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Microchip Technology 11LC020T-I/SN
- Part No.:
- 11LC020T-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
11LC020T-I/SN.pdf
- Description:
- IC EEPROM 2KBIT SGL WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,684
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Product details
Overview
11LC020T-I/SN from Microchip Technology Inc. is a 2 Kbit (256 x 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 including power-on/off circuitry and STATUS register with WEL/WIP bits. It is used in space-constrained embedded systems for parameter storage, calibration data retention, and firmware configuration.
For engineers reviewing the 11LC020T-I/SN datasheet, 11LC020T-I/SN pinout, 11LC020T-I/SN application, or 11LC020T-I/SN equivalent, key selection considerations include its 3-lead SOT-23 package, UNI/O® protocol timing compliance (10–100 kHz), 1 µA max standby current, 16-byte page buffer, and block write protection (none/1/4/1/2/all array).
Technical Context
The 11LC020T-I/SN implements Manchester-encoded UNI/O® communication over a single bidirectional SCIO line, extracting clock and data from one signal stream. Its internal architecture includes an 8-bit instruction register, page latches, HV generator, and EEPROM array with X/Y decoders and sense amplifiers.
It supports master-controlled bus timing with re-synchronization on MAK edges, tolerating ±0.06 UI input jitter and ±0.5% per byte frequency drift. Standby mode activates after NoMAK/SAK termination or explicit standby pulse (≥600 µs high), and Idle mode enters on invalid address, command, or sync loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 2 Kbit (256 × 8 organization) |
| VCC Range | 2.5 V to 5.5 V - enables direct interfacing with 3.3 V and 5 V microcontrollers without level shifting |
| Interface | Single I/O UNI/O® bus - reduces PCB routing to one signal plus VCC/VSS, ideal for pin-limited MCUs |
| Page Size | 16 bytes - allows efficient burst writes up to full page without intermediate commands |
| Write Endurance | 1,000,000 cycles - supports frequent field updates such as logging or counter storage |
| Data Retention | >200 years - ensures long-term reliability in unpowered storage applications |
| Max Bus Frequency | 100 kHz - defines maximum sustained throughput of ~10 KB/s (including overhead) |
| Standby Current | 1 µA max at 85°C - enables ultra-low-power operation in battery-backed or energy-harvesting systems |
Pinout & Package
11LC020T-I/SN is packaged in 3-lead SOT-23 (SN suffix), with SCIO serving as bidirectional serial clock/data I/O, VCC as supply voltage, and VSS as ground. No NC pins are present in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SCIO) | Serial Clock/Data I/O | Bidirectional Manchester-encoded bus line - carries both clock and data; requires external pull-up; supports Schmitt-trigger noise immunity and slope-controlled transitions |
| 2 (VSS) | Ground | Reference return path for all internal circuitry and SCIO driver; must be low-impedance for stable timing and ESD performance |
| 3 (VCC) | Supply Voltage | Power input for EEPROM core and interface logic; operates from 2.5 V to 5.5 V; internal regulation enables consistent timing across voltage range |
Key Features
| Feature | Design Value |
|---|---|
| UNI/O® Serial Interface | Single-pin bus eliminates dedicated clock line and simplifies MCU GPIO usage in resource-constrained designs |
| Page Write Buffer | 16-byte buffer enables atomic multi-byte writes without host intervention between bytes, reducing bus occupancy and error risk |
| Status Register Access | Read-only WIP and WEL bits allow real-time monitoring of write progress and protection state without halting other operations |
| Block Write Protection | BP0/BP1 bits support four protection modes (none, 1/4, 1/2, or full array), enabling secure partitioning of configuration vs. user data |
| Output Slope Control | Controlled edge rates suppress ground bounce and EMI in noisy mixed-signal environments, improving system-level signal integrity |
| Schmitt Trigger Input | Hysteresis ≥0.05×VCC rejects noise on SCIO line, ensuring reliable start-header detection and command decoding |
Applications
| Smart Sensor Calibration Storage | Industrial PLC Configuration Memory |
|---|---|
|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in MEMS pressure sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up or recalibration; UNI/O® interface minimizes MCU pin count in compact sensor modules. Use Value: Enables field-upgradable calibration without redesign; 256×8 capacity accommodates multiple sensor channels and metadata within 3-lead SOT-23 footprint. |
Use Scenario: Holding user-defined I/O mapping, alarm thresholds, and communication settings in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Persistent configuration store updated infrequently but requiring high reliability; accessed via low-speed UNI/O® during setup or maintenance. Use Value: Survives 1M write cycles and >200-year data retention; block protection prevents accidental overwrite of critical safety parameters during firmware updates. |
| Medical Device Usage Logs | Automotive Body Control Module Settings |
|
Use Scenario: Recording cumulative operational hours, self-test results, and service intervals in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-power event logger using standby current ≤1 µA; writes triggered by discrete events rather than continuous streaming. Use Value: Extends battery life in battery-operated devices; page buffering ensures complete log entries survive power loss during write cycles. |
Use Scenario: Storing seat position memory, mirror presets, and lighting profiles in automotive body control units (BCUs). IC Role / Device Role / Timing Role: Automotive-grade (I-temp) nonvolatile memory interfaced to 8-bit/16-bit MCUs; withstands temperature cycling and ESD per ISO 10605. Use Value: Qualified for -40°C to +85°C operation; 4 kV HBM ESD rating meets automotive robustness requirements; UNI/O® simplifies routing in dense BCU PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 11AA020T-I/SN | Wider VCC range (1.8–5.5 V); same density, page size, and UNI/O® interface; identical SOT-23-3 package | Supports 1.8 V MCU interfaces (e.g., low-power ARM Cortex-M0+), whereas 11LC020T-I/SN requires ≥2.5 V | Select 11AA020T-I/SN when interfacing with sub-2.5 V logic; otherwise, 11LC020T-I/SN offers identical functionality at lower cost in 2.5–5.5 V systems. |
| 24LC02BT-I/SN | I²C interface (2-wire), 2 Kbit, 3-lead SOT-23; no UNI/O®; requires separate SCL/SDA lines and external pull-ups | Requires two MCU GPIOs and supports standard I²C addressing (up to 8 devices); lacks built-in block protection and STATUS register | Choose 24LC02BT-I/SN only if existing design uses I²C infrastructure; 11LC020T-I/SN reduces pin count and adds protection features unavailable in basic I²C EEPROMs. |
Compared with 11AA020T-I/SN, the 11LC020T-I/SN trades 1.8 V compatibility for cost efficiency in 2.5–5.5 V systems; compared with 24LC02BT-I/SN, it replaces dual-wire I²C with single-wire UNI/O®, adds block protection and status monitoring, and improves noise immunity-making it superior for pin-constrained, high-reliability embedded applications.
