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Microchip Technology 24AA08T-I/MC
- Part No.:
- 24AA08T-I/MC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
24AA08T-I/MC.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,352
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Product details
Overview
24AA08T-I/MC from Microchip Technology Inc. is an 8-Kbit I²C-compatible serial EEPROM organized as four 256 × 8-bit blocks, operating from 1.7V to 5.5V with 400 kHz max clock frequency, 1 µA standby current, and industrial temperature range (–40°C to +85°C). It features hardware write-protection via the WP pin, 16-byte page write buffer, and Schmitt-trigger inputs for noise immunity - deployed in embedded system configuration storage and sensor calibration data retention.
For engineers reviewing the 24AA08T-I/MC datasheet, 24AA08T-I/MC pinout, 24AA08T-I/MC application, or 24AA08T-I/MC equivalent, key selection criteria include VCC min (1.7V), I²C speed grade (400 kHz at ≥2.5V), WP-enabled hardware protection, page write capability (16 bytes), and SOIC-8 package compatibility with standard PCB footprints.
Technical Context
The 24AA08T-I/MC implements a two-wire I²C interface with open-drain SDA/SCL pins requiring external pull-ups, supports block-select addressing (B1/B0 bits) to access four independent 256-byte memory segments, and uses internal address pointer auto-increment for sequential reads. Its EEPROM array employs charge-pump HV generation for byte/page erase/write operations.
Write cycles are self-timed (max 5 ms), support both byte and page modes, and include acknowledge polling for bus efficiency. The device incorporates input filtering (50 ns spike suppression) and slope-controlled outputs to suppress ground bounce - critical for reliable operation in electrically noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8), organized as four 256-word blocks for segmented firmware/data partitioning |
| VCC Range | 1.7V–5.5V - enables direct interface with 1.8V/3.3V/5V microcontrollers without level-shifting |
| I²C Clock Frequency | Up to 400 kHz (≥2.5V); 100 kHz (1.7V–2.5V) - ensures interoperability with legacy and low-power controllers |
| Page Write Buffer | 16 bytes - reduces write transaction overhead by up to 16× vs. byte-write mode |
| Endurance | 1,000,000 erase/write cycles - supports frequent field-updatable parameter logging |
| Data Retention | 200 years at +85°C - guarantees long-term reliability in unattended industrial deployments |
| Write Protection | Hardware-enforced via WP pin tied to VCC - prevents accidental overwrites during power transients |
Pinout & Package
24AA08T-I/MC is packaged in an 8-lead SOIC (SN) with 150-mil body width, JEDEC MS-012AC compliant, and marked "4A08T" per Microchip's marking convention. Pin 1 is located at the top-left corner with notch or dot indicator.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Return path for all internal circuitry; must be connected to system GND plane for stable bias |
| WP | Write-protect control input | Logic-high disables all writes (read-only mode); tied to VCC for permanent protection or VSS for full R/W access |
| SCL | Serial clock input | Open-drain input synchronized to master clock; requires external pull-up resistor (2 kΩ typical for 400 kHz) |
| SDA | Serial data I/O | Bidirectional open-drain line for address/data transfer; shares pull-up with SCL in standard I²C bus topology |
| VCC | Power supply | Single 1.7–5.5V rail powers EEPROM core and interface logic; decoupling capacitor (0.1 µF) required near pin |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation down to 1.7V | Enables direct integration into battery-powered or energy-harvesting systems without voltage boosters |
| Schmitt-trigger inputs on SDA/SCL | Provides 50 mV hysteresis (0.05×VCC) to reject EMI-induced glitches on noisy industrial buses |
| Output slope control | Prevents ground bounce during fast transitions, eliminating false Start/Stop detection in multi-drop I²C networks |
| ESD protection >4 kV | Meets IEC 61000-4-2 Level 3 requirements - suitable for handling in non-ESD-protected assembly lines |
| Factory programming option | Allows pre-loading of calibration constants or security keys during wafer test, reducing post-solder programming steps |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding trim values accessed at boot-time by MCU before ADC initialization. Use Value: Eliminates need for external trimming potentiometers and enables automated calibration during production test. | Use Scenario: Retaining user-defined settings (network IP, display brightness, alarm thresholds) across power cycles in HVAC controllers. IC Role / Device Role / Timing Role: Persistent parameter store updated infrequently but read at every startup; accessed via I²C during firmware initialization sequence. Use Value: Ensures consistent user experience and eliminates reconfiguration after brown-out events or firmware updates. |
| Medical Device Parameter Backup | Automotive Body Control Module |
