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Microchip Technology 24FC04HT-E/ST
- Part No.:
- 24FC04HT-E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24FC04HT-E/ST.pdf
- Description:
- IC EEPROM 4KBIT I2C 1MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,873
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Product details
Overview
24FC04HT-E/ST from Microchip Technology Inc. is a 4-Kbit I²C-compatible serial EEPROM organized as two 256 × 8-bit blocks, supporting 1 MHz clock operation down to 1.7V supply, with 16-byte page write buffer, hardware half-array write-protection (100h–1FFh), and AEC-Q100 qualification for automotive applications.
For engineers reviewing the 24FC04HT-E/ST datasheet, 24FC04HT-E/ST pinout, 24FC04HT-E/ST application, or 24FC04HT-E/ST equivalent, this device delivers high-speed I²C communication, extended temperature operation (–40°C to +125°C), low-power standby current (≤3 µA), and robust noise immunity via Schmitt-trigger inputs and slope-controlled outputs - critical for automotive body control, industrial sensor calibration, and embedded firmware storage.
Technical Context
The 24FC04HT-E/ST implements a two-wire I²C interface with fully compliant Start/Stop condition detection, ACK polling support, and internal address pointer auto-increment for sequential reads. Its memory architecture uses dual 256-word blocks, selected via the B0 bit in the control byte, enabling independent access to each 256-byte segment.
It features dedicated hardware write-protection logic tied to the WP pin: when pulled high, it disables writes to addresses 100h–1FFh while permitting full read access; all pins A0–A2 are unconnected and may be left floating. The device employs self-timed erase/write cycles with 5 ms maximum page write time and supports up to 1 million endurance cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kbit (512 × 8), split into two 256-word blocks for selective addressing |
| Interface | I²C-compatible two-wire bus, supports 1 MHz max clock at 1.7–5.5V (no derating) |
| Supply Voltage | 1.7V to 5.5V - enables direct integration with 1.8V, 3.3V, and 5V systems without level shifters |
| Write Protection | Hardware-enabled half-array protection (100h–1FFh) via WP pin; no software overhead required |
| Endurance & Retention | ≥1,000,000 erase/write cycles; >200 years data retention at 85°C |
| Temperature Range | Extended grade: –40°C to +125°C - qualified per AEC-Q100 Grade 1 for automotive under-hood use |
| Standby Current | ≤3 µA at +125°C - reduces system power budget in always-on modules |
Pinout & Package
24FC04HT-E/ST is packaged in an 8-lead SOIC (SN) with 3.90 mm body width, RoHS-compliant matte tin lead finish, and JEDEC-standard footprint (pitch = 1.27 mm). Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection; may be left floating or tied to VSS/VCC - no effect on operation |
| A1 | Address Input | No internal connection; no impact on device addressing or functionality |
| A2 | Address Input | No internal connection; unused per datasheet Table 2-1 |
| VSS | Ground | Reference return path for all internal circuitry and I/O; must be low-impedance |
| SDA | Serial Data I/O | Open-drain bidirectional line requiring external pull-up (2 kΩ typical for 1 MHz); carries address/data and ACK/NACK |
| SCL | Serial Clock Input | Input-only clock line synchronized to host controller; determines timing for all transfers |
| WP | Write-Protect Control | Logic-high enables half-array protection (100h–1FFh); logic-low enables full read/write access |
| VCC | Power Supply | Single 1.7–5.5V supply powering EEPROM core, interface logic, and charge pump |
Key Features
| Feature | Design Value |
|---|---|
| 1 MHz I²C Operation | Enables faster firmware updates and configuration writes vs. legacy 100/400 kHz EEPROMs - reduces system boot latency |
| Schmitt Trigger Inputs | Provides ≥50 mV hysteresis on SDA/SCL, rejecting noise spikes up to 50 ns - improves reliability in electrically noisy automotive environments |
| Page Write Buffer (16 bytes) | Reduces total write time by 8× vs. byte-write mode for contiguous data - critical for logging burst sensor data |
| AEC-Q100 Grade 1 Qualification | Validated for automotive applications including body control modules, HVAC, and ADAS sensor calibration storage |
| Hardware Write-Protection | Eliminates need for software lock bits or command sequences - prevents accidental overwrites of critical calibration data |
Applications
| Automotive Body Control Module | Industrial Sensor Calibration Storage |
|---|---|
|
Use Scenario: Storing door lock actuator profiles, mirror position presets, and lighting configuration across vehicle life cycles. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed data integrity during ignition cycling and battery disconnect events. Use Value: AEC-Q100 qualification ensures operation at +125°C under hood; 1.7V min VCC supports deep-sleep modes during key-off battery conservation. |
Use Scenario: Retaining factory-calibrated offset/gain coefficients for pressure, temperature, and humidity sensors in process automation equipment. IC Role / Device Role / Timing Role: Secure, long-term storage of trim values accessed only during power-up or recalibration routines. Use Value: Hardware WP pin protects calibration region (100h–1FFh) from field firmware updates - eliminating risk of corruption during OTA patches. |
| Medical Device Configuration Memory | Smart Energy Meter Firmware Parameters |