Availability
11LC020T-I/SN is available at Aetrix Electronics and suitable for smart sensor calibration storage, industrial PLC configuration memory, medical device usage logs, and automotive body control module settings requiring stable component supply and long-term lifecycle support.
Supply support for 11LC020T-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, with a focus on embedded control and connectivity solutions.
The 11LC020T-I/SN belongs to Microchip's UNI/O® serial EEPROM family, designed specifically for ultra-low-pin-count, low-power embedded systems where MCU GPIO resources are constrained and robust nonvolatile storage is required.
FAQ
What is the UNI/O® interface used by the 11LC020T-I/SN?
The 11LC020T-I/SN uses Microchip's patented UNI/O® serial bus, which combines clock and data onto a single bidirectional SCIO line using Manchester encoding. This eliminates the need for a separate clock signal, reducing interconnect complexity. The 11LC020T-I/SN supports bus frequencies from 10 kHz to 100 kHz and includes built-in re-synchronization to tolerate frequency drift and edge jitter during communication.
Does the 11LC020T-I/SN support hardware write protection?
Yes, the 11LC020T-I/SN supports hardware-based block write protection via BP0 and BP1 bits in its STATUS register, allowing users to protect none, 1/4, 1/2, or the entire memory array. Protection is nonvolatile and persists across power cycles. Additionally, it includes built-in power-on/off write protection circuitry and a write enable latch (WEL) that must be set before any write operation can proceed.
What package type does the 11LC020T-I/SN use, and what are its dimensions?
The 11LC020T-I/SN uses the 3-lead SOT-23 package (indicated by the "SN" suffix). Its body dimensions are 2.9 mm × 1.6 mm × 1.1 mm (L × W × H), with 0.95 mm lead pitch and gull-wing leads. This compact footprint is optimized for space-constrained PCB layouts in portable and embedded applications.
How many write/erase cycles does the 11LC020T-I/SN guarantee?
The 11LC020T-I/SN guarantees 1,000,000 erase/write cycles per memory location under specified conditions (25°C, VCC = 5.5 V). This endurance rating is validated through characterization and supported by Microchip's Total Endurance™ Model. Real-world endurance may vary based on operating voltage, temperature, and write pattern, but the 11LC020T-I/SN is engineered for high-reliability data logging and configuration storage.
Can the 11LC020T-I/SN operate at 1.8 V?
No, the 11LC020T-I/SN is rated for VCC = 2.5 V to 5.5 V only. For 1.8 V operation, Microchip offers the functionally identical 11AA020T-I/SN, which shares the same 2 Kbit density, UNI/O® interface, SOT-23-3 package, and feature set but extends the supply range down to 1.8 V. Using the 11LC020T-I/SN below 2.5 V may result in unreliable operation or failure to meet AC/DC specifications.
11LC020T-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:
- 2Kbit
- Memory Organization:
- 256 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
11LC020T-I/SN FAQ
1.How can I place an order for 11LC020T-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 11LC020T-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 11LC020T-I/SN reliable?
The price and inventory of 11LC020T-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 11LC020T-I/SN is usually 5 days.
3.What payment methods are accepted for 11LC020T-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11LC020T-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11LC020T-I/SN?
11LC020T-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11LC020T-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 11LC020T-I/SN?
For technical support, including 11LC020T-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11LC020T-I/SN requirements.
6.How does Aetrix verify that 11LC020T-I/SN is sourced from the original manufacturer or authorized distributors?
All 11LC020T-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 11LC020T-I/SN meets industry standards.
7.What is the process for return or replacement of 11LC020T-I/SN?
All 11LC020T-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 11LC020T-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 11LC020T-I/SN part is unused and in its original packaging.
Return procedure for 11LC020T-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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