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Microchip Technology 24LC014HT-E/SN
- Part No.:
- 24LC014HT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC014HT-E/SN.pdf
- Description:
- IC EEPROM 1KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,453
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Product details
Overview
24LC014HT-E/SN 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 clock support. It features Schmitt-trigger inputs, slope-controlled outputs, 16-byte page write buffer, and 1 million erase/write cycles.
For engineers reviewing the 24LC014HT-E/SN datasheet, 24LC014HT-E/SN pinout, 24LC014HT-E/SN application, or 24LC014HT-E/SN equivalent, key selection criteria include automotive-grade reliability, half-array hardware write protection, 1 MHz I²C timing compliance at VCC ≥ 2.5V, low standby current (≤1 μA), and TSSOP-8 package compatibility with space-constrained embedded control modules.
Technical Context
The 24LC014HT-E/SN 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 auto-incrementing address pointer, on-chip page buffer (16 bytes), and HV generator for EEPROM programming.
Write protection is implemented via dedicated WP pin: tied to VCC, it disables writes to addresses 40h–7Fh; tied to VSS, full array access is enabled. The device uses Schmitt-trigger inputs and output slope control to suppress noise and eliminate ground bounce in electrically noisy automotive environments.
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 logic |
| Supply Voltage Range | 2.5V to 5.5V - supports direct connection to 3.3V or 5V automotive microcontroller I/O rails |
| Max Clock Frequency | 1 MHz (at VCC ≥ 2.5V) - doubles data throughput vs. 400 kHz devices in time-critical boot/config storage |
| Page Write Capacity | Up to 16 bytes per write cycle - reduces I²C transaction count and host CPU overhead during firmware parameter updates |
| Endurance | 1 million erase/write cycles - ensures >10 years of daily reconfiguration in telematics or ADAS calibration storage |
| Data Retention | 200 years at +25°C - guarantees nonvolatile storage integrity across full product lifecycle without refresh |
| Temperature Range | −40°C to +125°C (Automotive E-grade) - qualified for under-hood and infotainment module deployment |
Pinout & Package
24LC014HT-E/SN is packaged in 8-pin TSSOP (3.0 mm × 4.4 mm, 0.65 mm pitch), RoHS-compliant and Pb-free. Pin functions are identical across SOIC, TSSOP, MSOP, PDIP, and TDFN variants per Microchip DS22077B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Select Input | LSB of 3-bit slave address; hardwired to VSS/VCC to select one of up to eight devices on same I²C bus |
| A1 | Chip Select Input | Mid-bit of slave address; enables contiguous 8 Kbit expansion when multiple 24LC014HT-E/SN devices share bus |
| A2 | Chip Select Input | MSB of slave address; determines unique 7-bit I²C address (1010xxxR/W) for multi-device topology |
| VSS | Ground Reference | Return path for all internal circuitry; must be low-impedance connection to minimize noise coupling into SDA/SCL |
| SDA | Bidirectional Data Line | Open-drain I²C data line requiring external pull-up (2 kΩ typical for 1 MHz); transmits addresses, commands, and data |
| SCL | Clock Input | Master-generated I²C clock; synchronizes all read/write transfers; Schmitt-trigger input rejects <50 ns noise spikes |
| WP | Hardware Write-Protect | Active-high enable: ties to VCC to lock addresses 40h–7Fh; prevents accidental overwrites of critical calibration data |
| VCC | Power Supply | 2.5V–5.5V input; internal voltage detector disables writes if VCC drops below 1.5V, preventing partial writes during brownout |
Key Features
| Feature | Design Value |
|---|---|
| 1 MHz I²C Compatibility | Enables faster configuration loading in automotive ECUs where boot time reduction is critical |
| Half-Array Hardware Write Protection | Physically blocks writes to upper 64 bytes (40h–7Fh) via WP pin-no firmware overhead or security keys required |
| Schmitt Trigger Inputs + 50 ns Spike Suppression | Ensures robust operation on noisy vehicle buses without external filtering components |
| 16-Byte Page Write Buffer | Reduces I²C bus occupancy by 87% vs. byte-write for 16-byte parameter sets (e.g., sensor calibration tables) |
| 1 μA Max Standby Current (I-temp) | Minimizes quiescent power draw in always-on modules such as CAN gateway wake-up logic |
Applications
| Automotive Body Control Module | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing door lock actuator calibration offsets and seat position memory across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile parameter retention IC with automotive-grade temperature and endurance specs. Use Value: WP pin permanently protects factory-set calibration values (40h–7Fh) while allowing field updates to user preferences (00h–3Fh). |
Use Scenario: Holding I/O mapping tables and communication protocol settings in modular automation controllers. IC Role / Device Role / Timing Role: I²C-configurable EEPROM providing persistent storage for runtime-modifiable configuration data. Use Value: 1 MHz clock support enables fast reconfiguration during PLC firmware updates without extending boot delay. |
| Medical Infusion Pump Settings | Smart Energy Meter Calibration |
