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Microchip Technology 11AA080-I/MS
- Part No.:
- 11AA080-I/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
11AA080-I/MS.pdf
- Description:
- IC EEPROM 8KBIT SGL WIRE 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,416
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Product details
Overview
11AA080-I/MS from Microchip Technology Inc. is a 8 Kbit (1,024 × 8) serial EEPROM with UNI/O® single I/O bus interface, operating from 1.8V to 5.5V, featuring 16-byte page write buffer, 1 µA max standby current (I-temp), and Schmitt-trigger SCIO input for noise immunity. It is used in space-constrained embedded systems requiring nonvolatile parameter storage with minimal pin count.
For engineers reviewing the 11AA080-I/MS datasheet, 11AA080-I/MS pinout, 11AA080-I/MS application, or 11AA080-I/MS equivalent, key selection factors include its 1.8V low-voltage operation, 100 kbps Manchester-encoded bus timing, industrial temperature range (–40°C to +85°C), MSOP-8 package footprint, and block-level write protection via STATUS register.
Technical Context
The 11AA080-I/MS implements a Manchester-encoded, master-controlled UNI/O® bus using a single bidirectional SCIO line for clock and data multiplexing. Its internal architecture includes a 16-byte page latch, STATUS register with WIP/WEL/BP bits, and current-limited slope-controlled output driver to suppress ground bounce.
It supports dynamic re-synchronization on every MAK bit to tolerate up to ±0.50% frequency drift per byte and ±0.06 UI edge jitter. Write operations are self-timed (max 10 ms), require prior WREN activation, and enforce physical page boundaries (16-byte alignment) to prevent wraparound corruption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 8 Kbit (1,024 × 8 organization) - fixed memory map enabling deterministic addressing without bank switching |
| 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 - eliminates dedicated clock line, reduces PCB routing complexity |
| Page Size | 16 bytes - defines maximum atomic write burst; crossing page boundary wraps address within same physical page |
| Write Endurance | 1,000,000 cycles - ensures long-term reliability in firmware update or calibration logging applications |
| Data Retention | >200 years - guarantees nonvolatile storage integrity across product lifecycle without refresh |
| Temp Range | Industrial: –40°C to +85°C - qualified for use in consumer, industrial control, and automotive cabin electronics |
Pinout & Package
11AA080-I/MS is packaged in an 8-lead MSOP (MS) package with exposed pad (not electrically connected), measuring 3.0 mm × 3.0 mm × 1.0 mm. Pin 1 is marked by a dot or bevelled corner; orientation follows standard MSOP top-down view.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Internally unconnected; must be left floating or tied to VSS per layout guidelines |
| 2 (NC) | No Connect | Internally unconnected; no electrical function; avoid routing signals nearby |
| 3 (NC) | No Connect | Internally unconnected; not bonded; no thermal or electrical role |
| 4 (VSS) | Ground Reference | Primary return path for SCIO and internal circuitry; requires low-impedance connection to system GND plane |
| 5 (VCC) | Supply Voltage | Power input for core and I/O; bypass with 0.1 µF ceramic capacitor placed ≤2 mm from pin |
| 6 (NC) | No Connect | Internally unconnected; no function; do not tie to any voltage |
| 7 (NC) | No Connect | Internally unconnected; no thermal or signal role; leave unpopulated |
| 8 (SCIO) | Serial Clock/Data I/O | Bidirectional Manchester-encoded bus line; integrates clock recovery; requires external pull-up (10 kΩ typical) |
Key Features
| Feature | Design Value |
|---|---|
| UNI/O® Single I/O Interface | Reduces MCU GPIO usage to one pin while maintaining full read/write/erase functionality and status monitoring |
| Schmitt Trigger Input on SCIO | Provides ≥50 mV hysteresis (0.05×VCC) to reject EMI and ensure robust communication in noisy environments |
| Output Slope Control | Actively limits dV/dt on SCIO to suppress ground bounce and meet EMC requirements without external RC networks |
| Block Write Protection | Configurable via STATUS register to protect 0%, 25%, 50%, or 100% of memory array - prevents accidental firmware overwrite |
| Self-Timed Write Cycle | Automatically handles erase-before-write and internal timing; host only waits for WIP=0 via RDSR polling |
Applications
| Smart Sensor Calibration Storage | IoT Device Configuration Memory |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in MEMS accelerometers. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during power-up initialization; reads occur at 100 kHz bus rate with <10 µs setup time. Use Value: Enables plug-and-play sensor replacement without host-side recalibration; leverages 1.8V operation to match low-power sensor supply rails. | Use Scenario: Holding Wi-Fi credentials, OTA update flags, and user preferences in battery-powered BLE modules. IC Role / Device Role / Timing Role: Secure configuration vault updated infrequently; writes protected by BP bits and WREN sequence to prevent corruption during brownout. Use Value: Guarantees data integrity over 200+ years; 1 µA standby current extends coin-cell battery life beyond 10 years. |
| Industrial PLC Parameter Backup | Medical Diagnostic Equipment Settings |