|
Use Scenario: Holding user-defined alarm thresholds, display brightness settings, and audit log enable flags in portable diagnostic tools. IC Role / Device Role / Timing Role: Low-power, tamper-resistant storage accessible via standard I²C without additional protocol translation. Use Value: ≤3 µA standby current at +125°C extends battery life in battery-powered handheld devices; >200-year data retention meets medical device regulatory requirements. |
Use Scenario: Storing tariff schedules, metering constants, and security keys in ANSI C12.22-compliant smart meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: High-reliability nonvolatile memory interfaced directly to metrology SoC's I²C peripheral. Use Value: 1 MHz interface speed allows rapid parameter loading during meter initialization; E-temp grade ensures stability across –40°C to +85°C ambient extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA04HT-I/ST | Max clock = 400 kHz; VCC min = 1.7V; rated only for Industrial (–40°C to +85°C) | Lacks AEC-Q100 qualification and extended temperature support; unsuitable for under-hood automotive use | Select when cost sensitivity outweighs speed/temp requirements and automotive qualification is not needed. |
| AT24C04D-SSHM-T | 1 MHz capable; 1.7–5.5V; but rated only to +85°C (Industrial), no AEC-Q100 certification | Not qualified for automotive; lower endurance (100k cycles vs. 1M) and shorter data retention (100 years) | Use in commercial/industrial systems where extended temp and automotive reliability are not mandated. |
Compared with 24FC04HT-E/ST, the 24AA04HT-I/ST trades 1 MHz speed and extended temperature for lower cost, while AT24C04D-SSHM-T offers similar speed but lacks automotive qualification and long-term reliability metrics - making 24FC04HT-E/ST the sole choice for AEC-Q100-compliant, high-speed, high-endurance applications.
Availability
24FC04HT-E/ST is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor calibration storage, and medical device configuration memory requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 24FC04HT-E/ST 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 24FC04H family was designed specifically for automotive and high-reliability industrial applications requiring fast, low-voltage, AEC-Q100-qualified serial EEPROM with hardware write protection and extended temperature operation.
FAQ
What is the maximum I²C clock frequency supported by the 24FC04HT-E/ST?
The 24FC04HT-E/ST supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range and –40°C to +125°C operating temperature, unlike 24AA04H (400 kHz) or 24LC04BH (400 kHz with 2.5V min), making it the highest-speed option in the 24XX04H family.
Does the 24FC04HT-E/ST require external pull-up resistors on SDA and SCL lines?
Yes, the 24FC04HT-E/ST has open-drain SDA and input-only SCL pins, mandating external pull-up resistors. For 1 MHz operation, a 2 kΩ resistor to VCC is recommended per Microchip's AC characteristics table to meet rise-time requirements (≤1000 ns).
How does the WP pin function on the 24FC04HT-E/ST?
When WP is tied to VCC, the 24FC04HT-E/ST hardware-protects memory addresses 100h–1FFh from write operations while allowing full read access; tying WP to VSS enables full read/write capability across the entire 000h–1FFh address space - no software commands required.
Is the 24FC04HT-E/ST pin-compatible with other 24XX04H variants like 24AA04HT-I/ST?
Yes, the 24FC04HT-E/ST shares identical 8-lead SOIC (SN) pinout and terminal functions with 24AA04HT-I/ST and 24LC04BHT-I/ST, including unconnected A0–A2 pins, VSS, SDA, SCL, WP, and VCC - enabling drop-in replacement where speed and temperature specs align.
What is the endurance rating and data retention specification for the 24FC04HT-E/ST?
The 24FC04HT-E/ST is rated for ≥1,000,000 erase/write cycles and >200 years of data retention at +85°C, validated per Microchip DS20002119C, making it suitable for applications requiring decades-long firmware or calibration storage without refresh.
24FC04HT-E/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24FC04HT-E/ST FAQ
1.How can I place an order for 24FC04HT-E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24FC04HT-E/ST 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-E/ST reliable?
The price and inventory of 24FC04HT-E/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24FC04HT-E/ST is usually 5 days.
3.What payment methods are accepted for 24FC04HT-E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24FC04HT-E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24FC04HT-E/ST?
24FC04HT-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24FC04HT-E/ST 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-E/ST?
For technical support, including 24FC04HT-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24FC04HT-E/ST requirements.
6.How does Aetrix verify that 24FC04HT-E/ST is sourced from the original manufacturer or authorized distributors?
All 24FC04HT-E/ST 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-E/ST meets industry standards.
7.What is the process for return or replacement of 24FC04HT-E/ST?
All 24FC04HT-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24FC04HT-E/ST, 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-E/ST part is unused and in its original packaging.
Return procedure for 24FC04HT-E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24FC04HT-E/ST Tags
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