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Microchip Technology 11LC020T-E/SN
- Part No.:
- 11LC020T-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
11LC020T-E/SN.pdf
- Description:
- IC EEPROM 2KBIT SGL WIRE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,805
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Product details
Overview
11LC020T-E/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 +125°C (Automotive grade), featuring 16-byte page write buffer, Schmitt-trigger SCIO input, and built-in write protection for automotive body control modules and sensor calibration storage.
For engineers reviewing the 11LC020T-E/SN datasheet, 11LC020T-E/SN pinout, 11LC020T-E/SN application, or 11LC020T-E/SN equivalent, key selection considerations include its UNI/O® bus timing tolerance (±0.5% frequency drift per byte), 100 kbps max bit rate, standby current ≤1 µA at 125°C, and automotive-qualified SOT-23-3 packaging with VCC/SCIO/VSS terminals.
Technical Context
The 11LC020T-E/SN implements Manchester-encoded UNI/O® protocol over a single bidirectional SCIO line, requiring master-controlled clock synchronization via start header (01010101) and ACK sequence (MAK/SAK). Its internal address pointer auto-increments during sequential reads and wraps on overflow.
It integrates a 16-byte page latch, STATUS register with WIP/WEL/BP bits, and hardware write-enable latch reset on power-up, WRDI, WRSR, WRITE, ERAL, or SETAL completion. Block protection supports none, 1/4, 1/2, or full array lock via BP0/BP1 bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 2 Kbit (256 × 8 organization) |
| VCC Range | 2.5V to 5.5V - supports direct connection to 3.3V or 5V MCU I/O without level shifters |
| Interface | Single I/O UNI/O® bus - reduces PCB routing to one signal plus VCC/GND |
| Page Size | 16 bytes - enables efficient burst writes without exceeding physical page boundaries |
| Write Endurance | 1,000,000 cycles - ensures long-term reliability in firmware update or logging applications |
| Data Retention | >200 years - guarantees nonvolatile storage integrity over full automotive lifecycle |
| Temp Range | -40°C to +125°C (Automotive E-grade) - qualified for under-hood and powertrain environments |
Pinout & Package
11LC020T-E/SN is housed in a Pb-free, RoHS-compliant 3-lead SOT-23 package (SN suffix), with pin 1 = SCIO, pin 2 = VCC, pin 3 = VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCIO | Serial Clock/Data I/O | Bidirectional Manchester-encoded bus line - carries clock and data in single stream; includes Schmitt trigger and slope control |
| VCC | Supply Voltage | Power input (2.5–5.5V); powers internal HV generator for EEPROM writes |
| VSS | Ground | Reference return path for all internal circuitry and I/O; must be low-impedance for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| UNI/O® Serial Interface | Single-pin bus eliminates dedicated clock line - simplifies layout and reduces MCU pin count |
| Self-Timed Write Cycle | No external timing control needed - internal state machine manages erase/write/verify sequence |
| Status Register Access | Real-time WIP and WEL monitoring via RDSR command - enables software polling without blocking |
| Output Slope Control | Controls SCIO edge slew rate - suppresses ground bounce in noisy automotive power domains |
| Block Write Protection | Configurable BP0/BP1 bits - allows selective locking of memory regions for secure firmware parameter storage |
Applications
| Automotive Body Control Unit | Industrial Sensor Calibration |
|---|---|
Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed infrequently via UNI/O® bus during power-up or user adjustment. Use Value: Automotive temperature rating (-40°C to +125°C) and 200-year data retention ensure settings persist over vehicle lifetime without refresh. | Use Scenario: Holding factory-trimmed offset/gain coefficients for pressure or temperature sensors in industrial transmitters. IC Role / Device Role / Timing Role: Secure, write-protected memory for calibration constants loaded once during manufacturing. Use Value: Block protection (BP0/BP1) prevents accidental overwrite during field servicing while allowing read access at runtime. |
| Medical Device Parameter Storage | Smart Home Actuator Configuration |
Use Scenario: Saving therapy parameters (e.g., infusion rate, alarm thresholds) in portable insulin pumps or nebulizers. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced to ultra-low-power MCU via single GPIO, minimizing active current draw. Use Value: 1 µA max standby current at 125°C extends battery life in sealed, maintenance-free medical enclosures. | Use Scenario: Storing motor direction, travel limits, and soft-start profiles in smart blinds or HVAC dampers. IC Role / Device Role / Timing Role: Configuration memory updated only during commissioning or firmware upgrade via UNI/O® bus. Use Value: Page-write buffer (16 bytes) enables atomic updates of multi-parameter sets without partial-write corruption risk. |
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 (1.8–5.5V); Industrial temp only (-40°C to +85°C); same density, page size, and UNI/O® interface | Not qualified for automotive under-hood use; suitable for cost-sensitive consumer or industrial designs with 1.8V logic | Select 11AA020T-I/SN only if supply voltage may dip below 2.5V and automotive qualification is unnecessary |
| AT24C02C-SSHM-T | I²C interface (2-wire), 1 MHz max clock, 5.5V VCC, -40°C to +125°C; no UNI/O® compatibility | Requires two dedicated I/O pins (SCL/SDA); incompatible bus protocol; different command set and addressing | Choose AT24C02C-SSHM-T only when existing design uses I²C infrastructure and UNI/O® pin reduction is not required |
Compared with 11AA020T-I/SN, the 11LC020T-E/SN provides automotive temperature qualification but lacks 1.8V operation; versus AT24C02C-SSHM-T, it offers single-pin simplicity and lower pin-count MCU integration at the cost of protocol-specific firmware support.