Use Scenario: Retaining PID loop tuning constants and alarm thresholds in programmable logic controllers after power loss. IC Role / Device Role / Timing Role: High-reliability backup memory; withstands 1M write cycles across decades of maintenance updates. Use Value: Eliminates need for supercapacitor-backed SRAM; MSOP-8 footprint fits dense control board layouts. | Use Scenario: Preserving patient-specific measurement profiles and calibration history in portable ultrasound devices. IC Role / Device Role / Timing Role: Safety-critical nonvolatile storage; accessed during boot via verified read sequence with SAK/NoSAK handshaking. Use Value: Meets IEC 62304 Class C software requirements through built-in write-protection and >4 kV ESD immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C08C-MAHM-T | I²C interface (2-wire), 8 Kbit, 1.7V–5.5V, 400 kHz max clock; no built-in page wrap protection | Requires two GPIOs and external pull-ups; lacks Manchester encoding noise immunity | Select when existing I²C infrastructure exists and EMI environment is benign |
| 24AA08T-I/OT | I²C interface, 8 Kbit, 1.8V–5.5V, SOT-23-6 package; lower pin count but no UNI/O® simplicity | Smaller footprint than MSOP-8 but higher bus contention risk without slew-rate control | Choose for ultra-compact designs where single-wire advantage is secondary to size |
Compared with 11AA080-I/MS, AT24C08C-MAHM-T offers broader ecosystem support but demands additional signal lines and noise mitigation design effort; 24AA08T-I/OT saves board area yet forfeits the intrinsic EMI resilience and ground-bounce suppression of the UNI/O® SCIO driver.
Availability
11AA080-I/MS is available at Aetrix Electronics and suitable for industrial control, medical diagnostics, and IoT endpoint applications requiring stable component supply, long-term obsolescence management, and RoHS-compliant packaging.
Supply support for 11AA080-I/MS 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 emphasis on embedded control and reliability.
The 11AA080-I/MS belongs to Microchip's UNI/O® serial EEPROM family, designed specifically for ultra-low-pin-count, noise-immune nonvolatile storage in resource-constrained embedded systems.
FAQ
What is the minimum operating voltage for the 11AA080-I/MS?
The 11AA080-I/MS operates down to 1.8V across its full industrial temperature range (–40°C to +85°C). Below 2.5V, DC characteristics such as VIL are specified at 0.2×VCC, and AC timing parameters remain valid per DS22067J-page 4. This enables direct integration with 1.8V logic families without level-shifting circuitry.
How does the 11AA080-I/MS handle write protection?
The 11AA080-I/MS implements dual-layer write protection: hardware-based via the STATUS register's BP0/BP1 bits (configurable to protect 0%, 25%, 50%, or 100% of memory), and software-enforced via the WREN/WRDI instruction sequence. Both layers must be satisfied before a WRITE or WRSR command executes, preventing accidental overwrites during power transients.
Can the 11AA080-I/MS be used on the same bus as other UNI/O® devices?
Yes - the 11AA080-I/MS uses a hardwired device address of 0xA0 (1010 0000), allowing coexistence with 11AA161-I/MS (0xA1) on the same SCIO bus. Address collision is avoided because the family code '1010' is shared, but the device code differs ('0000' vs '0001'), enabling multi-drop configurations without arbitration overhead.
What is the purpose of the NC pins on the 11AA080-I/MS MSOP package?
The 11AA080-I/MS MSOP package has five NC (no-connect) pins (pins 1, 2, 3, 6, 7) - these are physically present but internally unconnected. They serve mechanical stability and thermal dissipation roles only; no electrical function is assigned. Per Microchip layout guidance, they may be left floating or tied to VSS, but must never be driven or routed to active signals.
How does the 11AA080-I/MS achieve noise immunity on the SCIO line?
The 11AA080-I/MS achieves noise immunity through three integrated features: Schmitt-trigger input with 0.05×VCC hysteresis on SCIO, Manchester encoding that embeds clock recovery within the data stream, and output slope control limiting dV/dt to suppress ground bounce. Together, these eliminate need for external filtering or shielding in typical industrial EMI environments.
11AA080-I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K 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-MSOP
11AA080-I/MS FAQ
1.How can I place an order for 11AA080-I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 11AA080-I/MS 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 11AA080-I/MS reliable?
The price and inventory of 11AA080-I/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 11AA080-I/MS is usually 5 days.
3.What payment methods are accepted for 11AA080-I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11AA080-I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11AA080-I/MS?
11AA080-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11AA080-I/MS 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 11AA080-I/MS?
For technical support, including 11AA080-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11AA080-I/MS requirements.
6.How does Aetrix verify that 11AA080-I/MS is sourced from the original manufacturer or authorized distributors?
All 11AA080-I/MS 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 11AA080-I/MS meets industry standards.
7.What is the process for return or replacement of 11AA080-I/MS?
All 11AA080-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with 11AA080-I/MS, 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 11AA080-I/MS part is unused and in its original packaging.
Return procedure for 11AA080-I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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