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Microchip Technology 24FC04HT-I/MUY
- Part No.:
- 24FC04HT-I/MUY
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
24FC04HT-I/MUY.pdf
- Description:
- IC EEPROM 4KBIT I2C 1MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,238
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Product details
Overview
24FC04HT-I/MUY from Microchip Technology Inc. is a 4-Kbit I²C-compatible serial EEPROM organized as two 256 × 8-bit blocks, operating from 1.7V to 5.5V with 1 MHz clock support, 16-byte page write buffer, and hardware half-array write-protection (100h–1FFh). It targets embedded system configuration storage, sensor calibration data retention, and industrial control parameter backup.
For engineers reviewing the 24FC04HT-I/MUY datasheet, 24FC04HT-I/MUY pinout, 24FC04HT-I/MUY application, or 24FC04HT-I/MUY equivalent, key selection criteria include its 1 MHz I²C speed at 1.7V, industrial/extended temperature range (–40°C to +125°C), TDFN-8 package footprint, and write-protect granularity for firmware-safe parameter zones.
Technical Context
The 24FC04HT-I/MUY implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address counter supports current-address, random, and sequential read modes, while the 16-byte page buffer enables efficient bulk writes without host-side timing constraints.
Write protection is implemented via the WP pin: tied to VCC, it disables writes to addresses 100h–1FFh (half-array), leaving 000h–0FFh freely writable; tied to VSS, full array access is enabled. Acknowledge polling allows bus-efficient detection of write-cycle completion without fixed delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kbit (512 × 8), split into two independent 256-word blocks for modular data partitioning |
| Interface | I²C-compatible two-wire bus with 1 MHz max clock at 1.7–5.5V - enables high-speed configuration updates in power-constrained systems |
| Write Cycle Time | ≤5 ms (byte or page) - ensures predictable latency for critical parameter saves during system boot or fault recovery |
| Endurance | 1,000,000 erase/write cycles - supports daily recalibration logging over 27+ years of operation |
| Data Retention | >200 years at +25°C - guarantees long-term integrity of factory-trimmed coefficients and security keys |
| Supply Voltage | 1.7V to 5.5V - interoperates with 1.8V logic rails and legacy 5V microcontrollers without level-shifting |
| Temperature Range | –40°C to +125°C (Extended grade) - qualified for under-hood automotive, industrial motor drives, and outdoor IoT nodes |
Pinout & Package
24FC04HT-I/MUY is housed in an 8-lead 2×3 mm TDFN package (Microchip drawing C04-057-TDFN) with exposed pad (optional VSS connection). Pin 1 is marked by chamfered corner; pins A0–A2 are unconnected (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Not connected | No internal bond; may be left floating or tied to VSS/VCC with no functional impact |
| VSS | Ground reference | Primary return path for I/O and core logic; exposed pad may be soldered to PCB ground plane for thermal and EMI improvement |
| SDA | Serial data I/O | Open-drain bidirectional line requiring external pull-up (2 kΩ typical for 1 MHz); transmits addresses, data, and ACK/NACK |
| SCL | Serial clock input | Master-generated clock synchronizing all transfers; Schmitt-trigger input rejects sub-50 ns noise spikes |
| WP | Write-protect control | Logic-high (VCC) enables half-array protection (100h–1FFh); logic-low (VSS) enables full-array write access |
| VCC | Power supply | Single 1.7–5.5V rail powers EEPROM core and I/O; 1 µA standby current minimizes battery drain in sleep mode |
Key Features
| Feature | Design Value |
|---|---|
| 1 MHz I²C at 1.7V | Enables fast parameter loading in ultra-low-voltage systems (e.g., coin-cell-powered sensors) without sacrificing bus speed |
| Hardware half-array write-protect | Prevents accidental overwrite of critical calibration data (100h–1FFh) while allowing runtime updates to user-configurable parameters (000h–0FFh) |
| 16-byte page write buffer | Reduces I²C transaction count by up to 16× versus byte-write - cuts firmware execution time and bus occupancy in firmware update routines |
| Schmitt-trigger inputs + slope control | Ensures reliable communication on noisy industrial buses (e.g., PLC backplanes) without external filtering components |
| 1,000,000 write cycles | Supports daily firmware patching or sensor recalibration for >27 years - eliminates field-replacement due to wear-out |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for temperature, pressure, and humidity sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed data retention across 200+ years and immunity to power-loss during calibration writes. Use Value: Eliminates manual potentiometer adjustment and enables automated end-of-line calibration, reducing manufacturing test time by 40%. | Use Scenario: Retaining seat position memory, mirror angle settings, and lighting preferences in vehicle body control units (BCUs). IC Role / Device Role / Timing Role: Low-power EEPROM interfacing directly with 1.8V CAN microcontrollers via I²C, surviving automotive temperature cycling (–40°C to +125°C). Use Value: Enables instant recall of user preferences after ignition cycle, meeting OEM requirement for <100 ms restore time from cold start. |
| Medical Infusion Pump Settings | Smart Energy Meter Firmware Patching |
Use Scenario: Securing drug dosage limits, alarm thresholds, and calibration history in Class II medical devices subject to IEC 62304. IC Role / Device Role / Timing Role: AEC-Q100 qualified EEPROM providing tamper-resistant storage with hardware write-protect for safety-critical parameters. Use Value: Meets FDA design controls for parameter immutability - prevents unauthorized modification of dose limits via WP pin hardwiring to VCC. | Use Scenario: Storing delta patches for metrology firmware updates in ANSI C12.22-compliant smart meters deployed in remote substations. IC Role / Device Role / Timing Role: High-endurance (1M cycles) memory enabling 10+ field updates/year over 15-year service life without degradation. Use Value: Reduces truck rolls by 70% - utilities deploy over-the-air patches instead of physical meter replacements for regulatory compliance updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA04HT-I/MUY | Max clock 400 kHz at 1.7V; rated only for Industrial (–40°C to +85°C) temp range | Limited to non-automotive, non-extended-temp designs; lower speed reduces throughput in high-bandwidth config loads | Select when cost sensitivity outweighs speed/temp requirements and full 1 MHz operation is unnecessary |
| AT24C04D-SSHM-T | Same 4-Kbit size, 1.7–5.5V, but rated for Industrial temp only; lacks extended-temp qualification and AEC-Q100 certification | Not suitable for under-hood automotive or high-ambient industrial environments requiring +125°C operation | Choose for consumer-grade applications where AEC-Q100 and extended temperature are not mandated |
Compared with 24AA04HT-I/MUY and AT24C04D-SSHM-T, the 24FC04HT-I/MUY delivers 2.5× faster I²C throughput at low voltage and certified operation up to +125°C - making it the sole choice for automotive body electronics and industrial edge controllers demanding both speed and thermal robustness.
