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Microchip Technology 24FC04HT-I/ST
- Part No.:
- 24FC04HT-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24FC04HT-I/ST.pdf
- Description:
- IC EEPROM 4KBIT I2C 1MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,186
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Product details
Overview
24FC04HT-I/ST 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 controller parameter backup.
For engineers reviewing the 24FC04HT-I/ST datasheet, 24FC04HT-I/ST pinout, 24FC04HT-I/ST application, or 24FC04HT-I/ST equivalent, key selection criteria include its 1 MHz I²C speed at 1.7V+, industrial/extended temperature range (-40°C to +125°C), SOIC-8 package, 5 ms max page write time, and write-protect functionality tied to the WP pin.
Technical Context
The 24FC04HT-I/ST 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 multi-byte writes within physical page boundaries (00h–0Fh, 10h–1Fh, etc.).
Write protection is implemented via the WP pin: tied to VSS for full read/write access; tied to VCC to lock addresses 100h–1FFh (half-array), leaving 000h–0FFh writable. Acknowledge polling is supported to detect 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 flexible addressing |
| Interface | I²C-compatible two-wire bus, supporting 100 kHz / 400 kHz / 1 MHz clock rates depending on VCC |
| Supply Voltage | 1.7V to 5.5V - enables direct interfacing with 1.8V, 2.5V, 3.3V, and 5V microcontrollers |
| Write Cycle Time | ≤5 ms maximum - defines minimum interval between successive write commands |
| Endurance | 1,000,000 erase/write cycles - ensures long-term reliability in frequent-update applications |
| Data Retention | 200 years at +25°C - guarantees nonvolatile data integrity over product lifetime |
| Temperature Range | -40°C to +125°C (Extended grade) - qualified for harsh industrial and automotive under-hood environments |
Pinout & Package
24FC04HT-I/ST is supplied in an 8-lead SOIC (SN) package (3.90 mm body width), with gull-wing leads and standard JEDEC outline. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | No internal connection - may be left floating or tied to VSS/VCC without effect |
| A1 | Device Address Input | No internal connection - unused; no impact on device addressing or operation |
| A2 | Device Address Input | No internal connection - not required for 24FC04H family addressing logic |
| VSS | Ground Reference | Primary return path for all internal circuitry and I/O signals |
| SDA | Serial Data I/O | Open-drain bidirectional line requiring external pull-up; carries address, data, and ACK/NACK |
| SCL | Serial Clock Input | Master-generated clock synchronizing all I²C transfers; edge-sensitive timing critical for compliance |
| WP | Write-Protect Control | Active-high enable for half-array protection (100h–1FFh); determines R/W permission at power-on |
| VCC | Power Supply | Single supply input supporting 1.7V–5.5V operation; powers EEPROM core and I/O buffers |
Key Features
| Feature | Design Value |
|---|---|
| 1 MHz I²C Speed at 1.7V | Enables high-throughput configuration updates in low-voltage systems without clock stretching |
| Hardware Write-Protection | Prevents accidental overwrite of critical firmware parameters or calibration data via dedicated WP pin |
| Schmitt Trigger Inputs | Rejects bus noise up to 50 ns spikes, ensuring robust operation in electrically noisy industrial environments |
| 16-Byte Page Write Buffer | Reduces I²C transaction overhead by allowing up to 16 bytes per write cycle instead of single-byte writes |
| 1 µA Standby Current (I-temp) | Minimizes quiescent power draw in battery-backed or energy-harvesting applications |
Applications
| Industrial PLC Configuration Storage | Automotive Sensor Calibration Memory |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding user-defined operational settings across power cycles. Use Value: Ensures deterministic startup behavior and eliminates need for host reinitialization after power loss. | Use Scenario: Retaining factory-calibrated offset/gain coefficients for temperature, pressure, and position sensors in engine control units. IC Role / Device Role / Timing Role: Tamper-resistant calibration data vault accessed during boot-time sensor self-test. Use Value: Maintains measurement accuracy over vehicle lifetime and thermal cycling without recalibration. |
| Medical Device Settings Backup | Smart Meter Firmware Parameter Storage |
Use Scenario: Preserving user-selected therapy modes, dosage limits, and audit log pointers in portable infusion pumps. IC Role / Device Role / Timing Role: Secure, low-power memory for regulatory-compliant persistent state storage. Use Value: Meets IEC 62304 data integrity requirements with 200-year retention and 1M-cycle endurance. | Use Scenario: Holding tariff schedules, billing counters, and communication protocol keys in electricity/water meters. IC Role / Device Role / Timing Role: Field-updatable parameter store synchronized with utility network commands. Use Value: Supports remote firmware updates and secure metering data logging with hardware write-lock. |
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 at 1.7V–2.5V; 1.7V–5.5V supply; same SOIC-8 package and pinout | Limited to 400 kHz I²C speed below 2.5V - unsuitable for high-bandwidth parameter streaming | Select when cost sensitivity outweighs speed requirement and extended temp is not needed |
| AT24C04-SSHM-T | 4-Kbit I²C EEPROM; 1.7V–5.5V; 400 kHz max; AEC-Q100 Grade 2 (−40°C to +105°C); different manufacturer | Lower max temperature rating (+105°C vs. +125°C); no 1 MHz mode; different endurance spec (100k cycles) | Choose for legacy Atmel-based designs or where Microchip sourcing is constrained |
Compared with 24AA04HT-I/ST and AT24C04-SSHM-T, the 24FC04HT-I/ST delivers higher I²C throughput (1 MHz), broader temperature coverage (+125°C), and superior endurance (1M vs. 100k cycles), making it optimal for next-generation industrial and automotive control nodes requiring fast, reliable nonvolatile storage.
