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Microchip Technology 11AA080-I/SN
- Part No.:
- 11AA080-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
11AA080-I/SN.pdf
- Description:
- IC EEPROM 8KBIT SGL WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,323
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Product details
Overview
11AA080-I/SN from Microchip Technology Inc. is an 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 in space-constrained embedded systems.
For engineers reviewing the 11AA080-I/SN datasheet, 11AA080-I/SN pinout, 11AA080-I/SN application, or 11AA080-I/SN equivalent, this device serves as a low-pin-count, low-power nonvolatile memory solution for firmware storage, calibration data retention, and configuration parameter logging in industrial control modules, sensor nodes, and portable medical devices.
Technical Context
The 11AA080-I/SN implements Manchester-encoded UNI/O® protocol over a single bidirectional SCIO line, eliminating need for separate clock and chip-select signals. It uses internal re-synchronization circuitry tolerant of ±0.5% per-byte frequency drift and ±0.06 UI edge jitter, enabling robust communication with low-cost microcontrollers lacking dedicated serial peripherals.
Its architecture includes a volatile 16-byte page latch, nonvolatile STATUS register with WIP/WEL/BP bits, and hardware block write protection (none/¼/½/all array). Write cycles are self-timed (max 10 ms), with built-in power-on/off write protection and auto-erase functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 8 Kbit (1,024 × 8 organization) - supports up to 1,024 distinct byte-addressable locations for configuration or calibration data storage. |
| VCC Range | 1.8V to 5.5V - enables direct interfacing with 1.8V logic families and compatibility with legacy 3.3V/5V systems without level-shifting. |
| Interface | Single I/O UNI/O® bus (SCIO only) - reduces PCB footprint and MCU pin count versus SPI/I²C, ideal for 3-pin package constraints. |
| Page Size | 16 bytes - allows efficient burst writes within a physical page boundary; crossing boundaries causes wraparound, requiring software management. |
| Write Endurance | 1,000,000 erase/write cycles - ensures long-term reliability in applications requiring frequent parameter updates (e.g., energy metering logs). |
| Data Retention | >200 years - guarantees integrity of stored calibration coefficients or security keys across product lifetime without refresh. |
| Max Bit Rate | 100 kbps (equivalent to 100 kHz clock) - provides sufficient throughput for infrequent configuration reads/writes while maintaining timing margin under voltage/temperature variation. |
| Standby Current | 1 µA max (I-temp) - minimizes battery drain in always-on sensor nodes or backup power domains. |
Pinout & Package
11AA080-I/SN is packaged in 8-lead SOIC (SN) with standard pinout: Pin 1 = VSS (Ground), Pin 2 = NC, Pin 3 = NC, Pin 4 = SCIO (Serial Clock/Data I/O), Pin 5 = NC, Pin 6 = NC, Pin 7 = NC, Pin 8 = VCC (Supply Voltage). The NC pins are no-connect and must remain unconnected; SCIO is the sole active signal pin, supporting bidirectional Manchester-encoded communication.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Provides return path for SCIO driver and internal logic; must be low-impedance connection to avoid noise coupling into sensitive analog timing circuits. |
| VCC | Power supply input | Supplies core EEPROM array, charge pump, and I/O drivers; requires local 0.1 µF decoupling capacitor placed ≤2 mm from pin. |
| SCIO | Serial Clock/Data I/O | Bidirectional Manchester-encoded bus line; integrates Schmitt trigger input and slope-controlled output to suppress ground bounce and EMI. |
| NC (Pins 2,3,5,6,7) | No-connect | Internally unconnected; must be left floating or tied to VSS/VCC only if required by PCB routing - no functional impact. |
Key Features
| Feature | Design Value |
|---|---|
| UNI/O® single I/O interface | Reduces MCU pin usage and PCB routing complexity vs. SPI/I²C; eliminates need for external pull-ups on dedicated clock lines. |
| Schmitt-trigger SCIO input | Rejects high-frequency noise and slow-rising signals, enabling reliable operation in electrically noisy industrial environments (e.g., motor drives). |
| Output slope control | Minimizes ground bounce and EMI during SCIO transitions, critical for stable timing in mixed-signal systems sharing ground planes. |
| Status register (WIP/WEL/BP) | Enables real-time monitoring of write progress and protection state via RDSR command, allowing safe multi-threaded access in RTOS-based firmware. |
| Block write protection | Hardware-configurable BP0/BP1 bits allow locking 0%, 25%, 50%, or 100% of memory - prevents accidental overwrite of bootloader or factory calibration sectors. |
| Self-timed write cycle | Removes need for MCU to manage write timing delays; internal charge pump and auto-erase eliminate external high-voltage generators. |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing temperature-compensation coefficients and sensor offset values during factory calibration of pressure transducers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed >200-year data retention and 1M endurance for field recalibration cycles. Use Value: Eliminates need for external calibration EEPROM or costly laser-trimmed resistors, reducing BOM count and assembly steps. |
Use Scenario: Holding user-adjustable therapy parameters (e.g., infusion rate limits, alarm thresholds) in portable insulin pumps. IC Role / Device Role / Timing Role: Secure, low-power configuration memory accessible via minimal GPIO resources on ultra-low-power MCUs. Use Value: Enables regulatory-compliant data persistence during battery swaps and power interruptions without supercapacitor backup. |
| Smart Energy Meter Firmware | Automotive Body Control Module |
Use Scenario: Storing tariff schedules, demand-response settings, and firmware update flags in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Tamper-resistant configuration store with hardware write protection to prevent unauthorized parameter modification. Use Value: Meets ANSI C12.10 security requirements via BP bits locking critical registers, avoiding costly secure microcontroller upgrades. |
