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Microchip Technology 24LC014HT-E/MNY
- Part No.:
- 24LC014HT-E/MNY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
24LC014HT-E/MNY.pdf
- Description:
- IC EEPROM 1KBIT I2C 1MHZ 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,037
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Product details
Overview
24LC014HT-E/MNY from Microchip Technology Inc. is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM with hardware write protection for the upper half-array (addresses 40h–7Fh), rated for automotive temperature range (−40°C to +125°C), 2.5V–5.5V supply, and 1 MHz max clock frequency. It supports page writes up to 16 bytes, delivers ≤1 μA standby current, and uses Schmitt-trigger inputs for noise immunity in automotive body control modules.
For engineers reviewing the 24LC014HT-E/MNY datasheet, 24LC014HT-E/MNY pinout, 24LC014HT-E/MNY application, or 24LC014HT-E/MNY equivalent, this page provides verified electrical specs, validated pin functions, confirmed automotive-grade timing compliance (1 MHz @ VCC ≥ 2.5V), and real-world use cases in vehicle subsystems requiring nonvolatile parameter storage with half-array lock.
Technical Context
The 24LC014HT-E/MNY implements a standard I²C slave interface with fixed 7-bit address prefix '1010', three programmable chip-select bits (A0–A2), and R/W bit control. Its internal architecture includes an on-chip page buffer, auto-erase/write logic, and voltage-threshold detection that disables writes below 1.5V.
Hardware write protection is strictly pin-controlled via WP: tied to VCC enables protection of addresses 40h–7Fh; tied to VSS disables protection entirely. Acknowledge polling is supported during write cycles, and the device does not generate ACK while internal programming is active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Kbit (128 × 8-bit), organized as single block - enables simple byte/page addressing without bank switching |
| Supply Voltage Range | 2.5V to 5.5V - compatible with automotive 3.3V and 5V rails; excludes 1.7V operation allowed in AA variant |
| Max Clock Frequency | 1 MHz - supports high-speed I²C communication only at VCC ≥ 2.5V; not valid at 1.7V–1.8V |
| Write Endurance | 1 million erase/write cycles - specified at 25°C, VCC = 5.5V; ensures long-term reliability in calibration data logging |
| Data Retention | 200 years - guaranteed minimum retention under specified operating conditions, critical for safety-critical firmware parameters |
| Standby Current | ≤1 μA - measured at VCC = 5.5V, all inputs at rail, enabling ultra-low-power sleep modes in always-on ECUs |
| Page Write Capacity | Up to 16 bytes per write cycle - reduces bus transactions vs. byte writes; requires software boundary checking to avoid wraparound |
Pinout & Package
24LC014HT-E/MNY is packaged in an 8-pin TDFN (2 mm × 3 mm, 0.5 mm pitch) with wettable flanks, marked "L14A" for E-temp grade and "0821" date code. The package meets AEC-Q100 Grade 2 requirements per Microchip's automotive qualification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Select Input | LSB of 3-bit slave address; sets bit A0 in control byte '1010 A2 A1 A0 R/W' - enables up to eight devices on one I²C bus |
| A1 | Chip Select Input | Mid-bit of 3-bit slave address; must be hard-wired to VSS or VCC - no floating or dynamic control permitted |
| A2 | Chip Select Input | MSB of 3-bit slave address; determines unique I²C address within multi-device topology |
| VSS | Ground Reference | Primary return path for all internal circuitry; requires low-impedance connection to system ground plane |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up (2 kΩ typical for 1 MHz); changes only during SCL low |
| SCL | Serial Clock Input | Master-generated clock signal; Schmitt-trigger input with 50 ns spike suppression - rejects EMI in automotive environments |
| WP | Hardware Write-Protect | Active-high enable for half-array lock (40h–7Fh); tied to VCC → protection enabled; tied to VSS → full array writable |
| VCC | Power Supply | 2.5V–5.5V nominal input; internal voltage detector disables write logic if VCC drops below 1.5V - prevents partial writes during brownout |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Temperature Rating | Qualified for −40°C to +125°C operation - validated across full range for engine bay and chassis-mounted modules |
| I²C Bus Compatibility | Fully compliant with standard-mode (100 kHz), fast-mode (400 kHz), and fast-mode plus (1 MHz) specifications - no protocol translation required |
| Half-Array Hardware Write Protection | Physically blocks writes to 64-byte upper segment (40h–7Fh) when WP = VCC - prevents accidental overwrites of critical calibration data |
| Noise Immunity Architecture | Integrated Schmitt-trigger inputs + 50 ns input filter - eliminates false Start/Stop detection on noisy vehicle harnesses |
| Page Write Buffer | 16-byte temporary storage - reduces I²C transaction count by up to 16× vs. byte writes, improving bus efficiency in parameter updates |
| Endurance & Retention | 1M cycles / 200-year data retention - specified and characterized per AEC-Q100 stress test conditions for automotive lifetime reliability |
Applications
| Body Control Module (BCM) | Instrument Cluster |
|---|---|
Use Scenario: Storing user-configurable settings (e.g., mirror position, seat memory, lighting preferences) that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with deterministic 5 ms max write cycle time and hardware lock for factory-set defaults. Use Value: Enables secure, field-updatable configuration without risk of corruption during vehicle power transitions or EMI events. |
Use Scenario: Retaining odometer values, service interval counters, and warning flag states after battery disconnect. IC Role / Device Role / Timing Role: Tamper-resistant data logger with 200-year retention and WP-enabled protection of mileage-critical sectors. Use Value: Meets OEM regulatory requirements for odometer integrity and eliminates need for backup capacitors or supercaps. |
| Electronic Power Steering (EPS) | Advanced Driver Assistance Systems (ADAS) Camera Module |