Use Scenario: Safeguarding therapy parameters and usage logs in portable infusion pumps subject to regulatory audit trails. IC Role / Device Role / Timing Role: Tamper-resistant data logger with WP pin permanently asserted to prevent runtime modification of safety-critical values. Use Value: Meets IEC 62304 software lifecycle requirements for Class C medical devices through hardware-enforced write lock. | Use Scenario: Storing seat/mirror position presets and lighting profiles in automotive door modules compliant with AEC-Q100 Grade 2. IC Role / Device Role / Timing Role: Automotive-qualified EEPROM interfacing with 3.3V CAN/LIN microcontroller; operates across –40°C to +85°C ambient. Use Value: Provides guaranteed data integrity over 15-year vehicle lifetime with 200-year retention at elevated junction temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC08BT-I/MC | Requires minimum 2.5V VCC; same 400 kHz speed and SOIC-8 package | Not suitable for 1.8V systems; otherwise functionally identical for industrial temp range | Select when system rail is ≥2.5V and cost sensitivity favors mature 24LC08B silicon |
| 24FC08T-I/MC | Supports 1 MHz I²C clock and extended temp (–40°C to +125°C); same 8-Kbit density | Required for high-speed data logging or under-hood automotive use cases beyond 85°C | Choose when faster bus throughput or extended temperature operation is mandatory |
Compared with 24LC08BT-I/MC, the 24AA08T-I/MC enables lower-voltage operation (1.7V), while versus 24FC08T-I/MC it trades 1 MHz speed and extended temperature for broader 1.7–5.5V compatibility and established industrial qualification - making it optimal for cost-sensitive 1.8V/3.3V embedded designs.
Availability
24AA08T-I/MC is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system configuration, medical device parameter backup, and automotive body control module applications requiring stable component supply and long-term obsolescence management.
Supply support for 24AA08T-I/MC 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 24AA08T-I/MC belongs to Microchip's 24XX08 family of I²C serial EEPROMs, designed specifically for low-power, space-constrained embedded systems needing reliable nonvolatile storage with minimal external components.
FAQ
What is the maximum I²C clock frequency supported by the 24AA08T-I/MC?
The 24AA08T-I/MC supports up to 400 kHz when VCC is 2.5V or higher; at 1.7V–2.49V, the maximum clock frequency is reduced to 100 kHz. This dual-speed capability allows seamless integration across mixed-voltage systems without protocol translation.
Does the 24AA08T-I/MC require external pull-up resistors on SDA and SCL lines?
Yes, the 24AA08T-I/MC has open-drain SDA and SCL pins and requires external pull-up resistors. Typical values are 2 kΩ for 400 kHz operation and 10 kΩ for 100 kHz - selected based on bus capacitance and rise-time requirements per I²C specification.
How does hardware write-protection work on the 24AA08T-I/MC?
When the WP pin of the 24AA08T-I/MC is tied to VCC, all write operations (byte and page) are inhibited while read access remains fully functional. This hardware lock prevents accidental or malicious overwrites during power-up sequences or firmware faults.
What is the page write buffer size of the 24AA08T-I/MC, and how does it improve efficiency?
The 24AA08T-I/MC features a 16-byte page write buffer. Writing 16 bytes in a single transaction reduces I²C bus overhead by eliminating 15 repeated address transmissions and ACK cycles - cutting total write time by ~60% compared to individual byte writes.
Is the 24AA08T-I/MC qualified for automotive applications?
No - the 24AA08T-I/MC is rated for industrial temperature (–40°C to +85°C) and is not AEC-Q100 qualified. For automotive use, Microchip recommends the 24LC08B or 24FC08 variants, which carry AEC-Q100 Grade 2 or Grade 1 certification respectively.
24AA08T-I/MC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 256 x 8 x 4
- 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-DFN (2x3)
24AA08T-I/MC FAQ
1.How can I place an order for 24AA08T-I/MC through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA08T-I/MC 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 24AA08T-I/MC reliable?
The price and inventory of 24AA08T-I/MC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA08T-I/MC is usually 5 days.
3.What payment methods are accepted for 24AA08T-I/MC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA08T-I/MC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA08T-I/MC?
24AA08T-I/MC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA08T-I/MC 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 24AA08T-I/MC?
For technical support, including 24AA08T-I/MC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA08T-I/MC requirements.
6.How does Aetrix verify that 24AA08T-I/MC is sourced from the original manufacturer or authorized distributors?
All 24AA08T-I/MC 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 24AA08T-I/MC meets industry standards.
7.What is the process for return or replacement of 24AA08T-I/MC?
All 24AA08T-I/MC units undergo pre-shipment inspection (PSI). If there is an issue with 24AA08T-I/MC, 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 24AA08T-I/MC part is unused and in its original packaging.
Return procedure for 24AA08T-I/MC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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