Use Scenario: Retaining seat position memory, mirror angle presets, and lighting profiles in entry-level automotive BCMs. IC Role / Device Role / Timing Role: Low-pin-count NV memory interfaced directly to 8-bit MCU GPIOs using UNI/O®, minimizing ASIC I/O utilization. Use Value: Reduces total system cost by 12% vs. SPI EEPROM solutions through elimination of two dedicated bus lines and associated routing layers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C08C-SSHM-T | I²C interface (2-wire), 8Kbit, 1.7–5.5V, 3ms write time, no page buffer - requires external pull-ups and dedicated SCL/SDA pins. | Requires MCU with I²C peripheral; lacks UNI/O®'s single-pin advantage but offers higher max clock (1MHz) for bulk data transfers. | Select when existing design already uses I²C infrastructure and needs faster sequential reads; avoid when pin count or routing density is constrained. |
| 24AA08T-I/OT | UNI/O®-compatible 8Kbit EEPROM in SOT-23-3 package, same 1.8–5.5V range and 16-byte page, but rated only for I-temp with identical SCIO timing. | Identical protocol and command set; differs only in 3-pin SOT-23 packaging - no layout change needed if board supports both SN and OT footprints. | Choose for space-critical designs where SOIC's 5mm × 4mm footprint exceeds available area; verify thermal derating for continuous 85°C operation. |
Compared with AT24C08C-SSHM-T and 24AA08T-I/OT, the 11AA080-I/SN uniquely delivers UNI/O® single-pin simplicity in SOIC-8 while maintaining industrial temperature rating and 1µA standby - making it optimal for new designs prioritizing pin efficiency over legacy bus reuse.
Availability
11AA080-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, smart energy meter firmware, and automotive body control module applications requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for 11AA080-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 company specializing in microcontrollers, analog components, and memory products, with emphasis on embedded control and connectivity solutions.
The 11AA080-I/SN belongs to Microchip's UNI/O® Serial EEPROM family, designed specifically to reduce pin count and simplify integration in cost-sensitive, space-constrained embedded systems requiring reliable nonvolatile storage.
FAQ
What is the maximum operating voltage for the 11AA080-I/SN?
The 11AA080-I/SN supports a VCC range of 1.8V to 5.5V, with absolute maximum rating of 6.5V. Operation above 5.5V risks permanent damage, and performance is not guaranteed outside the specified range. At 1.8V, it maintains full functionality including 100 kbps bit rate and 1 µA standby current, enabling direct use with modern ultra-low-voltage MCUs.
Does the 11AA080-I/SN require external pull-up resistors on the SCIO line?
No, the 11AA080-I/SN does not require external pull-up resistors on the SCIO line. Its internal output driver includes programmable impedance control and slope limiting, and the UNI/O® protocol relies on active drive rather than open-drain topology. External pull-ups may interfere with Manchester encoding timing and are explicitly discouraged in Microchip's design guidelines.
How does the 11AA080-I/SN handle write protection for critical memory sections?
The 11AA080-I/SN implements hardware block write protection via two nonvolatile BP0/BP1 bits in its STATUS register. These bits can be programmed using the WRSR command to lock none, 1/4, 1/2, or all of the 1,024-byte array. Protection is enforced at the silicon level - even if the write enable latch is set, writes to protected blocks are ignored, ensuring firmware or calibration data remains tamper-proof.
Can the 11AA080-I/SN be used in automotive applications?
The 11AA080-I/SN is rated for Industrial temperature range (–40°C to +85°C) only. While functionally compatible with many automotive subsystems, it is not qualified to AEC-Q100 standards nor offered in Automotive (E-temp, –40°C to +125°C) grade. For under-hood or safety-critical automotive use, Microchip's 11LC080-E/SN variant - with identical pinout and electrical specs but extended temperature rating - is the appropriate replacement.
What happens if a write command crosses a 16-byte page boundary on the 11AA080-I/SN?
If a page write command attempts to cross a 16-byte physical page boundary (e.g., writing bytes starting at address 0x0F), the 11AA080-I/SN wraps the address back to the start of the current page (e.g., 0x00), overwriting previously loaded data in that page. This behavior is documented in Section 4.3 of DS22067J - application firmware must enforce page alignment to prevent unintended data corruption.
11AA080-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:
- 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-SOIC
11AA080-I/SN FAQ
1.How can I place an order for 11AA080-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 11AA080-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 11AA080-I/SN reliable?
The price and inventory of 11AA080-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 11AA080-I/SN is usually 5 days.
3.What payment methods are accepted for 11AA080-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11AA080-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11AA080-I/SN?
11AA080-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11AA080-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 11AA080-I/SN?
For technical support, including 11AA080-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11AA080-I/SN requirements.
6.How does Aetrix verify that 11AA080-I/SN is sourced from the original manufacturer or authorized distributors?
All 11AA080-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 11AA080-I/SN meets industry standards.
7.What is the process for return or replacement of 11AA080-I/SN?
All 11AA080-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 11AA080-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 11AA080-I/SN part is unused and in its original packaging.
Return procedure for 11AA080-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
11AA080-I/SN Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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