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Microchip Technology 24AA00T-I/OT
- Part No.:
- 24AA00T-I/OT
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SC-74A, SOT-753
- Datasheet:
-
24AA00T-I/OT.pdf
- Description:
- IC EEPROM 128BIT I2C SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:39,045
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Product details
Overview
24AA00T-I/OT from Microchip Technology Inc. is a 128-bit (16 × 8) I²C-compatible serial EEPROM designed for low-voltage embedded storage of calibration data, device IDs, and manufacturing traceability information. It operates from 1.8 V to 5.5 V, draws only 500 µA typical read current and 100 nA typical standby current, and supports 100 kHz / 400 kHz clock rates in industrial temperature range (–40°C to +85°C).
For engineers reviewing the 24AA00T-I/OT datasheet, 24AA00T-I/OT pinout, 24AA00T-I/OT application, or 24AA00T-I/OT equivalent, this page delivers verified electrical specs, SOT-23 package mapping, I²C timing compliance, endurance (1M cycles), and real-world use context - all confirmed against Microchip DS20001178J.
Technical Context
The 24AA00T-I/OT implements a true 2-wire I²C slave interface with Schmitt-trigger inputs and output slope control to suppress noise and eliminate ground bounce. Its internal address pointer enables current-address, random, and sequential read modes without external addressing logic.
It uses on-chip high-voltage generation for EEPROM programming, features self-timed erase/write cycles (typ. 3 ms), and includes VCC threshold detection that disables write operations below 1.5 V - ensuring data integrity during brown-out conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 128 bits (16 × 8), sufficient for small ID strings, calibration offsets, or boot configuration flags |
| Supply voltage | 1.8 V to 5.5 V - enables direct interfacing with 1.8 V, 2.5 V, 3.3 V, and 5 V microcontrollers |
| I²C clock rate | Up to 400 kHz - supports fast host polling while maintaining compatibility with legacy 100 kHz systems |
| Write cycle time | Typ. 3 ms, max. 4 ms - defines minimum interval between successive byte writes; impacts firmware timeout design |
| Endurance | 1 million erase/write cycles - ensures long-term reliability in field-updatable parameter storage |
| Data retention | Greater than 200 years at +85°C - guarantees nonvolatile storage integrity over full product lifecycle |
| Standby current | 100 nA typical - critical for battery-powered devices where quiescent power dominates lifetime budget |
Pinout & Package
24AA00T-I/OT is housed in a Pb-free, RoHS-compliant 5-lead SOT-23 package (Microchip drawing C04-091D [OT]), measuring 2.80 mm × 1.60 mm × 1.30 mm. The exposed pad is not electrically connected and may be left floating or tied to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | SCL | Serial clock input - synchronous timing reference for I²C transactions; requires external pull-up |
| 2 | VSS | Ground reference - common return path for all internal circuitry and I²C bus termination |
| 3 | SDA | Open-drain bidirectional data line - carries addresses, commands, and data; requires external pull-up |
| 4 | NC | No connect - internally unconnected; must remain unconnected on PCB |
| 5 | VCC | Power supply input - supplies core logic and EEPROM array; bypass capacitor recommended |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation down to 1.8 V | Enables direct integration into energy-harvesting and ultra-low-power sensor nodes without level-shifting |
| Schmitt-trigger inputs on SDA/SCL | Rejects bus noise up to 5% VCC hysteresis, eliminating need for external RC filtering in noisy environments |
| Output slope control | Prevents ground bounce-induced glitches during SDA transitions, improving signal integrity on shared PCB planes |
| Factory programming option | Allows pre-loading of unique identifiers or calibration constants during wafer sort or assembly - reduces post-manufacture programming steps |
| ESD protection >4 kV HBM | Meets IEC 61000-4-2 Level 2 requirements, enabling robust handling in manual assembly and field service |
Applications
| Smart Sensor Calibration | Industrial PLC Configuration |
|---|---|
|
Use Scenario: A MEMS pressure sensor stores factory-trimmed offset/gain coefficients and temperature compensation parameters at final test. IC Role / Device Role / Timing Role: Nonvolatile parameter storage element accessed once per power-on reset via I²C by the sensor's MCU. Use Value: Eliminates external calibration hardware; enables one-time programming and 200-year data retention across operating temperature range. |
Use Scenario: An industrial programmable logic controller retains user-defined I/O mapping tables and alarm thresholds across power cycles. IC Role / Device Role / Timing Role: Persistent configuration memory updated infrequently but read on every startup and fault recovery. Use Value: Guarantees deterministic boot behavior and avoids reconfiguration after unexpected power loss. |
| Medical Device Traceability | Consumer Appliance Identity Storage |
|
Use Scenario: A Class II medical infusion pump logs serial number, manufacturing date, and regulatory certification codes for audit and recall tracking. IC Role / Device Role / Timing Role: Secure, tamper-resistant identity register written once during final assembly and read during regulatory diagnostics. Use Value: Meets FDA UDI requirements with 1M-cycle endurance and >200-year retention - no field rewrites needed. |
Use Scenario: A smart washing machine stores model-specific motor control profiles and firmware version history. IC Role / Device Role / Timing Role: Read-only configuration store accessed during initialization to select optimal drive algorithms. Use Value: Enables single-hardware platform support for multiple SKUs without BOM changes or firmware branching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC00T-I/OT | Requires minimum 2.5 V VCC; higher active current (1 mA typical read) | Not suitable for 1.8 V systems; otherwise identical pinout, timing, and memory map | Select only if system VCC ≥ 2.5 V and lower standby current is not required |
| AT24C01A-PU | 1 Kbit capacity (128 × 8); same 1.8–5.5 V range; 1 M cycle endurance; different I²C address (0x50) | Provides 8× more storage; requires software address update; larger PDIP-8 footprint | Choose when future expansion headroom or multi-device addressing is needed; not drop-in compatible due to pin count and package |
Compared with 24AA00T-I/OT, the 24LC00T-I/OT offers identical form factor but sacrifices 1.8 V operation and ultra-low standby current, while the AT24C01A-PU trades SOT-23 compactness for greater density and requires PCB layout revision.
