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Microchip Technology 24AA014H-I/ST
- Part No.:
- 24AA014H-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24AA014H-I/ST.pdf
- Description:
- IC EEPROM 1KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,361
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Product details
Overview
24AA014H-I/ST from Microchip Technology Inc. is a 1 Kbit I²C-compatible serial EEPROM organized as 128 × 8-bit memory, operating from 1.7V to 5.5V with industrial temperature range (−40°C to +85°C), 400 μA max active current, and hardware write-protection for addresses 40h–7Fh. It supports up to eight devices on one bus via A0–A2 address pins and is used in embedded system configuration storage, sensor calibration data retention, and firmware parameter backup.
For engineers reviewing the 24AA014H-I/ST datasheet, 24AA014H-I/ST pinout, 24AA014H-I/ST application, or 24AA014H-I/ST equivalent, this page delivers verified electrical specs, package mapping to 8-pin SOIC (150 mil), I²C timing compliance at 100/400 kHz, half-array write-protect behavior, and real-world use cases in industrial control and automotive subsystems.
Technical Context
The 24AA014H-I/ST implements a standard two-wire I²C slave interface with Schmitt-trigger inputs and output slope control to suppress noise and eliminate ground bounce. Its internal architecture includes an address pointer, page write buffer (16-byte capacity), and hardware write-protect circuitry tied to the WP pin state.
It uses CMOS EEPROM technology with auto-erase during self-timed write cycles (max 5 ms), supports acknowledge polling for bus efficiency, and enforces contiguous addressing across multiple devices using A0–A2 as high-order address bits (A8–A10) - though sequential reads cannot cross device boundaries.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Kbit (128 × 8-bit), single-block organization enabling simple byte/page access without bank switching |
| VCC Range | 1.7V to 5.5V - supports ultra-low-voltage microcontrollers and legacy 5V systems |
| I²C Clock Speed | Up to 400 kHz at VCC ≥ 1.8V - compatible with standard-mode I²C controllers without timing redesign |
| Write Endurance | 1 million erase/write cycles - suitable for frequent parameter updates in field-deployed equipment |
| Data Retention | Greater than 200 years at 25°C - ensures long-term reliability in unpowered storage applications |
| Standby Current | ≤1 μA at VCC = 5.5V - critical for battery-backed or energy-harvesting systems |
| Write Protection | Hardware-enabled for 64-byte block (40h–7Fh) when WP = VCC - prevents accidental overwrites of critical configuration data |
Pinout & Package
24AA014H-I/ST is supplied in an 8-pin SOIC (150 mil) package per Microchip's DS22077B specification. Pin numbering follows standard SOIC orientation with Pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Select Input | User-configurable address bit; sets LSB of 7-bit slave address (1010xxx0/1) to enable up to eight devices on one I²C bus |
| A1 | Chip Select Input | Second address bit; combined with A0 and A2, defines unique I²C slave address for multi-device topology |
| A2 | Chip Select Input | MSB of chip select; hardwired to VSS/VCC or driven by MCU GPIO to configure device identity |
| VSS | Ground Reference | Primary return path for all internal circuits; must be low-impedance connection to system ground plane |
| SDA | Serial Data I/O | Open-drain bidirectional line requiring external pull-up; carries address, command, and data; changes only during SCL low |
| SCL | Serial Clock Input | Master-generated clock synchronizing all transfers; Schmitt-trigger input rejects noise spikes up to 50 ns |
| WP | Write-Protect Control | Active-high enable for hardware protection of upper half-array (40h–7Fh); tied to VCC to lock critical settings |
| VCC | Power Supply | Single 1.7–5.5V supply; internal voltage detector disables writes below ~1.5V to prevent corruption |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 1.7V VCC - enables direct interfacing with 1.8V logic families and battery-powered sensors |
| Page Write Buffer | 16-byte buffer allows burst writes without repeated start conditions - reduces I²C bus overhead and improves update throughput |
| Noise Immunity | Schmitt-trigger inputs + 50 ns spike suppression - eliminates need for external RC filtering on noisy industrial PCBs |
| Endurance & Retention | 1M write cycles and >200-year data retention - validated for mission-critical logging in infrastructure monitoring systems |
| Pb-Free Compliance | RoHS-compliant matte tin finish - meets global environmental regulations without compromising solderability or reliability |
Applications
| Industrial Sensor Calibration Storage | Automotive Body Control Module (BCM) Parameter Backup |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for temperature, pressure, and humidity sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via I²C during power-up initialization and periodic recalibration routines. Use Value: Ensures measurement accuracy across product lifetime without requiring external backup power or complex FRAM management. | Use Scenario: Retaining user preferences (seat position, mirror angle, lighting profiles) and fault history logs in 12V automotive BCMs. IC Role / Device Role / Timing Role: Slave EEPROM on vehicle's body domain I²C bus, written during ignition-off sequence and read at next power-on. Use Value: Survives 15+ year vehicle service life with guaranteed data integrity despite wide thermal cycling (−40°C to +85°C). |
| Medical Device Configuration Archive | Smart Energy Meter Firmware Parameter Table |
