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Microchip Technology 24AA02T-I/OT16KVAO
- Part No.:
- 24AA02T-I/OT16KVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SC-74A, SOT-753
- Datasheet:
-
24AA02T-I/OT16KVAO.pdf
- Description:
- IC EEPROM 2KBIT I2C SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,217
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Product details
Overview
24AA02T-I/OT16KVAO from Microchip Technology Inc. is a 2-Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory with hardware write-protection, 1.7V–5.5V operation, and industrial temperature range (–40°C to +85°C). It supports up to 400 kHz clock frequency, features an 8-byte page write buffer, and delivers ≤1 µA standby current for ultra-low-power embedded systems including sensor nodes and IoT edge devices.
For engineers reviewing the 24AA02T-I/OT16KVAO datasheet, 24AA02T-I/OT16KVAO pinout, 24AA02T-I/OT16KVAO application, or 24AA02T-I/OT16KVAO equivalent, key selection criteria include its I²C address compatibility (fixed 1010xxx0/1), WP-controlled full-array write protection, 5 ms max page write time, Schmitt-trigger noise immunity on SDA/SCL, and availability in 5-lead SC-70 package with wettable flank capability.
Technical Context
The 24AA02T-I/OT16KVAO implements a two-wire I²C interface with fixed 7-bit device address (1010xxx) and R/W bit, supporting byte and page write modes with automatic internal erase/write timing. Its Address Pointer increments automatically during sequential reads and wraps within 256-byte address space.
It uses CMOS EEPROM array architecture with on-chip HV generator, page latches, and Y/X decoders. The device incorporates Schmitt-trigger inputs and output slope control to suppress ground bounce and bus noise-critical for reliable operation in electrically noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit), sufficient for MAC address storage, calibration data, or small firmware configuration tables |
| Interface | I²C-compatible two-wire serial bus, compatible with standard I²C host controllers without protocol translation |
| VCC Range | 1.7V–5.5V, enabling direct integration into 1.8V, 3.3V, and 5V systems without level-shifting |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V; 100 kHz at 1.7V ≤ VCC < 2.5V-ensures timing compliance across low-voltage battery-powered designs |
| Write Cycle Time | ≤5 ms per byte or page, enabling rapid nonvolatile updates without blocking host CPU for extended periods |
| Endurance & Retention | 1 million erase/write cycles and >200 years data retention-qualified for long-life industrial deployments |
| ESD Protection | >4 kV HBM, providing robustness against handling and board-level electrostatic discharge events |
Pinout & Package
24AA02T-I/OT16KVAO is packaged in a 5-lead SC-70 (Microchip designation LT) surface-mount package with wettable flanks for automated optical inspection (AOI) of solder joints. Pin 1 is marked by a beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL | Serial Clock Input | Asynchronous master-generated clock synchronizing all I²C transfers; requires external pull-up resistor |
| VSS | Ground Reference | Primary return path for all internal circuitry and I/O; must be low-impedance connection to system GND plane |
| SDA | Bidirectional Data I/O | Open-drain line shared across I²C bus; requires external pull-up; changes only during SCL low except for Start/Stop |
| WP | Hardware Write-Protect Input | Logic-high disables all writes to entire memory array (00h–FFh); logic-low enables full read/write access |
| VCC | Power Supply | Single supply input supporting 1.7V–5.5V; powers EEPROM core, interface logic, and charge pump |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 1.7V VCC, enabling use in energy-harvesting and coin-cell–powered applications |
| Page Write Buffer | 8-byte buffer allows burst programming of contiguous addresses in single Stop-initiated cycle, reducing bus occupancy |
| Schmitt Trigger Inputs | Input hysteresis ≥0.05×VCC rejects high-frequency noise on SDA/SCL lines without external filtering components |
| Self-Timed Write Cycle | No external timing control needed; internal oscillator manages erase/write duration, simplifying host firmware |
| Factory Programming Option | Pre-programming available for MAC addresses or unique identifiers-reducing post-manufacturing test steps |
Applications
| MAC Address Storage | Industrial Sensor Calibration |
|---|---|
Use Scenario: Storing IEEE 802.3-compliant 48-bit MAC address in networked edge devices such as smart meters or gateway modules. IC Role / Device Role / Timing Role: Nonvolatile storage element holding immutable hardware identity; accessed once at boot via I²C before network stack initialization. Use Value: Eliminates need for external MAC programming step; ensures deterministic, factory-assigned uniqueness with zero runtime overhead. | Use Scenario: Saving temperature-compensated offset/gain coefficients for analog sensor front-ends in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Persistent configuration register accessed during sensor self-test or power-up calibration sequence. Use Value: Enables field-replaceable sensor modules with calibrated performance without reprogramming host MCU firmware. |
| Firmware Configuration Flags | Secure Boot Key Storage |
Use Scenario: Holding user-configurable operational flags (e.g., debug mode enable, communication protocol selection) in medical diagnostic equipment. IC Role / Device Role / Timing Role: Runtime-accessible persistent settings store updated via I²C during service mode; read at startup to configure system behavior. Use Value: Supports regulatory-compliant field updates without firmware reflash, maintaining traceability and audit logs. | Use Scenario: Storing cryptographic keys used in secure boot chain verification for industrial HMIs with AEC-Q100 qualification requirements. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory for root-of-trust keys; WP pin hardwired to VCC after provisioning to prevent overwrite. Use Value: Meets automotive-grade security requirements while leveraging same footprint as standard EEPROMs in existing PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC02B-I/OT | Requires minimum 2.5V VCC; no 1.7V operation; identical 400 kHz max clock and 256×8 organization | Not suitable for sub-2.5V battery-backed systems; otherwise drop-in for 3.3V/5V industrial boards | Select when operating exclusively above 2.5V and legacy design reuse is prioritized over lowest voltage support |
| 24FC02-I/OT | Supports 1 MHz I²C clock (vs. 400 kHz); same 1.7V–5.5V range; identical pinout and WP functionality | Enables higher throughput in bandwidth-constrained systems (e.g., real-time data loggers), but requires host I²C controller capable of 1 MHz | Choose when faster write/read rates are required and host supports 1 MHz I²C timing margins |
Compared with 24LC02B-I/OT, the 24AA02T-I/OT16KVAO enables lower-voltage operation critical for energy-sensitive designs, while versus 24FC02-I/OT it trades maximum speed for broader legacy I²C controller compatibility-making it optimal for cost-sensitive, low-power industrial endpoints where 400 kHz suffices.