Availability
24FC04HT-I/ST is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, medical infusion devices, and smart utility meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 24FC04HT-I/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 microcontroller, analog, FPGA, and memory solutions, serving industrial, automotive, communications, and consumer markets with high-reliability silicon and development tools.
The 24FC04HT-I/ST belongs to Microchip's 24XX04H family of serial EEPROMs, designed specifically for space-constrained, low-power embedded systems needing robust, pin-compatible nonvolatile storage with configurable write protection and wide voltage/temp operation.
FAQ
What is the maximum I²C clock frequency supported by the 24FC04HT-I/ST?
The 24FC04HT-I/ST supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range. This is a key differentiator from the 24AA04H (max 400 kHz) and 24LC04BH (max 400 kHz, min 2.5V), enabling faster configuration writes in time-critical applications. The 24FC04HT-I/ST maintains full AC timing compliance at 1 MHz, including setup/hold times and rise/fall specifications.
How does the WP pin function on the 24FC04HT-I/ST?
On the 24FC04HT-I/ST, the WP pin provides hardware write-protection: when tied to VCC, addresses 100h–1FFh (half the array) are locked against write operations while remaining readable; when tied to VSS, full read/write access is enabled. This allows safe storage of immutable calibration data alongside user-modifiable parameters. The 24FC04HT-I/ST implements this logic internally - no external logic or software intervention is required.
Is the 24FC04HT-I/ST compatible with standard I²C protocols and controllers?
Yes, the 24FC04HT-I/ST is fully compliant with the standard Philips I²C-bus specification, supporting START/STOP conditions, 7-bit addressing (1010xxxR/W), ACK/NACK handshaking, and repeated START. It interoperates with all standard I²C masters including STM32, PIC, AVR, and ARM-based SoCs without protocol translation. Its Schmitt-trigger inputs and slope-controlled outputs ensure robust signal integrity on shared buses.
What is the endurance and data retention specification for the 24FC04HT-I/ST?
The 24FC04HT-I/ST is rated for 1,000,000 erase/write cycles and 200 years of data retention at +25°C. These values are characterized and guaranteed across the full industrial and extended temperature range (−40°C to +125°C). Endurance testing is performed in page mode; retention is verified under accelerated life testing per JEDEC standards. Both specs exceed typical requirements for industrial control and automotive applications.
Does the 24FC04HT-I/ST require external pull-up resistors on SDA and SCL lines?
Yes, the 24FC04HT-I/ST requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. Recommended values are 2 kΩ for 1 MHz operation, 10 kΩ for 100 kHz. Pull-ups must connect to the same VCC rail used by the 24FC04HT-I/ST. Incorrect pull-up sizing causes timing violations or bus contention - design guidance is provided in Microchip AN857 and the 24FC04HT-I/ST datasheet Figure 4-1.
24FC04HT-I/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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24FC04HT-I/ST FAQ
1.How can I place an order for 24FC04HT-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24FC04HT-I/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-I/ST reliable?
The price and inventory of 24FC04HT-I/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-I/ST is usually 5 days.
3.What payment methods are accepted for 24FC04HT-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24FC04HT-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24FC04HT-I/ST?
24FC04HT-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24FC04HT-I/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-I/ST?
For technical support, including 24FC04HT-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24FC04HT-I/ST requirements.
6.How does Aetrix verify that 24FC04HT-I/ST is sourced from the original manufacturer or authorized distributors?
All 24FC04HT-I/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-I/ST meets industry standards.
7.What is the process for return or replacement of 24FC04HT-I/ST?
All 24FC04HT-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24FC04HT-I/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-I/ST part is unused and in its original packaging.
Return procedure for 24FC04HT-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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