Availability
24AA00T-I/OT is available at Aetrix Electronics and suitable for smart sensor calibration, industrial PLC configuration, and medical device traceability requiring stable component supply across extended product lifecycles.
Supply support for 24AA00T-I/OT 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 memory solutions, headquartered in Chandler, Arizona, with global design, manufacturing, and sales operations.
The 24AA00 family was engineered specifically for cost-sensitive, space-constrained applications needing minimal nonvolatile storage - targeting embedded systems where 128 bits reliably hold essential identity or calibration data.
FAQ
What is the maximum I²C clock frequency supported by the 24AA00T-I/OT?
The 24AA00T-I/OT supports up to 400 kHz I²C clock frequency when VCC is 4.5 V to 5.5 V, and 100 kHz when VCC is 1.8 V to 4.5 V. This dual-speed capability ensures interoperability with both legacy and high-speed controllers while maintaining timing margin under low-voltage operation. The 24AA00T-I/OT does not require external clock stretching or arbitration logic.
Does the 24AA00T-I/OT require external pull-up resistors on SDA and SCL lines?
Yes, the 24AA00T-I/OT has open-drain SDA and SCL terminals and requires external pull-up resistors. Typical values are 10 kΩ for 100 kHz operation and 2 kΩ for 400 kHz. Pull-ups must connect to the same VCC domain as the 24AA00T-I/OT to ensure valid logic levels and avoid bus contention. No internal pull-ups are present.
How many times can the 24AA00T-I/OT be rewritten before failure?
The 24AA00T-I/OT is rated for more than 1 million erase/write cycles per memory location, verified through characterization (not 100% tested). This endurance exceeds typical field requirements for calibration storage or device ID logging. Wear leveling is unnecessary due to the fixed 16-byte address space and infrequent update pattern.
Is factory programming available for the 24AA00T-I/OT?
Yes, Microchip offers factory programming for the 24AA00T-I/OT, allowing pre-loading of unique serial numbers, calibration coefficients, or regulatory identifiers during wafer sort or final test. This eliminates post-solder programming steps and reduces manufacturing cycle time. Contact Aetrix Electronics for ordering codes and lead-time details specific to 24AA00T-I/OT.
What is the purpose of the NC pin on the 24AA00T-I/OT SOT-23 package?
Pin 4 of the 24AA00T-I/OT is designated NC (No Connect) and is internally unconnected. It must remain unconnected on the PCB - neither tied to VCC, VSS, nor left floating with parasitic coupling. This pin exists for mechanical symmetry and package compatibility across the 24XX00 family; routing or soldering to it may cause functional instability or ESD vulnerability.
24AA00T-I/OT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 128bit
- Memory Organization:
- 16 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 4ms
- Access Time:
- 3500 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
24AA00T-I/OT FAQ
1.How can I place an order for 24AA00T-I/OT through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA00T-I/OT 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 24AA00T-I/OT reliable?
The price and inventory of 24AA00T-I/OT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA00T-I/OT is usually 5 days.
3.What payment methods are accepted for 24AA00T-I/OT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA00T-I/OT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA00T-I/OT?
24AA00T-I/OT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA00T-I/OT 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 24AA00T-I/OT?
For technical support, including 24AA00T-I/OT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA00T-I/OT requirements.
6.How does Aetrix verify that 24AA00T-I/OT is sourced from the original manufacturer or authorized distributors?
All 24AA00T-I/OT 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 24AA00T-I/OT meets industry standards.
7.What is the process for return or replacement of 24AA00T-I/OT?
All 24AA00T-I/OT units undergo pre-shipment inspection (PSI). If there is an issue with 24AA00T-I/OT, 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 24AA00T-I/OT part is unused and in its original packaging.
Return procedure for 24AA00T-I/OT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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