Use Scenario: Retaining drug library parameters, dose limits, and alarm thresholds after power loss. IC Role / Device Role / Timing Role: Safety-critical nonvolatile memory with verified 200-year data retention and 1M-cycle endurance. Use Value: Half-array write protection isolates FDA-approved defaults (40h–7Fh) from clinician-adjustable values (00h–3Fh), meeting IEC 62304 traceability requirements. |
Use Scenario: Storing meter-specific metrology coefficients and tariff schedules updated via HAN interface. IC Role / Device Role / Timing Role: Tamper-resistant configuration storage with hardware-level write disable for regulatory calibration constants. Use Value: WP pin physically prevents unauthorized modification of revenue-grade calibration data (40h–7Fh), satisfying ANSI C12.22 security mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C01D-SSHM-T | 1 Kbit, 1.7V–5.5V, 400 kHz max, industrial temp only (−40°C to +85°C), no WP pin | Lacks hardware write protection and automotive temperature rating | Select only for cost-sensitive consumer applications where WP and E-grade are unnecessary |
| BR24G01FJ-3GE2 | 1 Kbit, 1.6V–5.5V, 1 MHz, automotive grade, but uses 4-wire SPI interface instead of I²C | Requires different MCU peripheral driver and PCB routing; incompatible bus protocol | Choose only when system already uses SPI peripherals and I²C bus is congested |
Compared with AT24C01D-SSHM-T and BR24G01FJ-3GE2, the 24LC014HT-E/SN uniquely combines automotive qualification, I²C 1 MHz speed, and hardware-based half-array write protection in a drop-in TSSOP-8 footprint-making it optimal for safety-critical, field-updatable embedded systems requiring both performance and data integrity assurance.
Availability
24LC014HT-E/SN is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLCs, medical infusion pumps, and smart energy meters requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for 24LC014HT-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 leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC014HT-E/SN belongs to Microchip's automotive-qualified serial EEPROM product line, designed specifically for reliable, low-power, tamper-resistant configuration and calibration storage in harsh-environment electronic control units.
FAQ
What is the maximum I²C clock frequency supported by the 24LC014HT-E/SN?
The 24LC014HT-E/SN supports up to 1 MHz I²C clock frequency when VCC is 2.5V or higher, as specified in Table 1-2 of the DS22077B datasheet. This is distinct from the 24AA014H variant, which is limited to 400 kHz above 1.8V. The 1 MHz capability enables faster parameter loading in time-sensitive automotive applications.
How does the WP pin function on the 24LC014HT-E/SN?
On the 24LC014HT-E/SN, the WP (Write-Protect) pin is a hardware-level control: when tied to VCC, it disables write operations to memory addresses 40h through 7Fh (upper 64 bytes); when tied to VSS, full array write access is enabled. This provides physical, firmware-independent protection for critical calibration data.
Is the 24LC014HT-E/SN compatible with standard I²C protocols?
Yes, the 24LC014HT-E/SN is fully I²C™-compatible and implements standard I²C signaling including Start/Stop conditions, ACK/NACK handshaking, and 7-bit slave addressing (1010xxxR/W). It supports standard modes (100 kHz, 400 kHz) and extended mode (1 MHz) per its automotive-grade specification.
What package type is used for the 24LC014HT-E/SN?
The 24LC014HT-E/SN uses an 8-pin TSSOP package (3.0 mm × 4.4 mm, 0.65 mm pitch), as confirmed by Microchip's packaging documentation in DS22077B-page 14 and marking table. This compact, surface-mount package supports automated assembly and meets automotive vibration and thermal cycling requirements.
Does the 24LC014HT-E/SN support page write operations?
Yes, the 24LC014HT-E/SN supports page write operations with a 16-byte buffer. After sending the control byte and word address, the host can transmit up to 16 bytes before issuing a Stop condition; the device then executes a self-timed internal write cycle. Page writes reduce I²C transaction overhead by up to 94% compared to individual byte writes.
24LC014HT-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:
- 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-SOIC
24LC014HT-E/SN FAQ
1.How can I place an order for 24LC014HT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC014HT-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 24LC014HT-E/SN reliable?
The price and inventory of 24LC014HT-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 24LC014HT-E/SN is usually 5 days.
3.What payment methods are accepted for 24LC014HT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC014HT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC014HT-E/SN?
24LC014HT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC014HT-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 24LC014HT-E/SN?
For technical support, including 24LC014HT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC014HT-E/SN requirements.
6.How does Aetrix verify that 24LC014HT-E/SN is sourced from the original manufacturer or authorized distributors?
All 24LC014HT-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 24LC014HT-E/SN meets industry standards.
7.What is the process for return or replacement of 24LC014HT-E/SN?
All 24LC014HT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC014HT-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 24LC014HT-E/SN part is unused and in its original packaging.
Return procedure for 24LC014HT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC014HT-E/SN Tags
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