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Microchip Technology 11LC080-I/SN
- Part No.:
- 11LC080-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
11LC080-I/SN.pdf
- Description:
- IC EEPROM 8KBIT SGL WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,143
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Product details
Overview
11LC080-I/SN from Microchip Technology is an 8 Kbit (1,024 × 8) serial EEPROM with UNI/O® single I/O bus interface, operating from 2.5V to 5.5V across -40°C to +85°C industrial temperature range. It features 16-byte page-write buffer, Schmitt-trigger SCIO input, output slope control, and built-in write protection for use in space-constrained embedded systems requiring low-pin-count nonvolatile storage.
For engineers reviewing the 11LC080-I/SN datasheet, 11LC080-I/SN pinout, 11LC080-I/SN application, or 11LC080-I/SN equivalent, key selection considerations include its 3-lead SOT-23 package compatibility, 100 kbps Manchester-encoded bus timing, STATUS register access for WIP/WEL monitoring, and block write-protection granularity (none/1/4/1/2/all).
Technical Context
The 11LC080-I/SN implements a Manchester-encoded UNI/O® protocol over a single bidirectional SCIO line, eliminating need for separate clock or chip-select signals. Its internal architecture includes a 16-byte page latch, re-synchronization circuitry tolerant to ±0.5% frequency drift per byte and ±0.06 UI edge jitter, and a current-limited SCIO driver supporting up to ±4 mA at 5.5V.
It uses on-chip high-voltage generation for EEPROM programming, supports self-timed write cycles (max 10 ms), and integrates power-on/off data protection logic plus a STATUS register with Write-In-Progress and Write-Enable Latch bits - all accessible via RDSR instruction without interrupting active operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 8 Kbit (1,024 × 8 organization) - provides sufficient storage for firmware patches, calibration data, or device configuration in compact systems. |
| VCC Range | 2.5V to 5.5V - compatible with standard 3.3V and 5V logic domains without level-shifting. |
| Bus Speed | 100 kbps max (equivalent to 100 kHz clock) - enables reliable communication over longer traces or noisy environments using Manchester encoding. |
| Write Endurance | 1,000,000 erase/write cycles - supports frequent field updates in industrial logging or parameter tuning applications. |
| Data Retention | > 200 years - ensures long-term reliability for mission-critical configuration storage without refresh. |
| Standby Current | 1 µA max (I-temp) - minimizes quiescent power in battery-backed or energy-harvesting systems. |
| Page Size | 16 bytes - defines maximum atomic write unit; crossing physical page boundaries causes wraparound, requiring software boundary management. |
Pinout & Package
11LC080-I/SN is packaged in 3-lead SOT-23 (SN suffix), with pin 1 = SCIO (Serial Clock/Data I/O), pin 2 = VSS (Ground), pin 3 = VCC (Supply Voltage). No NC pins are present in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCIO | Single-wire bidirectional I/O | Carries Manchester-encoded clock+data; requires external pull-up; supports Schmitt-trigger noise rejection and slope-controlled transitions to suppress ground bounce. |
| VSS | Ground reference | Return path for all internal currents; must be connected directly to system ground plane to maintain signal integrity and ESD performance. |
| VCC | Power supply input | Supplies core logic and EEPROM programming voltage; bypass capacitor (0.1 µF) required within 1 cm of pin for stable operation during write cycles. |
Key Features
| Feature | Design Value |
|---|---|
| UNI/O® Serial Interface | Single I/O eliminates need for dedicated clock, CS#, or multiple data lines - reduces PCB routing complexity and footprint in ultra-compact designs. |
| Page-Write Buffer | 16-byte buffer allows burst writes without repeated command overhead, improving effective throughput and reducing host MCU intervention time. |
| Status Register Access | RDSR instruction enables real-time polling of WIP and WEL bits - permits deterministic write completion detection without fixed delay timers. |
| Block Write Protection | BP0/BP1 bits support four protection modes (none, 1/4, 1/2, full array) - enables secure storage of critical parameters while allowing runtime updates to user data sections. |
| Schmitt Trigger Input | Hysteresis ≥ 0.05×VCC on SCIO - rejects noise spikes up to 50 ns duration and improves immunity to slow-rising signals in electrically noisy environments. |
Applications
| Smart Sensor Calibration Storage | Industrial PLC Configuration Backup |
|---|---|
|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in MEMS pressure sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed during power-up initialization; read-only during normal operation; write-enabled only during calibration procedure. Use Value: Enables field-replaceable sensor modules with unique calibration data preserved across power cycles and firmware updates, leveraging 200-year data retention. |
Use Scenario: Retaining user-defined I/O mapping, PID loop parameters, and alarm thresholds in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: System-level configuration store interfaced via microcontroller GPIO; accessed infrequently but requires guaranteed write integrity under brown-out conditions. Use Value: Built-in power-on/off write protection and 1 µA standby current ensure configuration persistence during mains interruptions and reduce auxiliary power demand. |
| Medical Device Usage Logs | Consumer Appliance Settings Memory |
|
