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Microchip Technology 24FC08T-E/MUY
- Part No.:
- 24FC08T-E/MUY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
24FC08T-E/MUY.pdf
- Description:
- IC EEPROM 8KBIT I2C 1MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,806
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Product details
Overview
24FC08T-E/MUY from Microchip Technology Inc. is an 8-Kbit I²C-compatible serial EEPROM organized as four 256 × 8-bit blocks, supporting 1 MHz clock operation down to 1.7V supply, with 16-byte page write buffer, hardware write-protect (WP), and extended temperature range (–40°C to +125°C). It enables nonvolatile configuration storage in space-constrained industrial sensors and automotive body control modules.
For engineers reviewing the 24FC08T-E/MUY datasheet, 24FC08T-E/MUY pinout, 24FC08T-E/MUY application, or 24FC08T-E/MUY equivalent, key selection criteria include its 1 MHz I²C speed at 1.7V, E-temp qualification, 5 ms max page write time, Schmitt-trigger noise immunity on SDA/SCL, and compatibility with standard 2-wire bus protocols in resource-limited embedded systems.
Technical Context
The 24FC08T-E/MUY implements a two-wire I²C interface with fixed 4-bit device code (1010b) and 2-bit block select addressing, enabling access to 1024 bytes across four independent 256-byte memory blocks. Its internal address pointer auto-increments during sequential reads and supports current-address, random, and sequential read modes.
It features a dedicated Write-Protect (WP) input that disables all write operations when pulled high, while preserving full read functionality. The device uses on-chip charge pump for EEPROM programming and includes built-in slope control on outputs to suppress ground bounce during switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit), organized as four 256-word blocks - enables segmented firmware/config storage with independent block addressing |
| I²C Clock Frequency | Up to 1 MHz at VCC = 1.7–5.5V - supports high-speed configuration updates without requiring MCU clock scaling |
| Page Write Buffer | 16-byte buffer - reduces I²C transaction count by up to 16× versus byte-write, improving bus efficiency in burst-write scenarios |
| Write Cycle Time | ≤5 ms per byte or page - defines minimum inter-write delay; enables predictable timing for real-time logging applications |
| Endurance & Retention | 1 million erase/write cycles; >200 years data retention - qualifies for long-life industrial deployments with frequent parameter updates |
| Supply Voltage Range | 1.7V to 5.5V - interoperable with 1.8V, 2.5V, 3.3V, and 5V logic domains without level-shifting |
| Temperature Range | –40°C to +125°C (Extended grade) - certified for under-hood automotive and high-ambient industrial environments |
Pinout & Package
24FC08T-E/MUY is packaged in an 8-lead UDFN (2 mm × 3 mm, 0.5 mm pitch) with wettable flank leads, compatible with automated optical inspection (AOI) and reflow soldering. The exposed pad is connected to VSS for thermal and electrical grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Primary return path for all internal circuitry; must be low-impedance connection to system GND plane |
| WP | Hardware write-protect input | Logic-high disables all write/erase operations; tied to VCC for permanent protection of calibration data or boot parameters |
| SCL | Serial clock input | Master-generated clock synchronizing all I²C transfers; Schmitt-trigger input rejects <100 ns noise spikes |
| SDA | Serial data bidirectional I/O | Open-drain output requiring external pull-up; supports multi-master arbitration and ACK/NACK signaling |
| VCC | Power supply | Supplies core logic and EEPROM array; bypass capacitor (≥100 nF) required within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| 1 MHz I²C interface at 1.7V | Enables direct interfacing with modern low-voltage MCUs (e.g., ARM Cortex-M0+) without voltage translation or clock throttling |
| 16-byte page write buffer | Reduces typical configuration save time from 80+ ms (byte mode) to ≤5 ms, minimizing bus occupation in time-critical systems |
| Schmitt-trigger inputs + 50 ns spike suppression | Ensures reliable communication on noisy automotive or industrial PCBs without external RC filtering |
| Hardware WP pin with VCC/VSS logic levels | Provides tamper-resistant protection for critical settings (e.g., safety thresholds, calibration offsets) without software overhead |
| AEC-Q100 qualified (Grade 1) | Validated for automotive use including thermal cycling, vibration, and ESD robustness - eliminates need for additional qualification testing |
Applications
| Automotive Body Control Unit | Industrial Sensor Calibration Storage |
|---|---|
Use Scenario: Storing door lock actuator profiles, mirror position presets, and lighting dimming curves in a BCM module operating at 125°C ambient. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding user-defined settings persistently across ignition cycles. Use Value: Leverages –40°C to +125°C rating and AEC-Q100 qualification to eliminate field failures due to thermal stress or ESD events. | Use Scenario: Retaining factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: High-reliability parameter vault accessed only during power-up or maintenance mode via I²C. Use Value: 1M-cycle endurance ensures >10 years of recalibration cycles in predictive maintenance systems. |
| Smart Energy Meter Firmware Patch Storage | Medical Infusion Pump Safety Parameter Vault |
Use Scenario: Holding signed firmware patch metadata and version rollback pointers in Class 0.5S electricity meters deployed in utility substations. IC Role / Device Role / Timing Role: Secure auxiliary memory for verified update staging, isolated from main flash to prevent corruption during OTA. Use Value: 1 MHz I²C speed enables fast patch validation before main MCU reboot, reducing meter downtime. | Use Scenario: Archiving drug library limits, occlusion pressure thresholds, and alarm silencing history in FDA-cleared infusion devices. IC Role / Device Role / Timing Role: Tamper-evident audit log and safety-critical parameter store with hardware write-lock. Use Value: WP pin tied to VCC prevents accidental overwrites during runtime, satisfying IEC 62304 SOUP requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA08T-I/MUY | Max I²C speed 400 kHz; rated only for –40°C to +85°C; same 8Kbit density and UDFN-8 package | Suitable for commercial-grade consumer electronics but not automotive or extended-temp industrial use | Select when cost sensitivity outweighs speed/temp requirements and AEC-Q100 is unnecessary |
| AT24C08D-MAHM-T | 1 MHz I²C, –40°C to +125°C, but uses 5-lead SOT23-5 package (no WP pin); 1 µA standby current vs. 3 µA for 24FC08T-E/MUY | Lacks hardware write-protection; limited to single-block addressing (no 2-bit block select) | Choose only if board layout constraints mandate SOT-23 and WP functionality is implemented in software or external logic |
Compared with 24AA08T-I/MUY and AT24C08D-MAHM-T, the 24FC08T-E/MUY uniquely combines 1 MHz speed, extended temperature range, hardware WP, and four-block addressing - making it the sole option for AEC-Q100-compliant systems requiring both high-speed configuration updates and physical write-locking.
