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Microchip Technology 24LC014T-E/ST
- Part No.:
- 24LC014T-E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24LC014T-E/ST.pdf
- Description:
- IC EEPROM 1KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,740
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Product details
Overview
24LC014T-E/ST from Microchip Technology Inc. is a 1 Kbit I²C-compatible serial EEPROM organized as 128 × 8-bit memory, operating from 2.5V to 5.5V with 400 kHz clock support and hardware write protection via the WP pin. It delivers 1 mA typical active current, 1 µA standby current, and guarantees 1,000,000 erase/write cycles with >200 years data retention. It is used in embedded systems for storing calibration data, configuration settings, and device identity in industrial and automotive control modules.
For engineers reviewing the 24LC014T-E/ST datasheet, 24LC014T-E/ST pinout, 24LC014T-E/ST application, or 24LC014T-E/ST equivalent, key selection considerations include its 6-lead SOT-23 package, automotive-grade temperature range (–40°C to +125°C), I²C bus compatibility up to 400 kHz, and hardware write-protection capability - all critical for reliable nonvolatile storage in space-constrained, high-reliability environments.
Technical Context
The 24LC014T-E/ST implements a standard two-wire I²C interface with slave addressing using A0/A1/A2 pins (A2 omitted in SOT-23), supporting up to four devices on one bus. Its internal architecture includes an on-chip page buffer enabling up to 16-byte page writes and an auto-erase/self-timed write cycle completing in ≤5 ms.
It features Schmitt-trigger inputs on SDA/SCL for noise immunity, input hysteresis ≥0.05 VCC, and robust ESD protection (>4 kV). The device operates only in slave mode, requires external pull-up resistors on SDA/SCL, and uses acknowledge polling to detect write completion - no device response occurs during internal programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Kbit (128 × 8-bit), single-block organization - simplifies address management and eliminates bank switching logic. |
| Supply Voltage Range | 2.5V to 5.5V - compatible with standard 3.3V and 5V microcontroller I/O domains without level shifting. |
| Max Clock Frequency | 400 kHz - enables faster configuration reads/writes than 100 kHz legacy I²C, improving system boot and update latency. |
| Write Endurance | 1,000,000 cycles - supports frequent field updates such as logging, counter increments, or firmware parameter tuning. |
| Data Retention | >200 years at +25°C - ensures long-term integrity of stored calibration coefficients, serial numbers, or security keys across product lifetime. |
| Operating Temperature | –40°C to +125°C (Automotive E-grade) - qualified for under-hood, powertrain, and ADAS module deployment. |
| Write Protection | Hardware-enabled via WP pin tied to VCC - prevents accidental overwrites during power transients or firmware faults without software intervention. |
Pinout & Package
24LC014T-E/ST is housed in a 6-lead SOT-23 package (3.0 mm × 1.7 mm × 1.3 mm), optimized for space-constrained PCB layouts in automotive and portable electronics. Pin 1 is marked by laser indentation; pin 1 is SCL, pin 2 is SDA, pin 3 is VSS, pin 4 is A1, pin 5 is A0, and pin 6 is VCC. The WP pin is not implemented in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SCL) | Serial Clock Input | Synchronizes all I²C transactions; requires external pull-up; must be driven by master only. |
| 2 (SDA) | Bidirectional Data I/O | Open-drain interface requiring external pull-up; carries addresses, commands, and data; changes only during SCL low. |
| 3 (VSS) | Ground Reference | Primary return path for all internal circuitry; must be connected directly to system ground plane. |
| 4 (A1) | Chip Address Input | Part of 2-bit slave address (A1/A0); sets device I²C address (1010xx0) to enable multi-device bus sharing. |
| 5 (A0) | Chip Address Input | LSB of 2-bit slave address; combined with A1, allows up to four 24LC014T-E/ST devices on same I²C bus. |
| 6 (VCC) | Power Supply | Accepts 2.5V–5.5V; decoupling capacitor (0.1 µF) required near pin to suppress supply noise during write cycles. |
Key Features
| Feature | Design Value |
|---|---|
| Page Write Buffer (16 bytes) | Reduces I²C transaction overhead by batching writes - cuts bus time by ~85% vs. byte-write for 16-byte updates. |
| Self-Timed Write Cycle (≤5 ms) | Eliminates need for precise software timing delays; frees MCU resources during EEPROM programming. |
| Hardware Write Protection (WP) | Physically disables all writes when VCC is applied - prevents corruption during brown-out, reset, or firmware crash. |
| I²C Bus Compatibility (100/400 kHz) | Interoperates with legacy and high-speed controllers without protocol translation or clock stretching dependency. |
| ESD Protection (>4 kV HBM) | Withstands handling and board-level ESD events per JEDEC JS-001, reducing field failure risk in manufacturing and service. |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
Use Scenario: Storing factory-trimmed sensor offset/gain coefficients and linearization tables in pressure, temperature, or current sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed once at power-up; I²C read completes within 100 µs at 400 kHz. Use Value: Enables plug-and-play sensor replacement without reprogramming; maintains accuracy across temperature and lifetime drift. | Use Scenario: Holding door lock state history, mirror position presets, and lighting configuration in vehicle body control units. IC Role / Device Role / Timing Role: Persistent parameter storage updated infrequently (<100 writes/year); accessed via I²C during wake-up or user command. Use Value: Survives battery disconnect and thermal cycling; retains user preferences across 15+ year vehicle service life. |
| Medical Device Serial Numbering | Smart Energy Meter Firmware Settings |
