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Microchip Technology 11AA02E48-I/SN
- Part No.:
- 11AA02E48-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
11AA02E48-I/SN.pdf
- Description:
- IC EEPROM 2KBIT SGL WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,284
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Product details
Overview
11AA02E48-I/SN from Microchip Technology Inc. is a 2 Kbit serial EEPROM with preprogrammed EUI-48™ node address, UNI/O® single-I/O bus interface, 256 × 8-bit memory organization, 1.8–5.5 V supply range, and industrial temperature rating (−40°C to +85°C). It serves as a secure identity and configuration storage device in networked embedded systems requiring globally unique addressing.
For engineers reviewing the 11AA02E48-I/SN datasheet, 11AA02E48-I/SN pinout, 11AA02E48-I/SN application, or 11AA02E48-I/SN equivalent, key selection considerations include its single-pin UNI/O® interface timing compliance, EUI-48™ factory-programmed identity, page-write buffer support, Schmitt-trigger noise immunity, and block-level write protection for secure firmware or MAC address storage.
Technical Context
The 11AA02E48-I/SN implements Manchester-encoded UNI/O® protocol over a single SCIO line, eliminating need for separate clock lines and reducing PCB routing complexity. Its internal re-synchronization circuitry tolerates ±0.50% bus frequency drift per byte and ±5% total drift per command, enabling robust operation across voltage/temperature variations.
It features a dedicated STATUS register with WIP and WEL bits for real-time write-state monitoring, plus BP0/BP1 bits enabling nonvolatile 0%, 25%, 50%, or 100% array write protection. The 16-byte page buffer supports efficient burst writes without host-side timing constraints, while self-timed erase/write cycles eliminate external delay management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 2 Kbit (256 × 8-bit organization) - fixed memory size supporting small configuration or identity data storage |
| Interface | UNI/O® single I/O bus with Manchester encoding - eliminates dedicated clock line, reduces pin count and routing overhead |
| Node Address | EUI-48™ (48-bit) - factory-programmed, globally unique identifier compliant with IEEE 802 standards for network device identity |
| Supply Range | 1.8 V to 5.5 V - enables direct interfacing with 1.8 V, 3.3 V, and 5 V microcontrollers without level shifters |
| Write Endurance | 1,000,000 erase/write cycles - supports frequent field-updatable parameters in industrial control or IoT edge nodes |
| Data Retention | >200 years - ensures long-term reliability of stored MAC addresses or calibration data without refresh |
| Max Bit Rate | 100 kbps (equivalent to 100 kHz clock) - defines maximum communication speed for deterministic timing budgeting |
| Standby Current | 1 µA max at 85°C - enables ultra-low-power operation in battery-backed or energy-harvesting applications |
Pinout & Package
11AA02E48-I/SN is packaged in an 8-lead SOIC (SN) with standard footprint and lead spacing. Pin functions are validated per Microchip DS20002122E.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Accepts 1.8–5.5 V; powers internal HV generator and logic; requires local decoupling capacitor |
| VSS | Ground reference | Return path for all internal currents; must be low-impedance connection to system ground plane |
| SCIO | Serial Clock/Data I/O | Single bidirectional line carrying Manchester-encoded clock+data; includes Schmitt trigger and slope control |
Key Features
| Feature | Design Value |
|---|---|
| Preprogrammed EUI-48™ address | Factory-assigned, IEEE-compliant 48-bit node ID eliminates software-based MAC generation and collision risk |
| UNI/O® single-I/O interface | Reduces MCU GPIO usage to one pin and removes clock line routing, simplifying layout in space-constrained designs |
| Page-write buffer (16 bytes) | Enables burst writes within a 16-byte physical page boundary, minimizing host CPU intervention and bus occupancy |
| Status register with WIP/WEL bits | Allows polling of write-in-progress state and write-enable status without halting other operations or issuing full commands |
| Block write protection (BP0/BP1) | Configurable hardware lock for 0%, 25%, 50%, or 100% of memory - prevents accidental or malicious overwrite of critical identity data |
| Schmitt-trigger SCIO input | Provides 50 mV typical hysteresis (0.05×VCC) to reject noise on shared or long trace buses in electrically noisy environments |
Applications
| Industrial Network Node Identity | Secure Boot Configuration Storage |
|---|---|
|
Use Scenario: Assigning unique MAC addresses to Ethernet-enabled PLCs, gateways, or field sensors deployed across factory networks. IC Role / Device Role / Timing Role: Factory-programmed EUI-48™ source for IEEE 802-compliant link-layer addressing; accessed during boot via UNI/O® before main processor initialization. Use Value: Eliminates software-based MAC generation and duplicate-address conflicts; ensures regulatory compliance and plug-and-play interoperability. |
Use Scenario: Storing cryptographic keys, bootloader flags, and secure boot policy settings in medical or industrial controllers requiring tamper-resistant configuration. IC Role / Device Role / Timing Role: Nonvolatile, block-protected storage for immutable boot parameters; accessed early in power-on sequence using low-pin-count UNI/O® interface. Use Value: Hardware-enforced write protection prevents runtime corruption; 1 µA standby current preserves battery life in always-on safety-critical systems. |
| IoT Edge Device Calibration Data | Smart Meter Firmware Version Tracking |
|
Use Scenario: Retaining sensor calibration coefficients, offset/gain values, and environmental compensation tables in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Low-power persistent storage updated infrequently during field calibration; accessed via UNI/O® during sensor initialization or periodic self-test. Use Value: >200-year data retention ensures accuracy over product lifetime; 1.8 V operation allows direct integration with ultra-low-voltage sensor front-ends. |
