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Microchip Technology 11AA080T-I/SN
- Part No.:
- 11AA080T-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
11AA080T-I/SN.pdf
- Description:
- IC EEPROM 8KBIT SGL WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,812
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Product details
Overview
11AA080T-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 11AA080T-I/SN datasheet, 11AA080T-I/SN pinout, 11AA080T-I/SN application, or 11AA080T-I/SN equivalent, key selection considerations include its 1.8V low-voltage operation, Manchester-encoded UNI/O timing tolerance (±0.5% frequency drift per byte), built-in block write protection (0/¼/½/all array), and SOT-23-3 package compatibility with high-density PCB layouts.
Technical Context
The 11AA080T-I/SN implements a Manchester-encoded, master-controlled UNI/O® bus protocol using a single bidirectional SCIO line for clock and data multiplexing. Its internal re-synchronization circuitry tracks master bit period (10–100 µs) and tolerates ±0.06 UI input edge jitter and ±0.5% per-byte frequency drift.
It integrates a status register with WIP and WEL flags, hardware write-enable latch, and nonvolatile BP0/BP1 bits for configurable block protection. The device uses on-chip HV generator for EEPROM programming and features slope-controlled SCIO output to suppress ground bounce during transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 8 Kbit (1,024 × 8 organization) - supports firmware parameter storage or calibration data tables in resource-limited microcontroller systems. |
| VCC Range | 1.8V to 5.5V - enables direct interfacing with 1.8V logic families and legacy 3.3V/5V systems without level shifters. |
| Interface | Single I/O UNI/O® bus - reduces PCB routing complexity and pin count vs. I²C/SPI, ideal for 3-pin constrained designs. |
| Page Size | 16 bytes - allows efficient burst writes up to full page without intermediate command overhead. |
| Write Endurance | 1,000,000 erase/write cycles - supports frequent field-updatable configuration storage in industrial control nodes. |
| Data Retention | >200 years at 85°C - ensures long-term reliability for sealed or inaccessible deployments like smart meters. |
| Temp Range | Industrial: –40°C to +85°C - qualified for use in automotive body electronics, HVAC controllers, and factory automation modules. |
Pinout & Package
11AA080T-I/SN is housed in a 3-lead SOT-23 package (SN suffix), with SCIO serving as bidirectional serial clock/data line, VCC as supply input, and VSS as ground reference. No NC pins are present in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SCIO) | Serial Clock/Data I/O | Manchester-encoded bidirectional bus line - requires no external pull-up; internal slope control prevents ground bounce during drive transitions. |
| 2 (VSS) | Ground Reference | Return path for all internal circuitry - must be connected directly to system ground plane to maintain noise immunity of Schmitt-trigger inputs. |
| 3 (VCC) | Supply Voltage | Power input for EEPROM core and interface logic - decoupling capacitor (0.1 µF) required within 5 mm for stable 1.8V operation. |
Key Features
| Feature | Design Value |
|---|---|
| UNI/O® Single I/O Interface | Eliminates dedicated clock line and reduces interconnect to one signal - cuts routing layers and saves board area in ultra-compact modules. |
| Schmitt Trigger SCIO Input | Provides 0.05×VCC hysteresis - rejects EMI-induced glitches on shared PCB traces in noisy motor-drive or power-conversion environments. |
| Self-Timed Write Cycle | Automatically handles erase-and-program sequence - removes need for external timeout management in host firmware. |
| Status Register Access | Enables real-time polling of WIP and WEL bits via RDSR command - allows deterministic write completion detection without fixed delays. |
| Block Write Protection | Configurable via BP0/BP1 bits to lock 0%, 25%, 50%, or 100% of memory - prevents accidental overwrites of critical bootloader or security keys. |
Applications
| Smart Sensor Calibration | IoT Edge Node Configuration |
|---|---|
Use Scenario: Storing temperature-compensation coefficients and sensor offset values during factory calibration of MEMS pressure sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed only at power-on or recalibration events; UNI/O® timing tolerance accommodates variable MCU GPIO toggle rates. Use Value: Eliminates need for external I²C pull-ups and reduces BOM count by one passive component while maintaining >200-year data retention. | Use Scenario: Holding Wi-Fi credentials, OTA update metadata, and user preferences in battery-powered BLE mesh nodes. IC Role / Device Role / Timing Role: Low-power configuration store - 1 µA standby current extends coin-cell life; 1.8V operation matches nRF52840's IO voltage. Use Value: Enables secure credential storage with hardware write-protection (BP bits) to prevent runtime corruption during wireless firmware updates. |
| Industrial HMI Button Mapping | Medical Device Usage Logs |