Use Scenario: Holding regulatory-compliant default settings, calibration timestamps, and audit trail metadata in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure configuration store accessed only by authenticated firmware; WP pin hardwired to VCC to lock safety-critical defaults. Use Value: Prevents unauthorized modification of clinical parameters while supporting traceable recalibration events per ISO 13485 requirements. | Use Scenario: Storing tariff schedules, metering constants, and communication protocol keys in ANSI C12.19-compliant smart meters. IC Role / Device Role / Timing Role: I²C EEPROM interfaced to metrology SoC; updated infrequently but requiring absolute write-cycle reliability under brownout conditions. Use Value: 1.7V operation ensures valid writes during AC line sag; 1M endurance accommodates 10+ years of firmware updates and utility reprogramming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC014H-I/ST | Requires minimum 2.5V VCC; supports 1 MHz I²C clock; same pinout and memory map | Better suited for 3.3V/5V systems needing higher-speed writes; not usable in sub-2.5V designs | Select when system VCC ≥ 2.5V and 400 kHz I²C bandwidth is insufficient for parameter update latency targets |
| AT24C01D-SSHM-T | 1 Kbit I²C EEPROM from Microchip (formerly Atmel); 1.7–5.5V operation; 400 kHz max clock; identical 8-pin SOIC package | Same functional scope but different internal architecture; supports 1 MHz only in newer variants (not this part) | Drop-in alternative where second-source qualification is required; verify WP pin behavior and endurance spec match against design lifetime needs |
Compared with 24LC014H-I/ST and AT24C01D-SSHM-T, the 24AA014H-I/ST uniquely supports full functionality down to 1.7V while maintaining 400 kHz I²C compatibility and industrial temperature rating - making it optimal for ultra-low-power edge nodes where voltage headroom is constrained.
Availability
24AA014H-I/ST is available at Aetrix Electronics and suitable for industrial sensor calibration storage, automotive BCM parameter backup, and medical device configuration archive requiring stable component supply across extended production lifecycles.
Supply support for 24AA014H-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, and Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24AA014H belongs to Microchip's serial EEPROM product line, engineered for reliable nonvolatile data storage in space-constrained, low-power embedded systems across industrial, automotive, and medical applications.
FAQ
What is the minimum VCC voltage required for reliable operation of the 24AA014H-I/ST?
The 24AA014H-I/ST operates reliably down to 1.7V VCC across its full industrial temperature range (−40°C to +85°C). Below 1.8V, maximum I²C clock frequency is limited to 100 kHz per DS22077B. Internal voltage detection disables write operations if VCC drops below approximately 1.5V to prevent data corruption - a safeguard confirmed in the device's absolute maximum ratings and DC characteristics tables.
How does hardware write protection work on the 24AA014H-I/ST?
Hardware write protection on the 24AA014H-I/ST is controlled by the WP pin: when tied to VCC, addresses 40h–7Fh (64 bytes) are locked against write commands, though the device still acknowledges the write attempt. When WP is tied to VSS, full array access is enabled. This protection is independent of software commands and remains active during power transitions - a feature explicitly documented in Section 2.4 and Figure 6-2 of DS22077B.
Can the 24AA014H-I/ST be used in a 1 MHz I²C system?
No - the 24AA014H-I/ST is rated for up to 400 kHz I²C clock frequency at VCC ≥ 1.8V. The 1 MHz capability applies only to the 24LC014H variant (see Device Selection Table, DS22077B-page 1). Attempting 1 MHz operation with the 24AA014H-I/ST violates AC timing specifications including THIGH, TLOW, and TR/TF, risking data corruption or bus lockup.
What is the page size and maximum write buffer capacity of the 24AA014H-I/ST?
The 24AA014H-I/ST has a 16-byte page write buffer, allowing up to 16 bytes to be loaded before initiating the internal write cycle. Physical page boundaries align to 16-byte intervals (e.g., 00h–0Fh, 10h–1Fh), and crossing a boundary during page write causes wraparound within the current page - a behavior explicitly defined in Section 6.2 and Figure 6-2 of DS22077B.
Is the 24AA014H-I/ST RoHS compliant and lead-free?
Yes - the 24AA014H-I/ST is Pb-free and RoHS compliant, with matte tin (Sn) plating per JEDEC standards. This is stated in the Features section (DS22077B-page 1) and confirmed in Package Marking Information (DS22077B-page 14), where "3e" denotes the Pb-free JEDEC designator on applicable packages including the SOIC variant.
24AA014H-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:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24AA014H-I/ST FAQ
1.How can I place an order for 24AA014H-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA014H-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 24AA014H-I/ST reliable?
The price and inventory of 24AA014H-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 24AA014H-I/ST is usually 5 days.
3.What payment methods are accepted for 24AA014H-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA014H-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA014H-I/ST?
24AA014H-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA014H-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 24AA014H-I/ST?
For technical support, including 24AA014H-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA014H-I/ST requirements.
6.How does Aetrix verify that 24AA014H-I/ST is sourced from the original manufacturer or authorized distributors?
All 24AA014H-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 24AA014H-I/ST meets industry standards.
7.What is the process for return or replacement of 24AA014H-I/ST?
All 24AA014H-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24AA014H-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 24AA014H-I/ST part is unused and in its original packaging.
Return procedure for 24AA014H-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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