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Microchip Technology 24AA024HT-I/MS
- Part No.:
- 24AA024HT-I/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
24AA024HT-I/MS.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,365
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Product details
Overview
24AA024HT-I/MS 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/MS datasheet, 24AA024HT-I/MS pinout, 24AA024HT-I/MS application, or 24AA024HT-I/MS equivalent, this page delivers verified electrical specs, package mapping to MSOP-8, I²C timing compliance (100/400 kHz), endurance (1 million cycles), and real-world use context - all confirmed from Microchip's DS22102A datasheet.
Technical Context
The 24AA024HT-I/MS 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 supports current-address, random, and sequential read modes, and auto-increments during multi-byte reads.
Write operations include byte and page modes (up to 16 bytes per page), with self-timed internal erase/write cycles (max 5 ms) and acknowledge polling support. Hardware write protection is controlled solely by the WP pin state - tied to VCC to lock addresses 80h–FFh, or VSS to enable full-array writes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit), single-block organization - simplifies addressing and eliminates bank-switching logic. |
| Supply Voltage | 1.7V to 5.5V - enables direct interfacing with low-voltage MCUs (e.g., 1.8V I/O domains) without level shifters. |
| I²C Clock Rate | Up to 400 kHz at VCC ≥ 1.8V - supports standard-mode I²C timing with compatible rise/fall time constraints (TR/TF ≤ 300 ns). |
| Write Endurance | 1 million erase/write cycles - suitable for frequent logging or field-updatable parameter storage. |
| Data Retention | 200 years at +25°C - ensures long-term reliability of stored calibration or security keys across product lifetime. |
| Standby Current | Max 1 μA at VCC = 5.5V - critical for battery-powered IoT nodes and energy-harvesting applications. |
| Page Write Buffer | 16 bytes - reduces I²C transaction count and host CPU overhead when updating contiguous configuration blocks. |
Pinout & Package
24AA024HT-I/MS is housed in an 8-pin MSOP package (3.0 mm × 3.0 mm, 0.65 mm pitch), optimized for space-constrained PCB layouts while maintaining hand-solderability and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Select Input | User-configurable address bit; sets bit A0 of 7-bit slave address (1010xxx) - enables up to eight devices on same I²C bus. |
| A1 | Chip Select Input | User-configurable address bit; sets bit A1 of slave address - required for multi-device bus topology and contiguous memory expansion. |
| A2 | Chip Select Input | User-configurable address bit; sets bit A2 of slave address - determines unique I²C address (e.g., 0xA0–0xA7) per device. |
| VSS | Ground Reference | Primary return path for all internal circuitry; must be connected to system ground plane with low-impedance trace. |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up resistor (2–10 kΩ); carries address, command, and data bits per I²C protocol. |
| SCL | Serial Clock Input | Master-generated clock signal; synchronizes all data transfers; Schmitt-trigger input rejects noise below hysteresis threshold (≥0.05×VCC). |
| WP | Hardware Write-Protect | Active-high enable: tie to VCC to lock upper half-array (80h–FFh); tie to VSS for full write access - no software overhead required. |
| VCC | Power Supply | Single supply input (1.7–5.5V); powers EEPROM core, interface logic, and HV generator for write/erase operations. |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 1.7V - eliminates need for voltage regulators in 1.8V/2.5V microcontroller systems. |
| Noise Immunity | Schmitt-trigger inputs + 50 ns spike suppression on SDA/SCL - prevents false Start/Stop detection on electrically noisy boards. |
| Output Slope Control | Controlled SDA fall time - suppresses ground bounce and EMI during high-speed transitions. |
| Half-Array Write Protection | Hardware-enforced lock on addresses 80h–FFh - protects critical firmware parameters without firmware intervention. |
| Factory Programming | QTP (Quadrant Time Programming) option available - enables pre-programming of MAC addresses or security keys before board assembly. |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in smart pressure transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed once at power-up via I²C; no timing-critical interaction during runtime. Use Value: Enables plug-and-play sensor replacement with zero field recalibration; leverages 200-year data retention and 1M-cycle endurance for lifetime recalibration logs. |
Use Scenario: Holding patient-specific therapy parameters and device serial numbers in portable infusion pumps. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for regulatory-compliant device identity and usage history; WP pin hardwired to protect serial number block. Use Value: Meets IEC 62304 data integrity requirements; 1.7V operation ensures reliable write during brown-out conditions common in battery-backed medical systems. |
| Automotive Body Control Module | Consumer Appliance Settings |