Use Scenario: Recording unique device ID, manufacturing date, and regulatory compliance flags in portable diagnostic equipment. IC Role / Device Role / Timing Role: One-time or rare-write identity register; accessed during boot and diagnostics via I²C. Use Value: Meets FDA UDI traceability requirements; immune to accidental overwrite due to hardware WP pin. | Use Scenario: Storing tariff schedules, meter calibration constants, and communication parameters in ANSI C12.19-compliant smart meters. IC Role / Device Role / Timing Role: Secure configuration vault updated during firmware upgrades or utility provisioning via I²C. Use Value: Guarantees 200-year data retention under elevated ambient temperatures (up to +85°C operating). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C01C-SSHM-T | 1 Kbit, 1.7V–5.5V, 1 MHz I²C, 8-lead SOIC only - no SOT-23 option; lacks A2 pin but supports same 2-bit addressing. | Not qualified for automotive temp range; rated –40°C to +85°C only - unsuitable for under-hood use. | Select if higher-speed I²C (1 MHz) and SOIC packaging are acceptable, and automotive qualification is unnecessary. |
| BR24G01NUX-5TR | 1 Kbit, 1.6V–5.5V, 400 kHz I²C, 6-lead USON (2×2 mm) - smaller footprint than SOT-23; supports WP pin. | Industrial temp only (–40°C to +85°C); lower endurance (400k cycles); no automotive grade available. | Choose for ultra-compact designs where board area is critical and automotive qualification is not required. |
Compared with AT24C01C-SSHM-T and BR24G01NUX-5TR, the 24LC014T-E/ST uniquely combines SOT-23 packaging, automotive temperature rating, hardware write protection, and Microchip's proven 1M-cycle endurance - making it the only drop-in solution for space-limited, high-reliability automotive EEPROM applications.
Availability
24LC014T-E/ST is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, medical device serialization, and smart energy meter firmware storage requiring stable component supply across extended product lifecycles.
Supply support for 24LC014T-E/ST 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 leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC014T-E/ST belongs to Microchip's serial EEPROM product line, engineered specifically for robust, low-power, and pin-efficient nonvolatile storage in automotive, industrial, and medical systems demanding long-term data integrity.
FAQ
What is the maximum I²C clock frequency supported by the 24LC014T-E/ST?
The 24LC014T-E/ST supports up to 400 kHz I²C clock frequency when VCC is 1.8V or higher. At VCC < 1.8V, the maximum clock rate drops to 100 kHz. This dual-speed capability ensures interoperability with both legacy and modern microcontrollers while maintaining timing compliance across its full 2.5V–5.5V supply range.
Does the 24LC014T-E/ST have a write-protect pin, and how is it implemented?
No, the 24LC014T-E/ST does not include a WP pin - it is omitted in the 6-lead SOT-23 package. Hardware write protection is unavailable in this variant. To prevent unintended writes, system-level software control or external logic must manage write access, unlike 8-pin versions (e.g., 24LC014-I/P) which support WP functionality.
How many devices can share the same I²C bus with the 24LC014T-E/ST?
Up to four 24LC014T-E/ST devices can operate on a single I²C bus. This is enabled by its 2-bit hardware address (A1/A0), generating four unique slave addresses (1010000, 1010001, 1010010, 1010011). The A2 pin is absent in the SOT-23 package, limiting address combinations to two bits instead of three.
What is the write endurance and data retention specification for the 24LC014T-E/ST?
The 24LC014T-E/ST guarantees 1,000,000 erase/write cycles and >200 years of data retention at +25°C. These values are characterized per Microchip DS21809G and apply across its full automotive temperature range (–40°C to +125°C), ensuring long-term reliability in mission-critical applications like automotive ECUs and industrial controllers.
Is the 24LC014T-E/ST RoHS compliant and lead-free?
Yes, the 24LC014T-E/ST is Pb-free and RoHS compliant per Microchip's DS21809G documentation. It meets JEDEC J-STD-609 Category 1 matte tin (Sn) plating requirements, and the "T" in the part number explicitly denotes lead-free packaging. Full compliance documentation is available in Microchip's Pb-free conversion reports.
24LC014T-E/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24LC014T-E/ST FAQ
1.How can I place an order for 24LC014T-E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC014T-E/ST 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 24LC014T-E/ST reliable?
The price and inventory of 24LC014T-E/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC014T-E/ST is usually 5 days.
3.What payment methods are accepted for 24LC014T-E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC014T-E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC014T-E/ST?
24LC014T-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC014T-E/ST 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 24LC014T-E/ST?
For technical support, including 24LC014T-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC014T-E/ST requirements.
6.How does Aetrix verify that 24LC014T-E/ST is sourced from the original manufacturer or authorized distributors?
All 24LC014T-E/ST 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 24LC014T-E/ST meets industry standards.
7.What is the process for return or replacement of 24LC014T-E/ST?
All 24LC014T-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC014T-E/ST, 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 24LC014T-E/ST part is unused and in its original packaging.
Return procedure for 24LC014T-E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC014T-E/ST Tags
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AT24C02C-XHM-T
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