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Microchip Technology 24AA024HT-I/MNY
- Part No.:
- 24AA024HT-I/MNY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
24AA024HT-I/MNY.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:12,653
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Product details
Overview
24AA024HT-I/MNY from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory, operating from 1.7V to 5.5V with industrial temperature range (–40°C to +85°C). It features hardware write protection for the upper half-array (80h–FFh), 16-byte page write buffer, and Schmitt-trigger inputs for noise immunity. It is used in embedded systems for storing calibration data, configuration settings, and device identifiers.
For engineers reviewing the 24AA024HT-I/MNY datasheet, 24AA024HT-I/MNY pinout, 24AA024HT-I/MNY application, or 24AA024HT-I/MNY equivalent, this page delivers verified electrical specs, validated I²C timing compliance (100/400 kHz), confirmed package mapping to 8-pin TDFN, and real-world use cases in sensor modules and industrial controllers.
Technical Context
The 24AA024HT-I/MNY implements a standard two-wire I²C slave interface with fixed 7-bit address prefix '1010' and user-configurable A0–A2 pins enabling up to eight devices on one bus. Its internal address pointer auto-increments during sequential reads and wraps at FFh→00h.
Write operations support byte and page modes with self-timed erase/write cycles (max 5 ms), while hardware write protection is controlled solely by the WP pin state-tied to VCC to lock addresses 80h–FFh. The device uses an HV generator and EEPROM array with dedicated sense amp and write-protect circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8-bit), single-block organization - supports contiguous storage without bank switching |
| VCC operating range | 1.7V to 5.5V - enables direct interfacing with 1.8V, 3.3V, and 5V microcontrollers |
| I²C clock frequency | Up to 400 kHz (1.8V–5.5V) - compatible with standard-mode I²C buses; no external clock required |
| Write endurance | 1 million erase/write cycles - ensures long-term reliability in firmware update or logging applications |
| Data retention | 200 years at +25°C - guarantees nonvolatile storage integrity over product lifetime |
| Standby current | 1 μA max - minimizes power draw in battery-backed or energy-sensitive systems |
| Page write capacity | 16 bytes per page - reduces I²C transaction count and improves write throughput vs. byte writes |
Pinout & Package
24AA024HT-I/MNY is packaged in an 8-pin 2×3 mm TDFN (Thin Dual Flat No-lead) with wettable flanks, RoHS-compliant and Pb-free. Pin 1 is marked by a dot or beveled corner; top-side marking includes "AF1", "I", year/week code, and traceability characters.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip select input | User-configurable address bit; sets bit A9 in control byte - enables multi-device bus addressing |
| A1 | Chip select input | User-configurable address bit; sets bit A10 in control byte - allows up to eight devices on same I²C bus |
| A2 | Chip select input | User-configurable address bit; sets bit A11 in control byte - determines slave address (1010xxxR/W) |
| VSS | Ground reference | Return path for all internal logic and I/O - must be low-impedance connection to system ground plane |
| SDA | Serial data bidirectional line | Open-drain I²C data line requiring external pull-up; changes only during SCL low - supports ACK/NACK signaling |
| SCL | Serial clock input | Master-generated clock synchronizing all transfers; Schmitt-trigger input suppresses noise-induced false edges |
| WP | Hardware write-protect input | Active-high enable: tied to VCC locks addresses 80h–FFh; tied to VSS disables protection entirely |
| VCC | Power supply | 1.7V–5.5V supply input - powers internal HV generator, EEPROM array, and logic; decoupling capacitor required |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | 50 mV hysteresis (0.05 VCC) - rejects EMI spikes up to 50 ns, eliminating need for external filtering |
| Output slope control | Controlled rise/fall times (≤300 ns @ VCC ≥1.8V) - prevents ground bounce and signal integrity issues on shared PCB traces |
| Half-array hardware write protect | Locks 128 bytes (80h–FFh) via WP pin - protects critical firmware or calibration data from accidental overwrite |
| 100 kHz compatibility down to 1.7V | Guaranteed operation at 100 kHz even at 1.7V VCC - extends low-voltage usability beyond typical I²C limits |
| Factory QTP option | One-time programmable factory pre-load of user data - enables secure boot keys or unique device IDs at manufacturing |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
|
Use Scenario: Storing temperature compensation coefficients and sensor offset values in a wireless environmental monitor. IC Role / Device Role / Timing Role: Nonvolatile memory holding factory-trimmed calibration parameters accessed at power-up by MCU. Use Value: Enables field-deployed sensors to maintain ±0.1°C accuracy over 10+ years without recalibration. |
Use Scenario: Retaining patient-specific therapy settings and usage logs in a portable infusion pump. IC Role / Device Role / Timing Role: Secure, low-power EEPROM storing encrypted configuration and audit trail data. Use Value: Meets IEC 62304 Class B software requirements with 200-year data retention and 1M-cycle endurance. |
| Automotive Body Control Module | Smart Meter Firmware Storage |
|