Use Scenario: Saving user preferences (e.g., mirror position, seat memory) and diagnostic trouble code (DTC) history in vehicle BCMs. IC Role / Device Role / Timing Role: I²C slave supporting burst writes during ignition-off save routines; operates across –40°C to +85°C ambient. Use Value: Industrial temp grade and 1.7V min supply ensure robustness during cold cranking and stop-start cycles; page write reduces save latency. |
Use Scenario: Retaining cooking mode presets, child lock status, and firmware version in smart ovens and washing machines. IC Role / Device Role / Timing Role: Low-power configuration store interfaced to 3.3V MCU; WP pin tied to VSS for full-field updates during service mode. Use Value: 1 μA standby current extends mainboard sleep-mode battery life; MSOP-8 footprint minimizes layout area on cost-sensitive white-goods PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC024HT-I/MS | Requires minimum 2.5V VCC; supports 1 MHz I²C clock; identical pinout and memory map. | Not suitable for sub-2.5V systems; preferred where higher-speed I²C bursts improve system responsiveness. | Select only if host MCU operates ≥2.5V and requires >400 kHz I²C throughput. |
| AT24C02-MAHM-T | Same 2 Kbit capacity and MSOP-8 package; supports 1.7V–5.5V but lacks half-array hardware write protection. | Relies on software-based locking; less secure for critical configuration blocks requiring tamper resistance. | Choose when cost sensitivity outweighs need for hardware-level write protection. |
Compared with 24AA024HT-I/MS, the 24LC024HT-I/MS offers faster I²C speed at higher voltage, while the AT24C02-MAHM-T trades hardware write protection for broader vendor availability - making 24AA024HT-I/MS optimal for low-voltage, safety-critical, or tamper-resistant designs.
Availability
24AA024HT-I/MS is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control modules requiring stable component supply, long-term data retention, and extended temperature operation.
Supply support for 24AA024HT-I/MS 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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24AA024H family is designed for reliable, low-power nonvolatile data storage in resource-constrained embedded systems - emphasizing voltage flexibility, noise immunity, and hardware-level data protection.
FAQ
What is the minimum operating voltage for the 24AA024HT-I/MS?
The 24AA024HT-I/MS operates down to 1.7V, enabling direct integration with 1.8V microcontrollers and low-power sensor nodes without level-shifting circuitry. This specification is guaranteed across the full industrial temperature range (–40°C to +85°C), as confirmed in Microchip's DS22102A datasheet Section 1.0.
Does the 24AA024HT-I/MS support standard I²C timing at 400 kHz?
Yes, the 24AA024HT-I/MS fully complies with standard-mode I²C timing at 400 kHz when VCC ≥ 1.8V, including validated setup/hold times (e.g., TSU:DAT ≥ 100 ns) and rise/fall time limits (TR/TF ≤ 300 ns). These values are explicitly listed in Table 1-2 of the DS22102A datasheet.
How does hardware write protection work on the 24AA024HT-I/MS?
The 24AA024HT-I/MS uses the WP pin to enable hardware write protection: when tied to VCC, addresses 80h–FFh (upper 128 bytes) are locked against writes; tying WP to VSS disables protection. This is implemented entirely in silicon - no firmware or command sequence is required, as detailed in Section 2.4 and 6.3 of DS22102A.
What package type is used for the 24AA024HT-I/MS?
The 24AA024HT-I/MS is packaged in an 8-pin MSOP (Mini Small Outline Package) with 3.0 mm × 3.0 mm body and 0.65 mm lead pitch. Pinout matches standard MSOP-8 footprints, and mechanical dimensions are specified in DS22102A Page 14–15 under "8-Lead MSOP".
Can multiple 24AA024HT-I/MS devices share the same I²C bus?
Yes - up to eight 24AA024HT-I/MS devices can coexist on one I²C bus using the A0, A1, and A2 pins to configure unique 7-bit slave addresses (1010xxx). Each pin must be hardwired to VSS or VCC; floating connections are not permitted, as stated in Section 2.3 of DS22102A.
24AA024HT-I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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-MSOP
24AA024HT-I/MS FAQ
1.How can I place an order for 24AA024HT-I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA024HT-I/MS 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/MS reliable?
The price and inventory of 24AA024HT-I/MS 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/MS is usually 5 days.
3.What payment methods are accepted for 24AA024HT-I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA024HT-I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA024HT-I/MS?
24AA024HT-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA024HT-I/MS 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/MS?
For technical support, including 24AA024HT-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA024HT-I/MS requirements.
6.How does Aetrix verify that 24AA024HT-I/MS is sourced from the original manufacturer or authorized distributors?
All 24AA024HT-I/MS 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/MS meets industry standards.
7.What is the process for return or replacement of 24AA024HT-I/MS?
All 24AA024HT-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with 24AA024HT-I/MS, 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/MS part is unused and in its original packaging.
Return procedure for 24AA024HT-I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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