Use Scenario: Saving torque sensor calibration offsets and motor phase alignment data during end-of-line programming. IC Role / Device Role / Timing Role: Factory-programmable EEPROM with half-array lock - protects calibration constants while allowing runtime tuning of gain tables. Use Value: Supports zero-defect manufacturing traceability and field recalibration without exposing safety-critical coefficients to software overwrite. |
Use Scenario: Storing lens focus profiles, white balance matrices, and lens distortion correction coefficients per camera unit. IC Role / Device Role / Timing Role: High-reliability configuration store with 1 MHz I²C interface - enables rapid boot-time loading of camera-specific parameters. Use Value: Reduces cold-start latency by >120 ms vs. SPI EEPROM alternatives, meeting ADAS real-time imaging deadlines. |
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, industrial temp (−40°C to +85°C), no half-array WP | Lacks hardware write protection; suitable for non-safety-critical consumer or industrial systems | Select when cost sensitivity outweighs automotive qualification and array-level lock requirements |
| BR24G01NUX-3TR | 1 Kbit, 1.6V–5.5V, 1 MHz, automotive temp (−40°C to +125°C), software-controlled WP via command | Uses I²C command-based write protect instead of dedicated WP pin - requires firmware support and adds bus overhead | Choose when flexible, dynamic protection schemes are needed and WP pin routing is constrained on PCB |
Compared with AT24C01C-SSHM-T, 24LC014HT-E/MNY adds automotive qualification and hardware half-array lock but requires dedicated WP routing; versus BR24G01NUX-3TR, it offers simpler, pin-level protection without firmware dependency but lacks software-configurable lock granularity.
Availability
24LC014HT-E/MNY is available at Aetrix Electronics and suitable for automotive body electronics, instrument clusters, and ADAS subsystems requiring stable component supply with guaranteed AEC-Q100 compliance and long-term lifecycle support.
Supply support for 24LC014HT-E/MNY 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 24LCxxH family delivers automotive-grade serial EEPROMs optimized for robustness in harsh environments, targeting applications where data integrity, long-term retention, and hardware-enforced protection are mandatory.
FAQ
What is the maximum I²C clock frequency supported by the 24LC014HT-E/MNY?
The 24LC014HT-E/MNY supports up to 1 MHz I²C clock frequency, but only when VCC is ≥2.5V. At lower voltages (e.g., 1.7V–1.8V), the maximum clock rate drops to 100 kHz. This behavior is explicitly defined in the DS22077B datasheet AC Characteristics table and applies exclusively to the LC variant - the AA variant supports 100 kHz down to 1.7V.
Does the 24LC014HT-E/MNY have hardware write protection, and how is it implemented?
Yes, the 24LC014HT-E/MNY features hardware write protection controlled by the WP pin. When WP is tied to VCC, writes to memory addresses 40h–7Fh (upper 64 bytes) are blocked; tying WP to VSS disables protection entirely. This is a physical pin-level function - no register access or I²C command is involved, ensuring fail-safe protection even during firmware faults.
What package type and marking does the 24LC014HT-E/MNY use?
The 24LC014HT-E/MNY is supplied in an 8-pin TDFN package (2 mm × 3 mm, 0.5 mm pitch) with wettable flanks. Its top-side marking reads "L14A" (indicating 24LC014H, E-temp grade) followed by date code "0821" and traceability code "12F", per Microchip's packaging specification in DS22077B-page 14.
How many devices can share the same I²C bus with the 24LC014HT-E/MNY?
Up to eight 24LC014HT-E/MNY devices can operate on a single I²C bus using the A0, A1, and A2 address pins. Each pin must be hard-wired to either VSS or VCC to configure a unique 3-bit chip-select code, resulting in slave addresses ranging from 1010000 to 1010111 (binary). No external address decoding logic is required.
Is the 24LC014HT-E/MNY qualified for automotive applications, and what does the 'E' suffix indicate?
Yes, the 'E' in 24LC014HT-E/MNY denotes Microchip's Automotive (E) temperature grade, certified for operation from −40°C to +125°C and qualified per AEC-Q100. The 'T' indicates tape-and-reel packaging, and '/MNY' specifies the TDFN package variant. This full part number is explicitly listed in Microchip's official device selection table for automotive EEPROMs.
24LC014HT-E/MNY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- 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:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 400 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (2x3)
24LC014HT-E/MNY FAQ
1.How can I place an order for 24LC014HT-E/MNY through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC014HT-E/MNY 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 24LC014HT-E/MNY reliable?
The price and inventory of 24LC014HT-E/MNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC014HT-E/MNY is usually 5 days.
3.What payment methods are accepted for 24LC014HT-E/MNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC014HT-E/MNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC014HT-E/MNY?
24LC014HT-E/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC014HT-E/MNY 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 24LC014HT-E/MNY?
For technical support, including 24LC014HT-E/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC014HT-E/MNY requirements.
6.How does Aetrix verify that 24LC014HT-E/MNY is sourced from the original manufacturer or authorized distributors?
All 24LC014HT-E/MNY 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 24LC014HT-E/MNY meets industry standards.
7.What is the process for return or replacement of 24LC014HT-E/MNY?
All 24LC014HT-E/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 24LC014HT-E/MNY, 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 24LC014HT-E/MNY part is unused and in its original packaging.
Return procedure for 24LC014HT-E/MNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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