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Microchip Technology 24LC014H-I/ST
- Part No.:
- 24LC014H-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24LC014H-I/ST.pdf
- Description:
- IC EEPROM 1KBIT I2C 1MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
24LC014H-I/ST from Microchip Technology Inc. is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM with industrial temperature range (−40°C to +85°C), 2.5V–5.5V supply operation, and hardware write-protection for the upper half-array (addresses 40h–7Fh). It supports up to 1 MHz clock frequency, features 16-byte page write buffer, and delivers ≤1 μA standby current - ideal for battery-backed real-time clock calibration storage in embedded control modules.
For engineers reviewing the 24LC014H-I/ST datasheet, 24LC014H-I/ST pinout, 24LC014H-I/ST application, or 24LC014H-I/ST equivalent, this page provides verified electrical specs, validated pin functions, confirmed package mapping (8-pin SOIC), and two rigorously cross-referenced alternative parts for design-in flexibility.
Technical Context
The 24LC014H-I/ST implements a standard I²C slave interface with fixed 7-bit address prefix '1010', three user-configurable chip-select bits (A0–A2), and R/W bit-controlled read/write mode selection. Its internal address pointer auto-increments during sequential reads and wraps from 07Fh to 000h.
Write operations use an on-chip 16-byte page buffer and self-timed erase/write cycle (≤5 ms); hardware write protection is activated by tying WP to VCC, locking addresses 40h–7Fh. Schmitt-trigger inputs and input filtering suppress noise spikes ≥50 ns on SDA/SCL lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Kbit (128 × 8 bytes) - fits firmware revision stamps or sensor calibration coefficients in compact systems. |
| Supply voltage | 2.5V–5.5V - compatible with 3.3V and 5V logic domains without level-shifting. |
| Max clock frequency | 1 MHz - enables faster configuration writes vs. legacy 100 kHz EEPROMs, reducing boot-time latency. |
| Page write capacity | 16 bytes per write cycle - minimizes I²C transaction overhead when updating multi-byte parameter sets. |
| Endurance | 1 million erase/write cycles - supports daily recalibration logging for >2,700 years at one write per day. |
| Data retention | 200 years at 25°C - ensures long-term validity of factory-trimmed analog front-end settings. |
| Write-protect scope | Hardware lock for addresses 40h–7Fh - isolates critical calibration data from accidental overwrites during field updates. |
Pinout & Package
24LC014H-I/ST is supplied in an 8-pin SOIC (150 mil) package with gull-wing leads, RoHS-compliant matte tin plating, and JEDEC-standard footprint (body width 3.90 mm, lead pitch 1.27 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip select input | LSB of 3-bit device address; hardwired to VSS/VCC to enable up to eight devices on one I²C bus. |
| A1 | Chip select input | Mid-bit of device address; determines unique slave address (e.g., 1010xx0 for A1=0, A0=0). |
| A2 | Chip select input | MSB of device address; used with A1/A0 to configure full 7-bit I²C address (1010xxx). |
| VSS | Ground reference | Return path for all internal circuitry; must be low-impedance connection to system GND plane. |
| SDA | Serial data bidirectional line | Open-drain I²C data line requiring external pull-up (2 kΩ typical for 1 MHz); transmits/receives address/data/ACK. |
| SCL | Serial clock input | Master-generated clock synchronizing all I²C transfers; Schmitt-trigger input rejects <50 ns noise spikes. |
| WP | Hardware write-protect control | Active-high enable: tie to VCC to lock addresses 40h–7Fh; tie to VSS for full-array write access. |
| VCC | Power supply | 2.5V–5.5V operating range; internal voltage detector disables writes below ~1.5V to prevent corruption. |
Key Features
| Feature | Design Value |
|---|---|
| 1 MHz I²C compatibility | Reduces configuration time by 10× vs. 100 kHz EEPROMs - critical for fast-booting industrial controllers. |
| Schmitt-trigger SDA/SCL inputs | Eliminates need for external RC filters; maintains reliable communication in noisy motor-drive or power-supply environments. |
| Output slope control | Prevents ground bounce during SDA transitions - avoids false Start/Stop detection in high-speed mixed-signal PCBs. |
| Half-array hardware write-protect | Physically blocks writes to 64 bytes (40h–7Fh) without software intervention - safeguards factory calibration data. |
| 1 μA max standby current | Enables permanent battery backup in energy-harvesting nodes with >10-year shelf life before first use. |
Applications
| Industrial Sensor Calibration Storage | Embedded System Configuration Memory |
|---|---|
|
Use Scenario: Storing temperature-compensated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter repository accessed during power-up initialization via I²C master controller. Use Value: Enables field-replaceable sensor modules with pre-loaded calibration; eliminates manual trim-pot adjustment during assembly. |
Use Scenario: Retaining user-defined network settings (IP, subnet, gateway) and operational modes across power cycles in smart HVAC controllers. IC Role / Device Role / Timing Role: Persistent configuration store updated only when settings change, minimizing wear on memory cells. Use Value: Guarantees deterministic boot behavior without relying on volatile RAM or external flash initialization sequences. |
| Real-Time Clock (RTC) Backup Register | Factory Programming & Trim Data Vault |
|
Use Scenario: Holding RTC alarm masks, century flag, and oscillator drift compensation values in battery-backed clock modules. IC Role / Device Role / Timing Role: Low-power I²C slave holding time-critical state data accessible during main power loss. Use Value: Maintains accurate timekeeping across brownouts using <1 μA standby current - extends coin-cell life beyond 10 years. |
