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Microchip Technology 24LC014HT-I/SN
- Part No.:
- 24LC014HT-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC014HT-I/SN.pdf
- Description:
- IC EEPROM 1KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,974
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Product details
Overview
24LC014HT-I/SN 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 1 MHz clock support, 1 μA standby current, and hardware write-protection for addresses 40h–7Fh. It is used in embedded systems for storing calibration data, configuration settings, and firmware parameters in industrial controllers and sensor nodes.
For engineers reviewing the 24LC014HT-I/SN datasheet, 24LC014HT-I/SN pinout, 24LC014HT-I/SN application, or 24LC014HT-I/SN equivalent, key selection criteria include VCC range (2.5–5.5V), 1 MHz I²C timing compliance, half-array hardware write-protect, 8-pin SOIC package compatibility, and automotive-grade temperature operation (–40°C to +125°C).
Technical Context
The 24LC014HT-I/SN implements a true I²C slave interface with Schmitt-trigger inputs, slope-controlled outputs, and internal address pointer auto-increment for sequential reads. Its control logic supports standard and fast-mode I²C protocols up to 1 MHz under VCC ≥ 2.5V, with acknowledge polling for write-cycle completion detection.
It features a 16-byte page write buffer, self-timed erase/write cycles (max 5 ms), and a dedicated WP pin that enables hardware-level protection of the upper 64 bytes (40h–7Fh) when pulled high. The device uses on-chip HV generation and EEPROM array architecture optimized for >1 million endurance cycles and >200 years data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Kbit (128 × 8-bit), single-block organization enabling simple address mapping and contiguous byte access |
| VCC Operating Range | 2.5V to 5.5V - supports direct connection to 3.3V and 5V logic rails without level shifting |
| Max Clock Frequency | 1 MHz - enables high-throughput configuration writes in time-critical boot sequences |
| Write Endurance | 1 million erase/write cycles - sufficient for daily parameter updates over 27+ years of field operation |
| Data Retention | 200 years at 25°C - ensures long-term reliability in unattended infrastructure monitoring devices |
| Standby Current | 1 μA maximum - minimizes battery drain in always-on IoT edge sensors and backup power systems |
| Hardware Write Protect | WP pin enables permanent lock of upper 64 bytes (40h–7Fh) - prevents accidental overwrite of critical calibration constants |
Pinout & Package
24LC014HT-I/SN is supplied in an 8-pin SOIC (150 mil) package with gull-wing leads, JEDEC MS-012AC compliant, body size 3.9 mm × 4.9 mm × 1.75 mm, and Pb-free matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Select Input | User-configurable I²C slave address bit A0 - sets LSB of 7-bit address (1010A2A1A0) to enable up to eight devices on one bus |
| A1 | Chip Select Input | User-configurable I²C slave address bit A1 - determines unique device addressing in multi-EEPROM configurations |
| A2 | Chip Select Input | User-configurable I²C slave address bit A2 - MSB of chip select bits; must be hard-wired to VSS or VCC before operation |
| VSS | Ground Reference | Primary return path for all internal circuitry and I/O leakage currents; requires low-impedance PCB connection |
| SDA | Serial Data I/O | Open-drain bidirectional bus line - requires external pull-up resistor (2 kΩ typical for 1 MHz) and supports I²C ACK/NACK signaling |
| SCL | Serial Clock Input | Master-generated clock input - synchronizes all read/write transfers; includes Schmitt trigger for noise immunity |
| WP | Write-Protect Control | Active-high hardware lock - when tied to VCC, disables writes to memory addresses 40h–7Fh; no software override |
| VCC | Power Supply | Primary supply rail (2.5–5.5V) - powers EEPROM core, I/O buffers, and HV generator; includes brown-out detection below 1.5V |
Key Features
| Feature | Design Value |
|---|---|
| I²C Fast Mode Support | 1 MHz clock rate at VCC ≥ 2.5V - reduces firmware update time by 2.5× vs. 400 kHz devices in production programming |
| Page Write Buffer | 16-byte buffer - enables atomic storage of multi-byte configuration structures (e.g., 12-byte sensor offset + gain set) without intermediate reads |
| Schmitt Trigger Inputs | Hysteresis ≥ 0.05 VCC on SDA/SCL - rejects >50 ns noise spikes, eliminating external RC filtering in electrically noisy motor-control environments |
| Output Slope Control | Controlled SDA fall time ≤ 300 ns - prevents ground bounce during high-speed switching, ensuring signal integrity on shared PCB return planes |
| Address Line Flexibility | A0–A2 pins support 8-device daisy-chain - allows scalable memory expansion to 8 Kbits using identical firmware across variants |
Applications
| Industrial PLC Configuration Storage | Automotive Sensor Calibration |
|---|---|
Use Scenario: Storing I/O module mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Non-volatile configuration register - retains settings across AC power loss and firmware resets; accessed via I²C during controller boot and runtime reconfiguration. Use Value: Enables field-upgradable machine logic without hardware modification; 1 million endurance supports daily parameter tuning during commissioning and maintenance. |
Use Scenario: Holding temperature-compensated offset and sensitivity coefficients for MEMS pressure sensors in engine control units (ECUs). IC Role / Device Role / Timing Role: Calibration data vault - write-protected upper memory block (40h–7Fh) stores factory-trimmed values; lower block stores field-adjusted corrections. Use Value: Prevents corruption of certified calibration data during ECU reflashing; automotive-grade temp range (–40°C to +125°C) ensures reliability under hood conditions. |
| Medical Device Usage Logs | Smart Energy Meter Firmware Parameters |
Use Scenario: Recording patient session timestamps, therapy duration, and error events in portable infusion pumps requiring FDA 21 CFR Part 11 audit trails. IC Role / Device Role / Timing Role: Tamper-resistant event logger - WP pin tied to VCC locks critical log headers; sequential writes use internal address pointer for deterministic write ordering. Use Value: Meets regulatory requirements for non-volatile, write-protected audit data storage; 200-year retention guarantees log integrity over product lifetime. |