Availability
24FC08T-E/MUY is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor calibration storage, smart energy meter firmware patch storage, and medical infusion pump safety parameter vaults requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 24FC08T-E/MUY 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, serving automotive, industrial, and communications markets with vertically integrated design and manufacturing.
The 24FC08T-E/MUY belongs to Microchip's 24XX08 family of I²C EEPROMs, engineered specifically for robust, low-power nonvolatile storage in harsh environments where reliability, speed, and qualification compliance are mandatory.
FAQ
What is the maximum I²C clock frequency supported by the 24FC08T-E/MUY?
The 24FC08T-E/MUY supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range, unlike the 24AA08 (max 400 kHz) or 24LC08B (max 400 kHz, min 2.5V). This allows faster configuration writes in time-sensitive applications such as automotive diagnostics or industrial PLC parameter loading. The 24FC08T-E/MUY maintains full timing compliance at 1 MHz even at 1.7V, eliminating need for clock throttling in battery-powered edge nodes.
Does the 24FC08T-E/MUY support hardware write protection, and how is it implemented?
Yes, the 24FC08T-E/MUY includes a dedicated Write-Protect (WP) pin that disables all write and erase operations when pulled high to VCC. When WP = VSS, full read/write access is enabled. This hardware-level lock prevents accidental or malicious overwrites of critical calibration data or safety parameters. Unlike software-based locks, the WP function remains active regardless of MCU state or firmware integrity - a key requirement for ISO 26262 ASIL-B systems. The 24FC08T-E/MUY implements this feature in all package variants except CSP.
What is the memory organization of the 24FC08T-E/MUY, and how does block addressing work?
The 24FC08T-E/MUY contains 8 Kbits (1024 bytes) organized as four independent 256-byte blocks (000–0FFh, 100–1FFh, 200–2FFh, 300–3FFh). Block selection is controlled by bits B1 and B0 in the I²C control byte (1010 x B1 B0 R/W), allowing the host to access any block without changing the internal address pointer. This segmentation enables concurrent storage of different parameter sets - e.g., factory defaults in Block 0 and field-updated values in Block 1 - with atomic write isolation between blocks. The 24FC08T-E/MUY does not use A0/A1/A2 pins; they are NC.
How does the 24FC08T-E/MUY handle noise immunity on the I²C bus?
The 24FC08T-E/MUY incorporates Schmitt-trigger inputs on both SDA and SCL pins with ≥50 mV hysteresis and integrated 50 ns input filter spike suppression. This rejects fast transients common in automotive and industrial environments - such as relay switching noise or motor drive coupling - without requiring external RC filters. The device also features output slope control to limit dV/dt on SDA transitions, preventing ground bounce that could corrupt adjacent signals. These features are validated per AEC-Q100 stress tests and ensure reliable operation at 1 MHz even on 10 cm unshielded traces.
Is the 24FC08T-E/MUY AEC-Q100 qualified, and what grade does it meet?
Yes, the 24FC08T-E/MUY is AEC-Q100 qualified to Grade 1 (–40°C to +125°C ambient), covering thermal cycling, humidity bias, mechanical shock, and ESD (HBM >4 kV). This qualification applies specifically to the E-temp variant and is documented in Microchip's official AEC-Q100 test reports. The 24FC08T-E/MUY's qualification enables drop-in use in automotive powertrain, chassis, and body electronics without additional component-level reliability testing - a critical advantage over non-qualified alternatives like generic 24C08 parts. All 24FC08T-E/MUY units shipped by Aetrix Electronics carry full traceability to qualified lots.
24FC08T-E/MUY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 450 ns
- Voltage - Supply:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2x3)
24FC08T-E/MUY FAQ
1.How can I place an order for 24FC08T-E/MUY through Aetrix?
Please submit a Request for Quotation (RFQ) for 24FC08T-E/MUY 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 24FC08T-E/MUY reliable?
The price and inventory of 24FC08T-E/MUY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24FC08T-E/MUY is usually 5 days.
3.What payment methods are accepted for 24FC08T-E/MUY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24FC08T-E/MUY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24FC08T-E/MUY?
24FC08T-E/MUY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24FC08T-E/MUY 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 24FC08T-E/MUY?
For technical support, including 24FC08T-E/MUY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24FC08T-E/MUY requirements.
6.How does Aetrix verify that 24FC08T-E/MUY is sourced from the original manufacturer or authorized distributors?
All 24FC08T-E/MUY 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 24FC08T-E/MUY meets industry standards.
7.What is the process for return or replacement of 24FC08T-E/MUY?
All 24FC08T-E/MUY units undergo pre-shipment inspection (PSI). If there is an issue with 24FC08T-E/MUY, 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 24FC08T-E/MUY part is unused and in its original packaging.
Return procedure for 24FC08T-E/MUY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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