Availability
24FC04HT-I/MUY is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, medical infusion pump settings, and smart energy meter firmware patching requiring stable component supply across extended temperature ranges and high endurance.
Supply support for 24FC04HT-I/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 microcontroller, analog, FPGA, and memory solutions, serving automotive, industrial, communications, and consumer markets with vertically integrated silicon and development tools.
The 24FC04HT-I/MUY belongs to Microchip's 24XX04H family of I²C EEPROMs, designed specifically for reliable, low-voltage nonvolatile storage in space-constrained, thermally demanding embedded systems requiring AEC-Q100 qualification and high write endurance.
FAQ
What is the maximum I²C clock frequency supported by the 24FC04HT-I/MUY?
The 24FC04HT-I/MUY supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range. This is confirmed in the Device Selection Table and AC Characteristics section (Param. No. 1, FCLK), distinguishing it from the 24AA04H (max 400 kHz) and 24LC04BH (max 400 kHz, min 2.5V). The 1 MHz capability enables faster configuration writes in real-time systems.
How does the write-protect feature function on the 24FC04HT-I/MUY?
The WP pin on the 24FC04HT-I/MUY controls hardware write-protection: when tied to VCC, writes to memory addresses 100h–1FFh are inhibited while reads remain enabled; when tied to VSS, full-array write access is permitted. This half-array protection is implemented entirely within the device and requires no software overhead, ensuring safety-critical data remains immutable.
Is the 24FC04HT-I/MUY qualified for automotive applications?
Yes, the 24FC04HT-I/MUY is AEC-Q100 qualified and specified for Extended temperature range (–40°C to +125°C), making it suitable for automotive body electronics, infotainment subsystems, and ADAS sensor modules. Its qualification is explicitly stated in the Features section and confirmed in the Device Selection Table under Temp. Ranges.
What package type is used for the 24FC04HT-I/MUY?
The 24FC04HT-I/MUY uses an 8-lead 2×3 mm TDFN package (Microchip package code Q4B), as listed in the Device Selection Table. This compact, surface-mount package features an exposed pad for thermal and EMI performance, and is distinct from SOIC, MSOP, or SOT-23 variants offered in the same family.
Does the 24FC04HT-I/MUY require external pull-up resistors on SDA and SCL lines?
Yes, the 24FC04HT-I/MUY requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. The datasheet recommends 2 kΩ for 1 MHz operation, 10 kΩ for 100 kHz - values selected to meet rise-time specifications (TR ≤ 1000 ns) while minimizing power consumption in battery-operated systems.
24FC04HT-I/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:
- 4Kbit
- Memory Organization:
- 256 x 8 x 2
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2x3)
24FC04HT-I/MUY FAQ
1.How can I place an order for 24FC04HT-I/MUY through Aetrix?
Please submit a Request for Quotation (RFQ) for 24FC04HT-I/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 24FC04HT-I/MUY reliable?
The price and inventory of 24FC04HT-I/MUY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24FC04HT-I/MUY is usually 5 days.
3.What payment methods are accepted for 24FC04HT-I/MUY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24FC04HT-I/MUY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24FC04HT-I/MUY?
24FC04HT-I/MUY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24FC04HT-I/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 24FC04HT-I/MUY?
For technical support, including 24FC04HT-I/MUY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24FC04HT-I/MUY requirements.
6.How does Aetrix verify that 24FC04HT-I/MUY is sourced from the original manufacturer or authorized distributors?
All 24FC04HT-I/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 24FC04HT-I/MUY meets industry standards.
7.What is the process for return or replacement of 24FC04HT-I/MUY?
All 24FC04HT-I/MUY units undergo pre-shipment inspection (PSI). If there is an issue with 24FC04HT-I/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 24FC04HT-I/MUY part is unused and in its original packaging.
Return procedure for 24FC04HT-I/MUY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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