Use Scenario: Recording cumulative operational hours, sterilization cycle counts, and error event timestamps in portable diagnostic equipment. IC Role / Device Role / Timing Role: High-endurance data logger with sequential writes to circular buffer; managed via CRRD instruction for efficient address pointer tracking. Use Value: 1M write cycles and 16-byte page buffering allow daily logging for >27 years without wear-out, while minimizing MCU CPU load during write operations. |
Use Scenario: Saving user preferences (temperature setpoints, timer durations, display brightness) in smart thermostats and induction cooktops. IC Role / Device Role / Timing Role: Low-power configuration store accessed during wake-from-standby; write-protected during normal operation to prevent accidental corruption. Use Value: 3-lead SOT-23 package fits tight board spaces; 2.5–5.5V operation matches common appliance power rails; block protection prevents overwrite of factory defaults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 11AA080-I/SN | Lower VCC min (1.8V vs 2.5V); same density, package, and UNI/O interface; identical pinout and timing. | Required for 1.8V–2.5V systems (e.g., battery-powered IoT nodes); not rated for automotive temp range. | Select 11AA080-I/SN only when operating below 2.5V; otherwise 11LC080-I/SN offers broader voltage margin and E-temp option. |
| 24LC08B-I/SN | I²C interface (2-wire, clock+data), 8Kbit, SOIC-8 package; no UNI/O compatibility; different command set and addressing. | Suitable where existing I²C infrastructure exists; requires additional PCB routing and pull-up resistors; lacks slope control and Schmitt trigger. | Choose 24LC08B-I/SN only if UNI/O bus is unavailable; migration requires firmware rewrite and layout changes due to 2-wire interface and larger package. |
Compared with 11AA080-I/SN, the 11LC080-I/SN trades 1.8V operation for higher voltage tolerance and automotive qualification; versus 24LC08B-I/SN, it delivers pin count reduction and noise immunity at the cost of interface ecosystem lock-in.
Availability
11LC080-I/SN is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and consumer appliance applications requiring stable component supply, long-life data retention, and compact packaging.
Supply support for 11LC080-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 products for embedded control applications.
The 11LC080-I/SN belongs to Microchip's UNI/O® serial EEPROM family, designed specifically for space-constrained systems needing minimal pin count, low power, and robust noise immunity in industrial and automotive environments.
FAQ
What is the operating voltage range for the 11LC080-I/SN?
The 11LC080-I/SN operates from 2.5V to 5.5V across its industrial temperature range (-40°C to +85°C). It does not support voltages below 2.5V - for 1.8V operation, the pin-compatible 11AA080-I/SN variant must be used instead. This voltage range ensures compatibility with both 3.3V and 5V logic families without level translation.
How does the 11LC080-I/SN handle write protection?
The 11LC080-I/SN implements dual-layer write protection: hardware-based block protection (via BP0/BP1 bits in STATUS register) enabling selective locking of 0%, 25%, 50%, or 100% of memory, and software-controlled write-enable latch requiring explicit WREN instruction before any write. Both mechanisms must be satisfied for a write to execute.
Can the 11LC080-I/SN be used in automotive applications?
The 11LC080-I/SN is qualified for industrial temperature range (-40°C to +85°C) only. For automotive applications requiring -40°C to +125°C operation, Microchip offers the 11LC080-E/SN variant - identical functionality and pinout but with extended temperature rating and AEC-Q100 stress testing compliance.
What is the maximum write speed of the 11LC080-I/SN?
The 11LC080-I/SN supports a maximum serial bus frequency of 100 kHz (100 kbps), with typical byte write time ≤ 5 ms and page write time ≤ 10 ms. Actual throughput depends on host controller timing precision, as the UNI/O® protocol requires strict adherence to bit period tolerances (±0.5% drift per byte, ±0.06 UI jitter).
Does the 11LC080-I/SN require external components for basic operation?
Yes - a pull-up resistor (typically 4.7 kΩ to 10 kΩ) on the SCIO line is mandatory for proper UNI/O® bus operation. Additionally, a 0.1 µF ceramic bypass capacitor must be placed between VCC and VSS within 1 cm of the 11LC080-I/SN package to stabilize supply during internal write cycles and ensure reliable communication.
11LC080-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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
11LC080-I/SN FAQ
1.How can I place an order for 11LC080-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 11LC080-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 11LC080-I/SN reliable?
The price and inventory of 11LC080-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 11LC080-I/SN is usually 5 days.
3.What payment methods are accepted for 11LC080-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11LC080-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11LC080-I/SN?
11LC080-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11LC080-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 11LC080-I/SN?
For technical support, including 11LC080-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11LC080-I/SN requirements.
6.How does Aetrix verify that 11LC080-I/SN is sourced from the original manufacturer or authorized distributors?
All 11LC080-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 11LC080-I/SN meets industry standards.
7.What is the process for return or replacement of 11LC080-I/SN?
All 11LC080-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 11LC080-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 11LC080-I/SN part is unused and in its original packaging.
Return procedure for 11LC080-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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