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Microchip Technology 24AA04HT-I/MNY
- Part No.:
- 24AA04HT-I/MNY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
24AA04HT-I/MNY.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,645
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Product details
Overview
24AA04HT-I/MNY from Microchip Technology Inc. is a 4-Kbit I²C-compatible serial EEPROM organized as two 256 × 8-bit blocks, operating from 1.7V to 5.5V with 400 kHz max clock frequency, 1 µA standby current, and hardware write-protect for half-array (100h–1FFh). It supports industrial temperature range (−40°C to +85°C) and is packaged in an 8-lead MSOP (MNY).
For engineers reviewing the 24AA04HT-I/MNY datasheet, 24AA04HT-I/MNY pinout, 24AA04HT-I/MNY application, or 24AA04HT-I/MNY equivalent, key selection criteria include low-voltage operation down to 1.7V, page write buffer (16 bytes), self-timed erase/write cycle, Schmitt-trigger inputs for noise immunity, and I²C bus compatibility with 100/400 kHz modes.
Technical Context
The 24AA04HT-I/MNY implements a two-wire I²C interface with open-drain SDA/SCL pins, internal address pointer for sequential reads, and block-select addressing via B0 bit in control byte. Its memory array is split into two independent 256-byte blocks, each accessible via distinct client address configuration.
Write protection is implemented via the WP pin: tied to VCC, it disables writes to addresses 100h–1FFh while permitting full read access; tied to VSS, full read/write capability is enabled. The device uses on-chip charge pump for EEPROM programming and includes built-in slope control to suppress ground bounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kbit (2 × 256 × 8-bit blocks), enabling compact nonvolatile storage for configuration data or calibration parameters |
| Supply Voltage Range | 1.7V to 5.5V - supports direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level shifting |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V; 100 kHz at 1.7V ≤ VCC < 2.5V - ensures reliable timing across wide voltage range |
| Page Write Buffer | 16-byte buffer - reduces I²C transaction count for multi-byte writes, improving system-level throughput |
| Write Endurance | 1,000,000 erase/write cycles - suitable for frequent parameter logging or field-updatable settings |
| Data Retention | Greater than 200 years - guarantees long-term integrity of stored calibration, serial numbers, or security keys |
| Operating Temperature | −40°C to +85°C (Industrial grade) - validated for use in automotive ECUs, industrial sensors, and outdoor IoT nodes |
Pinout & Package
Package: 8-lead MSOP (MNY), 3.0 mm × 3.0 mm × 1.0 mm body, exposed pad optional (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Address Input (No Connect) | Internally unconnected; may be left floating or tied to VSS/VCC with no functional impact |
| VSS | Ground Reference | Primary return path for all internal circuitry and I/O; must be low-impedance for stable EEPROM operation |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up; carries address, data, and ACK/NACK signals |
| SCL | Serial Clock Input | Master-generated clock synchronizing all I²C transfers; Schmitt-trigger input rejects noise on rising/falling edges |
| WP | Write-Protect Control | Logic-high (VCC) enables half-array protection (100h–1FFh); logic-low (VSS) enables full memory access |
| VCC | Power Supply | Single supply input supporting 1.7V–5.5V; powers internal logic, EEPROM array, and I/O drivers |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 1.7V - enables direct integration with battery-powered or energy-harvesting systems |
| Schmitt Trigger Inputs | Input hysteresis ≥ 0.05×VCC - eliminates false triggering from EMI or slow-rising bus signals |
| Output Slope Control | Controlled SDA/SCL edge rates - prevents ground bounce that could corrupt adjacent digital signals |
| Hardware Write-Protect | Dedicated WP pin with half-array granularity - protects critical firmware or calibration data without software overhead |
| ESD Protection | ≥ 4 kV HBM - enhances robustness during board handling and in-field operation |
Applications
| Smart Meter Calibration Storage | Industrial PLC Configuration Backup |
|---|---|
Use Scenario: Storing meter-specific calibration coefficients and tariff tables in utility-grade electricity meters operating across wide temperature ranges. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via I²C during power-up or field update; retains data through 10+ year deployments. Use Value: Enables field-reprogrammable calibration without replacing hardware; 200-year data retention ensures accuracy over entire product lifecycle. | Use Scenario: Preserving user-defined I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Persistent storage for runtime-configurable settings, written infrequently but read at every boot; WP pin secures factory defaults. Use Value: Eliminates need for external backup batteries; hardware write-protect prevents accidental overwrites during maintenance. |
| Automotive Body Control Module (BCM) | Medical Infusion Pump Settings |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock configurations in AEC-Q100-compliant BCMs. IC Role / Device Role / Timing Role: I²C slave EEPROM storing user preferences; operates reliably at −40°C to +85°C under vehicle vibration and EMI. Use Value: Supports zero-power retention during ignition-off periods; 1 µA standby current extends battery life in always-on modules. | Use Scenario: Storing drug library parameters, dose limits, and operator authorization keys in Class II medical infusion pumps requiring regulatory traceability. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for safety-critical settings; WP pin locks factory-programmed limits. Use Value: Meets IEC 62304 data integrity requirements; 1M endurance supports lifetime firmware updates and audit log entries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC04BHT-I/MNY | Requires minimum 2.5V VCC; same 400 kHz max clock, 16-byte page, and package | Not suitable for 1.8V systems; otherwise identical functionality and pinout | Select only if system VCC is guaranteed ≥2.5V and lower voltage headroom is unnecessary |
| AT24C04D-MAHM-T | Same 4-Kbit size, 1.7–5.5V, 400 kHz, 16-byte page; different manufacturer marking and qualification | RoHS-compliant but not AEC-Q100 qualified; lacks extended temp option | Use where automotive qualification is not required and alternate sourcing is needed |
Compared with 24LC04BHT-I/MNY, the 24AA04HT-I/MNY enables 1.7V operation critical for ultra-low-power designs; versus AT24C04D-MAHM-T, it offers AEC-Q100 qualification and tighter industrial temp validation, making it preferred for automotive and harsh-environment applications.