Availability
11LC020T-E/SN is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor calibration, and medical device parameter storage requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 11LC020T-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 global manufacturing and quality certifications including AEC-Q100 for automotive components.
The 11LCxxx family was designed specifically for space-constrained, low-pin-count embedded systems needing reliable nonvolatile storage with minimal MCU resource usage - particularly targeting automotive, industrial, and medical applications where single-wire simplicity and high-temp reliability are critical.
FAQ
What is the maximum bit rate supported by the 11LC020T-E/SN?
The 11LC020T-E/SN supports a maximum bit rate of 100 kbps, equivalent to a 100 kHz serial bus frequency. This is specified under AC characteristics with a minimum bit period (TE) of 10 µs and maximum of 100 µs. The device maintains timing compliance across its full automotive temperature range (-40°C to +125°C) and supply voltage range (2.5V to 5.5V).
Does the 11LC020T-E/SN require external pull-up resistors on the SCIO line?
Yes, the 11LC020T-E/SN requires an external pull-up resistor on the SCIO line - typically 4.7 kΩ to 10 kΩ - to ensure proper logic high levels during idle and standby states. The SCIO pin is open-drain capable, and the internal output driver sinks current during low transitions; the pull-up establishes the high state and meets VIH specification (≥0.7×VCC).
How does write protection work on the 11LC020T-E/SN?
Write protection on the 11LC020T-E/SN is controlled by two nonvolatile BP0 and BP1 bits in the STATUS register, set via the WRSR command. These bits enable four protection modes: no protection (00), protect 1/4 array (01), protect 1/2 array (10), or protect entire array (11). Protection is enforced at the hardware level and persists through power cycles.
Can the 11LC020T-E/SN be used with a 1.8V microcontroller?
No, the 11LC020T-E/SN has a minimum VCC of 2.5V and is not compatible with 1.8V logic systems. For 1.8V operation, Microchip's 11AA020T-I/SN variant supports 1.8–5.5V but is rated only for Industrial temperature (-40°C to +85°C), not Automotive E-grade. Direct interfacing to 1.8V MCUs would violate VIH/VIL specifications and risk communication failure.
What is the purpose of the STATUS register in the 11LC020T-E/SN?
The STATUS register in the 11LC020T-E/SN provides real-time visibility into device state: the WIP bit indicates active write cycles, the WEL bit shows write-enable latch status, and BP0/BP1 bits reflect current block protection configuration. It is readable at any time - even during internal writes - enabling robust firmware error handling and status polling without halting other operations.
11LC020T-E/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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
11LC020T-E/SN FAQ
1.How can I place an order for 11LC020T-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 11LC020T-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 11LC020T-E/SN reliable?
The price and inventory of 11LC020T-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 11LC020T-E/SN is usually 5 days.
3.What payment methods are accepted for 11LC020T-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11LC020T-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11LC020T-E/SN?
11LC020T-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11LC020T-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 11LC020T-E/SN?
For technical support, including 11LC020T-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11LC020T-E/SN requirements.
6.How does Aetrix verify that 11LC020T-E/SN is sourced from the original manufacturer or authorized distributors?
All 11LC020T-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 11LC020T-E/SN meets industry standards.
7.What is the process for return or replacement of 11LC020T-E/SN?
All 11LC020T-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 11LC020T-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 11LC020T-E/SN part is unused and in its original packaging.
Return procedure for 11LC020T-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
11LC020T-E/SN Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24C02C-SSHM-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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