Availability
24AA02T-I/OT16KVAO is available at Aetrix Electronics and suitable for industrial automation, IoT sensor nodes, and medical diagnostics requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for 24AA02T-I/OT16KVAO 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, serving industrial, automotive, and consumer markets with high-reliability silicon and development tools.
The 24AA02T-I/OT16KVAO belongs to Microchip's 24XX02 family of I²C EEPROMs, designed specifically for low-power, space-constrained embedded systems needing trusted nonvolatile storage with minimal external components.
FAQ
What is the exact package type and lead count for 24AA02T-I/OT16KVAO?
The 24AA02T-I/OT16KVAO is supplied in a 5-lead SC-70 package (Microchip designation "LT"), measuring 2.00 mm × 1.25 mm × 0.90 mm with wettable flanks for solder-joint inspection. Pin 1 is identified by a beveled corner, and the package is JEDEC-compliant with matte tin plating.
Does 24AA02T-I/OT16KVAO support standard I²C addressing without external jumpers?
Yes, the 24AA02T-I/OT16KVAO uses a fixed 7-bit I²C address of 1010xxx, where the three least-significant bits (A2–A0) are internally unconnected and ignored-resulting in a single, unambiguous device address (0xA0 for write, 0xA1 for read) regardless of external pin states.
How does the WP pin function on 24AA02T-I/OT16KVAO, and what happens if left floating?
The WP pin on 24AA02T-I/OT16KVAO must be tied to either VSS (enabling full read/write) or VCC (disabling all writes). If left floating, behavior is undefined and may result in partial or intermittent write protection-Microchip specifies that WP must be actively driven to a valid logic level for guaranteed operation.
What is the maximum write endurance and data retention specification for 24AA02T-I/OT16KVAO?
The 24AA02T-I/OT16KVAO is rated for more than 1,000,000 erase/write cycles and greater than 200 years of data retention at 25°C. These values are characterized and ensured by Microchip's process and reliability testing-not merely typical estimates-and apply across the full industrial temperature range.
Can 24AA02T-I/OT16KVAO operate reliably in noisy industrial environments?
Yes, the 24AA02T-I/OT16KVAO includes Schmitt-trigger inputs on SDA and SCL with ≥50 mV hysteresis and output slope control to suppress ground bounce. Combined with >4 kV HBM ESD rating and bus timing margins validated down to 1.7V, it maintains robust I²C communication in electrically harsh settings like motor drives and PLC backplanes.
24AA02T-I/OT16KVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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:
- 100 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
24AA02T-I/OT16KVAO FAQ
1.How can I place an order for 24AA02T-I/OT16KVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA02T-I/OT16KVAO 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 24AA02T-I/OT16KVAO reliable?
The price and inventory of 24AA02T-I/OT16KVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA02T-I/OT16KVAO is usually 5 days.
3.What payment methods are accepted for 24AA02T-I/OT16KVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA02T-I/OT16KVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA02T-I/OT16KVAO?
24AA02T-I/OT16KVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA02T-I/OT16KVAO 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 24AA02T-I/OT16KVAO?
For technical support, including 24AA02T-I/OT16KVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA02T-I/OT16KVAO requirements.
6.How does Aetrix verify that 24AA02T-I/OT16KVAO is sourced from the original manufacturer or authorized distributors?
All 24AA02T-I/OT16KVAO 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 24AA02T-I/OT16KVAO meets industry standards.
7.What is the process for return or replacement of 24AA02T-I/OT16KVAO?
All 24AA02T-I/OT16KVAO units undergo pre-shipment inspection (PSI). If there is an issue with 24AA02T-I/OT16KVAO, 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 24AA02T-I/OT16KVAO part is unused and in its original packaging.
Return procedure for 24AA02T-I/OT16KVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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