Use Scenario: Recording custom button label assignments and backlight brightness profiles in touchless panel interfaces for cleanroom equipment. IC Role / Device Role / Timing Role: Infrequent-write EEPROM interfaced via GPIO bit-banging - UNI/O® Manchester encoding eliminates clock skew concerns across long flex-cable runs. Use Value: Supports 1M endurance cycles for daily reconfiguration over 10+ years; SOT-23-3 footprint fits behind 12mm tactile switches. | Use Scenario: Logging sterilization cycle counts and operator IDs in portable ultrasound probes subject to repeated autoclaving. IC Role / Device Role / Timing Role: Tamper-resistant event logger - BP bits lock first 256 bytes containing audit trail headers; STATUS register confirms write completion before power removal. Use Value: Meets IEC 62304 Class C software requirements via guaranteed write-cycle integrity and >200-year retention at elevated storage temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C08D-SSHM-T | I²C interface, 8Kbit, 1.7–5.5V, 8-lead SOIC - requires two I/O lines and external pull-ups. | Higher pin count and board area; incompatible with UNI/O®-only host firmware stacks. | Select when existing design already uses I²C infrastructure and layout cannot accommodate SOT-23-3 footprint. |
| 11LC080T-I/SN | Same density and package, but 2.5–5.5V VCC range - lacks 1.8V support and has higher 5 µA standby current. | Not suitable for 1.8V-only systems; requires level-shifting if interfaced with sub-2.5V MCUs. | Choose only if 1.8V operation is unnecessary and cost sensitivity favors Microchip's LC-series pricing tier. |
Compared with AT24C08D-SSHM-T and 11LC080T-I/SN, the 11AA080T-I/SN uniquely delivers 1.8V compatibility, single-pin UNI/O® simplicity, and lowest standby current in its family - making it optimal for energy-harvesting sensors and miniaturized medical wearables where pin count and voltage headroom are critical constraints.
Availability
11AA080T-I/SN is available at Aetrix Electronics and suitable for industrial HMI systems, IoT edge nodes, smart sensor calibration, and medical device usage logging requiring stable component supply across extended product lifecycles.
Supply support for 11AA080T-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 devices, and memory solutions for embedded control applications.
The 11AA080T-I/SN belongs to Microchip's UNI/O® Serial EEPROM family, designed specifically to reduce pin count and simplify firmware integration in cost-sensitive, space-constrained embedded systems requiring reliable nonvolatile storage.
FAQ
What is the minimum VCC voltage supported by the 11AA080T-I/SN?
The 11AA080T-I/SN operates down to 1.8V across its full industrial temperature range (–40°C to +85°C). Below 2.5V, DC specifications such as input thresholds (VIL ≤ 0.2×VCC) and standby current (≤1 µA) are guaranteed per DS22067J-page 3. This enables direct connection to 1.8V microcontrollers without level translation.
How does the 11AA080T-I/SN handle bus synchronization during communication?
The 11AA080T-I/SN uses Manchester-encoded start headers to lock onto the master's bit period (10–100 µs), then continuously re-synchronizes on every MAK bit edge. It tolerates ±0.06 UI input jitter and ±0.5% frequency drift per byte - allowing robust operation even with software-bit-banged UNI/O® implementations on resource-limited MCUs.
Can the 11AA080T-I/SN be used in place of an I²C EEPROM without hardware changes?
No - the 11AA080T-I/SN uses a proprietary UNI/O® single-wire protocol incompatible with I²C addressing, ACK/NACK signaling, or clock stretching. Replacing an I²C EEPROM requires firmware rewrite to implement UNI/O® timing and command structure; no pin-compatible drop-in substitution is possible.
What write protection options are available on the 11AA080T-I/SN?
The 11AA080T-I/SN provides hardware-configurable block write protection via BP0/BP1 bits in its STATUS register. These nonvolatile bits allow locking 0%, 25%, 50%, or 100% of the 8Kbit array - protecting critical firmware parameters or calibration data from accidental overwrite during field updates or debug sessions.
Is the 11AA080T-I/SN RoHS compliant and lead-free?
Yes - the 11AA080T-I/SN is Pb-free and RoHS compliant per Microchip's DS22067J documentation. The "SN" package suffix denotes lead-free, halogen-free SOT-23 construction, meeting JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements for standard surface-mount assembly.
11AA080T-I/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
11AA080T-I/SN FAQ
1.How can I place an order for 11AA080T-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 11AA080T-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 11AA080T-I/SN reliable?
The price and inventory of 11AA080T-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 11AA080T-I/SN is usually 5 days.
3.What payment methods are accepted for 11AA080T-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11AA080T-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11AA080T-I/SN?
11AA080T-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11AA080T-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 11AA080T-I/SN?
For technical support, including 11AA080T-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11AA080T-I/SN requirements.
6.How does Aetrix verify that 11AA080T-I/SN is sourced from the original manufacturer or authorized distributors?
All 11AA080T-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 11AA080T-I/SN meets industry standards.
7.What is the process for return or replacement of 11AA080T-I/SN?
All 11AA080T-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 11AA080T-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 11AA080T-I/SN part is unused and in its original packaging.
Return procedure for 11AA080T-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
11AA080T-I/SN Tags
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