Use Scenario: Logging firmware revision IDs, update timestamps, and patch validation hashes in utility smart meters subject to long deployment cycles and remote OTA updates. IC Role / Device Role / Timing Role: Tamper-evident version registry with write-protection enabled for production units; read during boot and post-update verification. Use Value: 1M endurance supports decades of field updates; ESD protection (>4 kV) ensures reliability in high-voltage metering environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM with unique node identity applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 11AA02E64-I/SN | EUI-64™ (64-bit) node address instead of EUI-48™; identical pinout, timing, and memory architecture | Required where IEEE 802.15.4, IPv6 autoconfiguration, or extended device identity is mandated | Select when 64-bit uniqueness or IPv6 interface ID generation is needed; otherwise 11AA02E48-I/SN provides optimal fit for Ethernet/MAC use cases |
| AT24C02C-SSHM-T | I²C interface (2-wire), no factory-programmed EUI; 2 Kbit density, 1.7–5.5 V, SOIC-8 package | Lacks built-in node identity; requires software-managed MAC assignment and external protection logic | Choose only if I²C infrastructure already exists and EUI-48™ is not required; adds design complexity for secure identity management |
Compared with 11AA02E64-I/SN and AT24C02C-SSHM-T, the 11AA02E48-I/SN delivers verified EUI-48™ identity with zero software overhead, single-pin UNI/O® simplicity, and hardware-enforced write protection-making it the most direct solution for Ethernet-connected embedded devices needing guaranteed MAC uniqueness and minimal GPIO usage.
Availability
11AA02E48-I/SN is available at Aetrix Electronics and suitable for industrial networking, secure boot, IoT sensor calibration, and smart metering applications requiring stable component supply, long-lifecycle support, and guaranteed factory-programmed identity.
Supply support for 11AA02E48-I/SN 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 solutions for industrial, automotive, and communications markets.
The 11AA02E48-I/SN belongs to Microchip's UNI/O® serial EEPROM family, designed specifically to simplify secure device identity and configuration storage in resource-constrained embedded systems using minimal GPIO resources.
FAQ
What is the factory-programmed identity format for the 11AA02E48-I/SN?
The 11AA02E48-I/SN contains a preprogrammed, globally unique 48-bit EUI-48™ node address compliant with IEEE 802 standards. This address is permanently written at wafer test and cannot be modified. It is accessed as read-only data during UNI/O® READ or CRRD commands and serves as a hardware-rooted MAC address source for networked devices.
Does the 11AA02E48-I/SN require external components for reliable UNI/O® communication?
The 11AA02E48-I/SN requires only a 0.1 µF ceramic decoupling capacitor between VCC and VSS, placed near the SOIC package. No pull-up resistors, level shifters, or timing components are needed-the SCIO pin integrates Schmitt-trigger inputs, output slope control, and Manchester decoding, enabling direct connection to compatible MCU GPIOs.
How does the 11AA02E48-I/SN handle write protection for critical identity data?
The 11AA02E48-I/SN implements hardware-based block write protection via two nonvolatile BP0/BP1 bits in its STATUS register. These bits can be set using the WRSR command to protect 0%, 25%, 50%, or 100% of the 256-byte array. Once configured, protected blocks remain immune to WRITE or ERAL commands-even if the write enable latch is active-ensuring EUI-48™ and configuration data integrity.
What is the maximum write speed and endurance specification for the 11AA02E48-I/SN?
The 11AA02E48-I/SN supports up to 100 kbps UNI/O® bit rate, with typical write cycle time of 5 ms per byte or page. It guarantees 1,000,000 erase/write cycles per memory location and >200 years of data retention at 85°C. Endurance is specified at 25°C and 5.5 V but remains valid across the full industrial temperature and voltage range per Microchip DS20002122E.
Can the 11AA02E48-I/SN operate from a 1.8 V supply, and what are the current implications?
Yes, the 11AA02E48-I/SN operates from 1.8 V to 5.5 V. At 1.8 V, active read current is ≤1 mA and standby current is ≤1 µA (max at 85°C). This enables direct integration with 1.8 V microcontrollers and ultra-low-power applications such as battery-operated sensors, where minimizing quiescent current is critical to extending operational lifetime.
11AA02E48-I/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 2Kbit
- Memory Organization:
- 256 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
11AA02E48-I/SN FAQ
1.How can I place an order for 11AA02E48-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 11AA02E48-I/SN 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 11AA02E48-I/SN reliable?
The price and inventory of 11AA02E48-I/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 11AA02E48-I/SN is usually 5 days.
3.What payment methods are accepted for 11AA02E48-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11AA02E48-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11AA02E48-I/SN?
11AA02E48-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11AA02E48-I/SN 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 11AA02E48-I/SN?
For technical support, including 11AA02E48-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11AA02E48-I/SN requirements.
6.How does Aetrix verify that 11AA02E48-I/SN is sourced from the original manufacturer or authorized distributors?
All 11AA02E48-I/SN 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 11AA02E48-I/SN meets industry standards.
7.What is the process for return or replacement of 11AA02E48-I/SN?
All 11AA02E48-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 11AA02E48-I/SN, 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 11AA02E48-I/SN part is unused and in its original packaging.
Return procedure for 11AA02E48-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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