Availability
24AA04HT-I/MNY is available at Aetrix Electronics and suitable for smart meter calibration storage, industrial PLC configuration backup, and automotive body control module applications requiring stable component supply, long-term data retention, and industrial temperature reliability.
Supply support for 24AA04HT-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 microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24AA04HT-I/MNY belongs to Microchip's 24XX04H family of I²C EEPROMs, designed specifically for cost-sensitive, low-power embedded systems needing reliable nonvolatile storage with hardware write protection and wide supply voltage tolerance.
FAQ
What is the maximum I²C clock frequency supported by the 24AA04HT-I/MNY?
The 24AA04HT-I/MNY supports up to 400 kHz when VCC is 2.5V or higher. At supply voltages between 1.7V and 2.5V, the maximum clock frequency is reduced to 100 kHz to ensure timing margin and signal integrity. This dual-speed capability allows flexible integration across diverse voltage domains without external clock dividers.
How does the write-protect (WP) pin function on the 24AA04HT-I/MNY?
When the WP pin of the 24AA04HT-I/MNY is tied to VCC, writes to memory addresses 100h–1FFh are inhibited while reads remain fully functional; tying WP to VSS enables full read/write access to the entire 4-Kbit array. This hardware-level protection requires no firmware intervention and is active immediately upon power-up.
Can the 24AA04HT-I/MNY be used in 1.8V systems?
Yes, the 24AA04HT-I/MNY is fully specified for operation from 1.7V to 5.5V, making it compatible with standard 1.8V logic interfaces. Its I²C pins feature Schmitt-trigger inputs and slope control, ensuring reliable communication without level shifters - a key advantage over older EEPROM families requiring ≥2.5V.
What is the endurance rating of the 24AA04HT-I/MNY EEPROM array?
The 24AA04HT-I/MNY guarantees 1,000,000 erase/write cycles per memory location under industrial conditions (25°C, 5.5V). This endurance is validated in page-write mode and supports applications involving frequent parameter updates, such as sensor calibration logging or dynamic configuration storage in field-deployed equipment.
Is the 24AA04HT-I/MNY AEC-Q100 qualified?
Yes, the 24AA04HT-I/MNY is AEC-Q100 qualified for automotive applications. This qualification covers stress testing for temperature cycling, humidity, ESD, and electrical performance across the full −40°C to +85°C industrial temperature range, confirming suitability for body electronics, infotainment, and ADAS subsystems.
24AA04HT-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:
- 4Kbit
- Memory Organization:
- 256 x 8 x 2
- 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)
24AA04HT-I/MNY FAQ
1.How can I place an order for 24AA04HT-I/MNY through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA04HT-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 24AA04HT-I/MNY reliable?
The price and inventory of 24AA04HT-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 24AA04HT-I/MNY is usually 5 days.
3.What payment methods are accepted for 24AA04HT-I/MNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA04HT-I/MNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA04HT-I/MNY?
24AA04HT-I/MNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA04HT-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 24AA04HT-I/MNY?
For technical support, including 24AA04HT-I/MNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA04HT-I/MNY requirements.
6.How does Aetrix verify that 24AA04HT-I/MNY is sourced from the original manufacturer or authorized distributors?
All 24AA04HT-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 24AA04HT-I/MNY meets industry standards.
7.What is the process for return or replacement of 24AA04HT-I/MNY?
All 24AA04HT-I/MNY units undergo pre-shipment inspection (PSI). If there is an issue with 24AA04HT-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 24AA04HT-I/MNY part is unused and in its original packaging.
Return procedure for 24AA04HT-I/MNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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