Use Scenario: Holding door lock actuator position profiles and seat memory presets in a BCM. IC Role / Device Role / Timing Role: I²C slave storing user-defined preferences accessible across ignition cycles. Use Value: Supports extended temperature operation (–40°C to +85°C) and withstands automotive load dump transients. |
Use Scenario: Storing tariff tables, billing history, and communication credentials in a utility smart meter. IC Role / Device Role / Timing Role: Tamper-resistant memory with hardware write protection for regulatory-critical data. Use Value: WP pin hardwired to VCC prevents unauthorized modification of billing parameters during field service. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA02E48T-I/MNY | Same 2 Kbit capacity and TDFN-8 package, but includes EUI-48 MAC address pre-programmed in factory ROM | Required when IEEE 802.3-compliant unique node identification is needed (e.g., Ethernet-enabled IoT gateways) | Select 24AA02E48T-I/MNY only if MAC address persistence is mandatory; otherwise 24AA024HT-I/MNY offers lower cost and identical EEPROM functionality |
| AT24C02D-SSHM-T | 2 Kbit I²C EEPROM in SOIC-8; supports 1 MHz clock (vs. 400 kHz max for 24AA024HT-I/MNY); no half-array WP | Better suited for high-speed data logging where full-array write access and faster clocking are prioritized over hardware protection | Choose AT24C02D-SSHM-T for speed-critical designs; retain 24AA024HT-I/MNY when write protection of upper memory block is essential |
Compared with 24AA02E48T-I/MNY and AT24C02D-SSHM-T, the 24AA024HT-I/MNY uniquely balances industrial-grade voltage range (1.7V), hardware-based half-array write protection, and TDFN-8 space efficiency - making it optimal for compact, safety-aware embedded systems where selective data immutability matters.
Availability
24AA024HT-I/MNY is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 24AA024HT-I/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 microcontroller, analog, and Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24AA024H family is part of Microchip's serial EEPROM product line designed specifically for reliable, low-power, I²C-based nonvolatile storage in space-constrained and mission-critical embedded applications.
FAQ
What is the maximum I²C clock frequency supported by the 24AA024HT-I/MNY?
The 24AA024HT-I/MNY supports up to 400 kHz I²C clock frequency when VCC is between 1.8V and 5.5V. At VCC < 1.8V, maximum clock rate drops to 100 kHz. This dual-speed capability ensures interoperability with both legacy and modern I²C masters while maintaining robust noise immunity through Schmitt-trigger inputs.
How does hardware write protection work on the 24AA024HT-I/MNY?
Hardware write protection on the 24AA024HT-I/MNY is controlled by the WP pin: when tied to VCC, addresses 80h–FFh (128 bytes) are locked against write or erase operations; when tied to VSS, full-array write access is enabled. This protection is active independently of software commands and persists across power cycles.
Can the 24AA024HT-I/MNY be used with a 1.8V microcontroller?
Yes, the 24AA024HT-I/MNY operates from 1.7V to 5.5V and is fully compatible with 1.8V I/O systems. Its Schmitt-trigger inputs and 0.3 VCC/0.7 VCC logic thresholds ensure reliable signal recognition, and its 1 μA standby current minimizes impact on battery life in 1.8V portable designs.
What package type is used for the 24AA024HT-I/MNY?
The 24AA024HT-I/MNY uses an 8-pin 2×3 mm TDFN (Thin Dual Flat No-lead) package with wettable flanks, designated as MNY in Microchip's packaging nomenclature. This package provides high thermal performance, small footprint, and compatibility with automated optical inspection (AOI) in high-volume SMT assembly.
Does the 24AA024HT-I/MNY support page write operations?
Yes, the 24AA024HT-I/MNY supports page write operations with a 16-byte buffer. A single I²C transaction can write up to 16 contiguous bytes within the same physical page (aligned to 16-byte boundaries), reducing bus overhead and improving effective write throughput compared to individual byte writes.
24AA024HT-I/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:
- 2Kbit
- Memory Organization:
- 256 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-TDFN (2x3)
24AA024HT-I/MNY FAQ
1.How can I place an order for 24AA024HT-I/MNY through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA024HT-I/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 24AA024HT-I/MNY reliable?
The price and inventory of 24AA024HT-I/MNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA024HT-I/MNY is usually 5 days.
3.What payment methods are accepted for 24AA024HT-I/MNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA024HT-I/MNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA024HT-I/MNY?
24AA024HT-I/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA024HT-I/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 24AA024HT-I/MNY?
For technical support, including 24AA024HT-I/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA024HT-I/MNY requirements.
6.How does Aetrix verify that 24AA024HT-I/MNY is sourced from the original manufacturer or authorized distributors?
All 24AA024HT-I/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 24AA024HT-I/MNY meets industry standards.
7.What is the process for return or replacement of 24AA024HT-I/MNY?
All 24AA024HT-I/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 24AA024HT-I/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 24AA024HT-I/MNY part is unused and in its original packaging.
Return procedure for 24AA024HT-I/MNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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