Use Scenario: Storing tariff schedules, metering constants, and communication keys in ANSI C12.19-compliant smart electricity meters deployed in utility grids. IC Role / Device Role / Timing Role: Secure configuration store - isolated from main MCU flash; accessed only during secure boot and OTA updates via authenticated I²C transactions. Use Value: Enables field updates of billing logic without exposing sensitive keys to host processor; 1 μA standby current extends battery backup life during grid outages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC014T-I/OT | Same 1 Kbit capacity and 1 MHz speed, but in SOT-23-6 package (5-pin); lacks A0/A1/A2 pins - fixed slave address only | Single-device systems where board space is constrained and multi-drop bus is unnecessary | Select when footprint reduction outweighs bus scalability; verify fixed address (1010000b) avoids I²C conflicts |
| AT24C01D-SSHM-T | 1 Kbit EEPROM with 1 MHz I²C, but rated for industrial temp only (–40°C to +85°C); no hardware write-protect pin - protection implemented via software lock bits | Cost-sensitive consumer electronics where automotive qualification is not required | Choose for non-automotive designs needing lower unit cost; confirm software-based protection meets security requirements |
Compared with 24LC014HT-I/SN, the 24LC014T-I/OT sacrifices bus flexibility for ultra-compact packaging, while the AT24C01D-SSHM-T trades automotive qualification and hardware write-protection for lower procurement cost in commercial applications.
Availability
24LC014HT-I/SN is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, medical instrumentation, and smart energy metering requiring stable component supply across extended temperature ranges and long lifecycle commitments.
Supply support for 24LC014HT-I/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 microcontroller, analog, and Flash-IP solutions, serving industrial, automotive, and communications markets with high-reliability silicon and development tools.
The 24LC014H family delivers automotive-qualified serial EEPROMs designed specifically for mission-critical data storage in harsh environments, emphasizing write endurance, data retention, and hardware-level security.
FAQ
What is the maximum I²C clock frequency supported by the 24LC014HT-I/SN?
The 24LC014HT-I/SN supports up to 1 MHz I²C clock frequency when VCC is between 2.5V and 5.5V. This is specified in the AC Characteristics table (Param. No. 1, FCLK) of the DS22077B datasheet. At lower voltages (<2.5V), the device defaults to 400 kHz or 100 kHz operation depending on VCC level. The 1 MHz capability enables faster configuration loading in time-sensitive applications such as automotive ECU boot sequences.
How does the hardware write-protection feature work on the 24LC014HT-I/SN?
The 24LC014HT-I/SN uses the WP pin to enable hardware write-protection for memory addresses 40h–7Fh (upper 64 bytes). When WP is tied to VCC, writes to this half-array are blocked regardless of software commands; only addresses 00h–3Fh remain writable. If WP is tied to VSS, full-array write access is enabled. This protection is implemented in silicon and cannot be overridden by firmware, making it ideal for safeguarding factory-calibrated data.
What package type is used for the 24LC014HT-I/SN?
The 24LC014HT-I/SN is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) with 150 mil body width, per JEDEC MS-012AC. The "SN" suffix in the part number explicitly denotes this SOIC package. Pin layout matches standard 8-pin SOIC footprints, supporting automated assembly and compatibility with legacy PCB designs using similar Microchip EEPROMs.
Does the 24LC014HT-I/SN support page write operations, and what is the buffer size?
Yes, the 24LC014HT-I/SN supports page write operations with a 16-byte buffer. After sending the control byte and word address, the master can transmit up to 16 data bytes before issuing a Stop condition; the device then executes a single self-timed write cycle. Page writes improve efficiency when storing multi-byte parameters (e.g., 12-byte calibration vectors), reducing I²C transaction overhead compared to individual byte writes.
What is the temperature rating for the 24LC014HT-I/SN, and what does the "T-I" suffix indicate?
The "T-I" suffix in 24LC014HT-I/SN indicates Automotive (E) temperature grade with Industrial (I) marking - however, per the Device Selection Table in DS22077B, the 24LC014H variant is qualified for –40°C to +125°C (Automotive E grade). The "I" in the suffix reflects marking convention, not reduced spec; the device meets full AEC-Q100 stress test requirements for under-hood automotive applications.
24LC014HT-I/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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC014HT-I/SN FAQ
1.How can I place an order for 24LC014HT-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC014HT-I/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-I/SN reliable?
The price and inventory of 24LC014HT-I/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-I/SN is usually 5 days.
3.What payment methods are accepted for 24LC014HT-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC014HT-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC014HT-I/SN?
24LC014HT-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC014HT-I/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-I/SN?
For technical support, including 24LC014HT-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC014HT-I/SN requirements.
6.How does Aetrix verify that 24LC014HT-I/SN is sourced from the original manufacturer or authorized distributors?
All 24LC014HT-I/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-I/SN meets industry standards.
7.What is the process for return or replacement of 24LC014HT-I/SN?
All 24LC014HT-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC014HT-I/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-I/SN part is unused and in its original packaging.
Return procedure for 24LC014HT-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC014HT-I/SN Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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