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Microchip Technology 11LC020-E/P
- Part No.:
- 11LC020-E/P
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
11LC020-E/P.pdf
- Description:
- IC EEPROM 2KBIT SGL WIRE 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,105
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Product details
Overview
11LC020-E/P from Microchip Technology 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 temperature range. It delivers 1 mA typical active current, 1 µA max standby current, and supports 100 kbps Manchester-encoded communication for embedded sensor calibration, firmware parameter storage, and automotive subsystem configuration.
For engineers reviewing the 11LC020-E/P datasheet, 11LC020-E/P pinout, 11LC020-E/P application, or 11LC020-E/P equivalent, key selection considerations include its automotive-grade temperature rating, 16-byte page-write buffer, STATUS register with WIP/WEL flags, block write protection (none/1/4/1/2/all), and SOT-23-3/TO-92/PDIP-8 package compatibility in production-constrained environments.
Technical Context
The 11LC020-E/P implements a Manchester-encoded UNI/O® bus protocol on a single SCIO pin, eliminating separate clock lines and reducing PCB routing complexity. Its internal architecture includes a 16-byte page latch, Schmitt-triggered SCIO input for noise immunity, and slope-controlled output to suppress ground bounce during transitions.
It features autonomous self-timed write cycles with built-in auto-erase, a read-only STATUS register (WIP, WEL, BP0/BP1), and hardware write protection via power-on/off circuitry and write-enable latch control - all synchronized to master-driven timing without external clocks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Density | 2 Kbit (256 × 8 organization) - fixed memory map enabling deterministic address pointer rollover during sequential reads. |
| VCC Range | 2.5V to 5.5V - supports direct connection to 3.3V or 5V microcontroller I/O rails without level-shifting. |
| Interface | Single-pin UNI/O® bus (SCIO) with Manchester encoding - eliminates dedicated clock line and reduces pin count on resource-constrained MCUs. |
| Max Bit Rate | 100 kbps (equivalent to 100 kHz clock) - defines maximum sustained data throughput for parameter updates in real-time systems. |
| Write Endurance | 1,000,000 erase/write cycles per page - ensures long-term reliability in field-updatable calibration or logging applications. |
| Data Retention | >200 years at +85°C - guarantees nonvolatile storage integrity over full automotive lifecycle without refresh. |
| Temp Range | -40°C to +125°C (Automotive E-temp) - qualified for under-hood and ADAS module deployment without derating. |
| ESD Protection | >4,000V HBM - provides robustness against handling and system-level electrostatic discharge events. |
Pinout & Package
11LC020-E/P is packaged in 8-lead PDIP (P suffix), with lead finish Pb-Free/RoHS compliant. Pin 1 = VSS (Ground), Pin 4 = SCIO (Serial Clock/Data I/O), Pin 8 = VCC (Supply Voltage); Pins 2, 3, 5–7 are No Connect (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS (Pin 1) | Ground reference | Primary return path for SCIO signaling and internal charge pump; must be low-impedance for stable UNI/O® timing. |
| SCIO (Pin 4) | Serial Clock/Data I/O | Bi-directional Manchester-encoded bus line - carries clock, command, address, and data; requires external pull-up resistor (typically 4.7kΩ). |
| VCC (Pin 8) | Supply voltage | Power source for EEPROM array, logic, and HV generator; decoupling capacitor (0.1 µF) required within 10 mm of pin. |
| NC (Pins 2,3,5–7) | No connection | Internally unconnected; may be left floating or tied to VSS/VCC per board layout requirements - no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt trigger inputs | 0.05×VCC hysteresis on SCIO - rejects sub-microsecond noise spikes common in automotive harness environments. |
| Output slope control | Controlled edge rate on SCIO - prevents ground bounce-induced bit errors during high-speed transitions on shared PCB planes. |
| Page-write buffer | 16-byte buffer - enables burst writes within one physical page (0x00–0x0F, 0x10–0x1F, etc.), reducing total write time vs. byte-by-byte programming. |
| Status register | Read-only WIP/WEL/BP bits - allows polling for write completion and verification of protection state without halting MCU execution. |
| Block write protection | Configurable via WRSR: protect none, 1/4, 1/2, or entire array - prevents accidental overwrites of critical calibration or security keys. |
| Auto-erase before write | Self-timed erase integrated into write cycle - eliminates need for explicit erase commands and simplifies firmware implementation. |
Applications
| Engine Control Unit (ECU) Trim Storage | ADAS Camera Module Calibration Data |
|---|---|
|
Use Scenario: Storing factory-set fuel injection timing offsets, idle air control values, and OBD-II diagnostic thresholds in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Nonvolatile parameter repository accessed during boot and runtime via UNI/O® bus; retains data across ignition cycles. Use Value: Enables precise engine tuning without requiring reprogramming; 256×8 capacity accommodates 32+ trim parameters with redundancy. |
Use Scenario: Holding lens distortion coefficients, white balance matrices, and exposure gain tables for automotive surround-view cameras. IC Role / Device Role / Timing Role: Calibration data vault interfaced to image signal processor (ISP) via single GPIO; accessed only during camera initialization. Use Value: Eliminates need for external SPI flash or larger EEPROMs; automotive temp rating ensures stability under hood thermal cycling. |
| Body Control Module (BCM) Configuration | Infotainment System User Preferences |
|