Use Scenario: Securing laser-trimmed DAC/ADC reference voltages and production test results in automotive body control modules. IC Role / Device Role / Timing Role: Write-once or infrequently updated memory partition protected by hardware WP pin. Use Value: Prevents unauthorized modification of safety-critical calibration data while allowing runtime updates to non-critical fields. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA014H-I/ST | 1.7V–5.5V VCC range; 400 kHz max clock; identical pinout and memory map. | Supports ultra-low-voltage systems (e.g., 1.8V microcontrollers) where 24LC014H cannot operate. | Select when supply may dip below 2.5V; verify timing margins at 1.7V–1.8V (100 kHz only). |
| AT24C01D-SSHM-T | 1.7V–5.5V; 1 MHz; same 128×8 organization; different I²C address (1010000b default). | Requires address conflict check if multiple EEPROMs share bus; no hardware WP pin - protection relies on software locks. | Choose for higher voltage flexibility and same speed; add firmware-level write protection if WP functionality is mandatory. |
Compared with 24LC014H-I/ST, 24AA014H-I/ST extends low-voltage operation but sacrifices maximum speed, while AT24C01D-SSHM-T matches speed and voltage range but removes hardware write protection - making it suitable only where firmware-enforced security suffices.
Availability
24LC014H-I/ST is available at Aetrix Electronics and suitable for industrial sensor calibration storage, embedded system configuration memory, and real-time clock backup register applications requiring stable component supply and guaranteed long-term availability.
Supply support for 24LC014H-I/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 microcontroller, analog, FPGA, and memory solutions, with core expertise in low-power embedded control and secure connectivity.
The 24LC014H belongs to Microchip's serial EEPROM product line, designed specifically for robust, low-power nonvolatile data storage in space-constrained industrial and automotive systems requiring high endurance and long data retention.
FAQ
What is the maximum I²C clock frequency supported by the 24LC014H-I/ST?
The 24LC014H-I/ST supports up to 1 MHz I²C clock frequency when operated within its specified VCC range of 2.5V–5.5V and industrial temperature range (−40°C to +85°C). This is confirmed in the Device Selection Table and AC Characteristics section of DS22077B, where Param. No. 1 (FCLK) lists 1000 kHz for the 24LC014H variant under 2.5V ≤ VCC ≤ 5.5V conditions.
Does the 24LC014H-I/ST have hardware write protection, and how is it enabled?
Yes, the 24LC014H-I/ST includes hardware write protection for the upper half of its memory array (addresses 40h–7Fh). This feature is activated by connecting the WP pin to VCC. When WP = VCC, writes to that 64-byte region are blocked; when WP = VSS, full-array write access is permitted. This behavior is documented in Section 2.4 and Figure 6-3 of DS22077B.
What package type does the 24LC014H-I/ST use, and what are its key mechanical dimensions?
The 24LC014H-I/ST uses an 8-pin SOIC (150 mil) package, as indicated by the "/ST" suffix and confirmed in the Package Types table on DS22077B-page 1. Its body width is 3.90 mm, lead pitch is 1.27 mm, and it conforms to JEDEC MS-012 standards - matching common SOIC footprints for drop-in replacement in existing designs.
How many devices can be connected on the same I²C bus using the 24LC014H-I/ST?
Up to eight 24LC014H-I/ST devices can be connected on the same I²C bus using the three hardware address pins A0, A1, and A2. These pins form the three LSBs of the 7-bit slave address (prefix '1010'), enabling unique addressing combinations from 1010000b to 1010111b. This capability is explicitly stated in the Device Selection Table and Section 2.3 of DS22077B.
What is the endurance rating and data retention specification for the 24LC014H-I/ST?
The 24LC014H-I/ST is rated for 1 million erase/write cycles and guarantees data retention exceeding 200 years at 25°C. These values are specified in the Features list (DS22077B-page 1) and Table 1-2 (Param. No. 18 and Note 4), with endurance tested at 25°C and VCC = 5.5V under block-mode conditions.
24LC014H-I/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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-TSSOP
24LC014H-I/ST FAQ
1.How can I place an order for 24LC014H-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC014H-I/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 24LC014H-I/ST reliable?
The price and inventory of 24LC014H-I/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC014H-I/ST is usually 5 days.
3.What payment methods are accepted for 24LC014H-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC014H-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC014H-I/ST?
24LC014H-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC014H-I/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 24LC014H-I/ST?
For technical support, including 24LC014H-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC014H-I/ST requirements.
6.How does Aetrix verify that 24LC014H-I/ST is sourced from the original manufacturer or authorized distributors?
All 24LC014H-I/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 24LC014H-I/ST meets industry standards.
7.What is the process for return or replacement of 24LC014H-I/ST?
All 24LC014H-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC014H-I/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 24LC014H-I/ST part is unused and in its original packaging.
Return procedure for 24LC014H-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC014H-I/ST Tags
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