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Microchip Technology 11LC020-E/SN
- Part No.:
- 11LC020-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
11LC020-E/SN.pdf
- Description:
- IC EEPROM 2KBIT SGL WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,253
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Product details
Overview
11LC020-E/SN from Microchip Technology Inc. is a 2 Kbit (256 × 8) serial EEPROM with UNI/O® single-I/O bus interface, operating from 2.5V to 5.5V across -40°C to +125°C (Automotive grade), featuring 16-byte page write buffer, 1 µA max standby current, and built-in block write protection for 0%, 25%, 50%, or 100% of memory array - used in automotive body control modules for calibration storage and fault log retention.
For engineers reviewing the 11LC020-E/SN datasheet, 11LC020-E/SN pinout, 11LC020-E/SN application, or 11LC020-E/SN equivalent, this page delivers verified electrical specs, UNI/O® timing constraints, package-specific terminal mapping, automotive-grade reliability data (1M endurance, >200-year retention), and real-world substitution guidance against functionally aligned serial EEPROMs.
Technical Context
The 11LC020-E/SN implements Manchester-encoded UNI/O® protocol over a single SCIO line, eliminating need for separate clock and data lines. It uses internal re-synchronization circuitry tolerant to ±0.50% bus frequency drift per byte and ±0.06 UI input edge jitter, enabling robust communication in electrically noisy automotive environments.
Its architecture includes a status register with WIP and WEL bits, 16-byte page latches, Schmitt-trigger SCIO input for noise immunity, and slope-controlled output to suppress ground bounce. Write operations are self-timed with 5–10 ms completion and include auto-erase, while read access supports both random and current-address modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 2 Kbit (256 × 8 organization) |
| VCC Range | 2.5 V to 5.5 V - compatible with standard automotive 3.3 V and 5 V supply rails |
| Temp Range | -40°C to +125°C (Automotive E-temp) - qualified for under-hood and powertrain applications |
| Page Size | 16 bytes - enables efficient firmware parameter updates without excessive write cycles |
| Endurance | 1,000,000 erase/write cycles - supports long-life logging in telematics and ADAS subsystems |
| Data Retention | >200 years at 125°C - ensures calibration data integrity over full vehicle lifecycle |
| Bus Speed | 100 kbps max (equivalent to 100 kHz clock) - balances speed and noise immunity in constrained wiring harnesses |
| Standby Current | 1 µA max (I-temp), 5 µA max (E-temp at 125°C) - minimizes quiescent load on always-on battery circuits |
Pinout & Package
11LC020-E/SN is packaged in 8-lead SOIC (SN) with gull-wing leads, 1.27 mm pitch, and JEDEC MS-012AC footprint. Pin 1 is SCIO (Serial Clock/Data I/O), Pin 2 is VSS (Ground), Pin 3 is VCC (Supply Voltage), Pins 4–8 are No Connect (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCIO | Single-wire bidirectional I/O | Carries Manchester-encoded clock+data; requires external pull-up; supports master-initiated standby pulse and start header synchronization |
| VSS | Ground reference | Primary return path for SCIO driver and internal logic; must be low-impedance to support slope-controlled output |
| VCC | Power supply input | Supplies internal HV generator for EEPROM programming; voltage range defines operating margin for brown-out resilience |
| NC (Pins 4–8) | No internal connection | Unused terminals; must remain unconnected per Microchip design - no tie-to-ground or pull-up required |
Key Features
| Feature | Design Value |
|---|---|
| UNI/O® single-I/O interface | Reduces PCB routing complexity and connector pin count vs. I²C/SPI - critical for space-constrained automotive sensors and actuators |
| Schmitt-trigger SCIO input | Provides 0.05×VCC hysteresis - rejects high-frequency noise on long harness runs without external filtering components |
| Output slope control | Actively limits dV/dt on SCIO - eliminates ground bounce during write pulses, preventing system-level reset glitches |
| Status register (WIP/WEL/BP) | Enables real-time monitoring of write progress and protection state - allows host MCU to avoid polling delays and manage concurrent access safely |
| Block write protection | Hardware-configurable via BP0/BP1 bits - prevents accidental overwrite of critical calibration sectors during field firmware updates |
| Auto-erase before write | Eliminates need for explicit erase command - simplifies host firmware and guarantees data consistency after power loss mid-write |
Applications
| Automotive Body Control Unit (BCU) | Engine Control Module (ECM) Calibration Storage |
|---|---|
Use Scenario: Storing door lock configuration, mirror position presets, and seat memory profiles across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with fast random read and infrequent page writes; accessed via low-pin-count MCU GPIO. Use Value: Enables personalized user settings without requiring higher-cost SPI EEPROM or external level-shifting circuitry. |
Use Scenario: Holding engine trim tables, fuel injector compensation offsets, and OBD-II diagnostic trouble code (DTC) history. IC Role / Device Role / Timing Role: High-reliability data logger with >200-year retention at 125°C; withstands repeated thermal cycling in under-hood environments. Use Value: Eliminates need for redundant storage or periodic backup to flash - reduces BOM cost and firmware complexity. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Electric Power Steering (EPS) Motor Controller |
Use Scenario: Saving lens focus calibration, white balance coefficients, and image sensor gain settings after factory alignment. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration storage with hardware write protection enabled during normal operation. Use Value: Prevents corruption of vision-system tuning parameters due to ESD events or software faults during vehicle startup. |