Use Scenario: Saving door lock behavior, window auto-up/down settings, and lighting timeout values in BCM firmware. IC Role / Device Role / Timing Role: Low-pin-count configuration store accessed by 8-bit MCU over UNI/O®; written infrequently but read at power-on. Use Value: Reduces BOM cost and PCB area vs. 4-wire SPI EEPROM; 1 µA standby current extends battery life in sleep mode. |
Use Scenario: Persisting radio station presets, display brightness levels, and audio equalizer profiles across vehicle power cycles. IC Role / Device Role / Timing Role: User data retention element connected to infotainment SoC's general-purpose I/O; updated only on menu save action. Use Value: 1,000,000 write cycles support daily user interaction over 10+ years; block protection prevents corruption during firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 11AA020-I/P | 1.8–5.5V supply range; Industrial (-40°C to +85°C) temp grade only; same 2 Kbit density and UNI/O® interface. | Lacks automotive qualification; unsuitable for under-hood or safety-critical modules requiring AEC-Q100 compliance. | Select when cost-sensitive industrial designs operate below 2.5V or require extended low-voltage operation. |
| AT24C02C-SSHM-T | I²C interface (2-wire), 1 MHz max clock, 1.7–5.5V, 2 Kbit density; no UNI/O® or Manchester encoding. | Requires two dedicated pins (SCL/SDA); incompatible bus protocol necessitates MCU firmware rewrite and layout change. | Choose only if existing design already uses I²C infrastructure and UNI/O® pin reduction is not required. |
Compared with 11LC020-E/P, the 11AA020-I/P offers broader voltage flexibility but lacks automotive qualification, while the AT24C02C-SSHM-T demands additional pins and protocol stack changes - making 11LC020-E/P the optimal choice for new automotive designs prioritizing pin count, temperature resilience, and single-wire simplicity.
Availability
11LC020-E/P is available at Aetrix Electronics and suitable for automotive ECU calibration, ADAS sensor configuration, and body control module parameter storage requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 11LC020-E/P 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 solutions for industrial, automotive, and consumer markets.
The 11LC020-E/P belongs to Microchip's UNI/O® serial EEPROM family, designed specifically to reduce pin count and simplify integration in space-constrained, cost-sensitive automotive and embedded systems requiring reliable nonvolatile storage.
FAQ
What is the operating voltage range for the 11LC020-E/P?
The 11LC020-E/P operates from 2.5V to 5.5V across its full automotive temperature range (-40°C to +125°C). This range aligns with standard 3.3V and 5V logic rails, eliminating the need for voltage translation in most MCU interfaces. Operation below 2.5V is not supported - unlike the 11AA020 variant, which extends down to 1.8V but lacks E-temp qualification.
Does the 11LC020-E/P support page writes, and what is the page size?
Yes, the 11LC020-E/P supports page writes with a 16-byte buffer. Each physical page spans 16 consecutive addresses (e.g., 0x00–0x0F), and writes crossing page boundaries wrap around within the same page. This design enables efficient burst programming but requires firmware to align multi-byte writes to page boundaries to avoid unintended overwrites.
How does the STATUS register function in the 11LC020-E/P?
The 11LC020-E/P STATUS register provides real-time visibility into device state: WIP (Write-In-Progress) indicates active internal write cycles, WEL (Write Enable Latch) shows whether writes are permitted, and BP0/BP1 configure block protection. All bits are read-only and accessible anytime - including during writes - enabling safe polling without interrupting MCU operations.
What package options are available for the 11LC020-E/P?
The 11LC020-E/P is offered in 8-lead PDIP (P suffix), as indicated by the "-E/P" part number. Other variants in the 11LC020 family include SOIC (SN), MSOP (MS), TDFN (MN), SOT-23 (TT), and TO-92 (TO), but the -E/P designation specifically denotes the PDIP-8 package with automotive temperature rating and Pb-Free/RoHS compliance.
Is the 11LC020-E/P compatible with the UNI/O® bus protocol used in other Microchip EEPROMs?
Yes, the 11LC020-E/P fully implements the UNI/O® protocol defined in Microchip's DS22067J datasheet, including Manchester encoding, start header synchronization, MAK/NoMAK acknowledge sequences, and SCIO pin timing. It shares identical command set, device addressing (0xA0), and timing tolerances with other 11XX family members, ensuring interoperability in multi-device UNI/O® buses.
11LC020-E/P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
11LC020-E/P FAQ
1.How can I place an order for 11LC020-E/P through Aetrix?
Please submit a Request for Quotation (RFQ) for 11LC020-E/P 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/P reliable?
The price and inventory of 11LC020-E/P 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/P is usually 5 days.
3.What payment methods are accepted for 11LC020-E/P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 11LC020-E/P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 11LC020-E/P?
11LC020-E/P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 11LC020-E/P 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/P?
For technical support, including 11LC020-E/P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 11LC020-E/P requirements.
6.How does Aetrix verify that 11LC020-E/P is sourced from the original manufacturer or authorized distributors?
All 11LC020-E/P 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/P meets industry standards.
7.What is the process for return or replacement of 11LC020-E/P?
All 11LC020-E/P units undergo pre-shipment inspection (PSI). If there is an issue with 11LC020-E/P, 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/P part is unused and in its original packaging.
Return procedure for 11LC020-E/P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
11LC020-E/P Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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