ground bounce and reduce EMI. This design feature ensures reliable signaling in noisy industrial environments and eliminates need for external series resistors in most layouts.

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

The 11AA010-I/TO is rated for Industrial temperature range (−40°C to +85°C) only. For automotive applications requiring −40°C to +125°C operation, Microchip offers the pin-compatible 11LC010-E/TO variant - which shares identical functionality but uses a 2.5–5.5V VCC range and automotive qualification.

11AA010-I/TO Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA)

Packaging:: Bag

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: EEPROM

Technology:: EEPROM

Memory Size:: 1Kbit

Memory Organization:: 128 x 8

Memory Interface:: Single Wire

Clock Frequency:: 100 kHz

Write Cycle Time - Word, Page:: 5ms

Access Time:: -

Voltage - Supply:: 1.8V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

11AA010-I/TO FAQ

1.How can I place an order for 11AA010-I/TO through Aetrix?

Please submit a Request for Quotation (RFQ) for 11AA010-I/TO on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 11AA010-I/TO reliable?

The price and inventory of 11AA010-I/TO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 11AA010-I/TO is usually 5 days.

3.What payment methods are accepted for 11AA010-I/TO?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11AA010-I/TO transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 11AA010-I/TO?

11AA010-I/TO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 11AA010-I/TO order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 11AA010-I/TO?

For technical support, including 11AA010-I/TO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11AA010-I/TO requirements.

6.How does Aetrix verify that 11AA010-I/TO is sourced from the original manufacturer or authorized distributors?

All 11AA010-I/TO products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 11AA010-I/TO meets industry standards.

7.What is the process for return or replacement of 11AA010-I/TO?

All 11AA010-I/TO units undergo pre-shipment inspection (PSI). If there is an issue with 11AA010-I/TO, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 11AA010-I/TO part is unused and in its original packaging.

Return procedure for 11AA010-I/TO:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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