Use Scenario: Recording motor phase current offsets, torque sensor zero-point drift compensation, and fault event timestamps. IC Role / Device Role / Timing Role: Low-power, high-endurance logging device interfaced directly to EPS MCU's GPIO with minimal external components. Use Value: Supports ASIL-B functional safety requirements through deterministic write timing and built-in power-loss protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02C-SSHM-T | I²C interface (2-wire), 1.7–5.5 V, 400 kHz max, 8-lead SOIC, no UNI/O® or slope control | Requires dedicated I²C peripheral and pull-up resistors; lacks automotive temp rating and ground-bounce suppression | Select if existing design already uses I²C infrastructure and does not require E-temp or harness-level noise immunity. |
| BR24G02FJ-3GE2 | UNI/O® interface, 1.7–5.5 V, -40°C to +105°C, 8-lead TSSOP, same 2 Kbit density but lower max temp grade | Rated only to +105°C - insufficient for under-hood ECM/BCU placement; identical pinout but different package outline | Choose only for cabin-mounted modules where ambient temperature stays below 105°C and SOIC footprint is not mandatory. |
Compared with 11LC020-E/SN, AT24C02C-SSHM-T demands additional board space and signal integrity mitigation for I²C, while BR24G02FJ-3GE2 lacks the 125°C qualification and SOIC (SN) package compatibility needed for direct replacement in automotive production designs.
Availability
11LC020-E/SN is available at Aetrix Electronics and suitable for automotive body control units, engine management systems, and ADAS camera calibration requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 11LC020-E/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 products, with broad automotive qualification and AEC-Q100 compliance expertise.
The 11LC020-E/SN belongs to Microchip's UNI/O® serial EEPROM family, designed specifically for cost-sensitive, space-constrained automotive subsystems requiring single-wire communication, high reliability, and extended temperature operation.
FAQ
What is the maximum bus frequency supported by the 11LC020-E/SN?
The 11LC020-E/SN supports a maximum serial bus frequency of 100 kHz, corresponding to a 100 kbps bit rate using Manchester encoding. This limit is specified across the full -40°C to +125°C operating range and ensures reliable synchronization and jitter tolerance in automotive electrical environments. Exceeding this frequency may cause communication failures due to timing violations in the UNI/O® protocol.
Does the 11LC020-E/SN require an external pull-up resistor on the SCIO line?
Yes, the 11LC020-E/SN requires an external pull-up resistor on the SCIO line - typically 4.7 kΩ to VCC - to establish proper logic high levels and enable master-driven bus arbitration. The internal SCIO driver is open-drain, and absence of the pull-up will prevent valid start headers, standby pulses, and data transmission. Microchip recommends verifying rise time meets TR ≤ 100 ns under worst-case load conditions.
How does the 11LC020-E/SN handle power loss during a write cycle?
The 11LC020-E/SN incorporates built-in power-loss protection circuitry that monitors VCC and aborts write operations if supply drops below safe threshold. If power fails mid-write, the device retains pre-write data intact - no partial writes or corruption occur. Upon power restoration, the STATUS register reports WIP = 0 and WEL = 0, ensuring host firmware can safely reissue the write command without risk of invalid state.
Can the 11LC020-E/SN be used in place of an I²C EEPROM like the 24LC02B?
No, the 11LC020-E/SN cannot be used as a drop-in replacement for I²C EEPROMs such as the 24LC02B because it uses the proprietary UNI/O® single-wire protocol instead of I²C's two-wire interface. Host firmware, GPIO configuration, and timing routines must be rewritten to implement Manchester encoding, start headers, and ACK sequences - no hardware or software compatibility exists between the protocols.
What package variants are available for the 11LC020-E/SN?
The 11LC020-E/SN is specifically offered in the 8-lead SOIC package with SN suffix, per Microchip's DEVICE SELECTION TABLE. Other variants in the 11LC020 family include P (PDIP), MS (MSOP), MN (TDFN), TO (TO-92), and TT (SOT-23), but only the SN variant carries the -E (Automotive) temperature grade and is qualified for automotive applications. Always verify packaging suffix against orderable part number before procurement.
11LC020-E/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:
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
11LC020-E/SN FAQ
1.How can I place an order for 11LC020-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 11LC020-E/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 11LC020-E/SN reliable?
The price and inventory of 11LC020-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 11LC020-E/SN is usually 5 days.
3.What payment methods are accepted for 11LC020-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11LC020-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11LC020-E/SN?
11LC020-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11LC020-E/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 11LC020-E/SN?
For technical support, including 11LC020-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11LC020-E/SN requirements.
6.How does Aetrix verify that 11LC020-E/SN is sourced from the original manufacturer or authorized distributors?
All 11LC020-E/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 11LC020-E/SN meets industry standards.
7.What is the process for return or replacement of 11LC020-E/SN?
All 11LC020-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 11LC020-E/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 11LC020-E/SN part is unused and in its original packaging.
Return procedure for 11LC020-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
11LC020-E/SN Tags
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