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Microchip Technology 24FC08T-I/ST
- Part No.:
- 24FC08T-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24FC08T-I/ST.pdf
- Description:
- IC EEPROM 8KBIT I2C 1MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,700
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Product details
Overview
24FC08T-I/ST 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 1 MHz maximum clock frequency, 5 ms max page write time, and industrial temperature range (–40°C to +85°C). It features hardware write-protection via the WP pin, 16-byte page buffer, and Schmitt-trigger inputs for noise immunity - deployed in embedded system configuration storage and sensor calibration data retention.
For engineers reviewing the 24FC08T-I/ST datasheet, 24FC08T-I/ST pinout, 24FC08T-I/ST application, or 24FC08T-I/ST equivalent, key selection criteria include its 1 MHz I²C speed at 1.7V–5.5V, extended-temperature industrial grade, SOIC-8 package compatibility, and hardware write-protect functionality for secure parameter storage.
Technical Context
The 24FC08T-I/ST implements a two-wire I²C interface compliant with standard-mode (100 kHz), fast-mode (400 kHz), and fast-mode plus (1 MHz) timing specifications - uniquely supporting full 1 MHz operation across its entire 1.7V–5.5V VCC range. Its internal architecture includes a 16-byte page latch, HV generator for EEPROM programming, and address pointer logic enabling current-address, random, and sequential read modes.
It uses open-drain SDA/SCL with integrated Schmitt triggers and slope control to suppress ground bounce and bus noise. Write protection is implemented via a dedicated WP input that disables all write operations when pulled high, while read access remains fully functional - critical for firmware-safe configuration storage in field-deployed devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8), organized as four independent 256-word blocks for segmented access control |
| Interface | I²C-compatible two-wire serial bus with 1 MHz max clock - enables high-speed parameter updates without MCU GPIO overhead |
| VCC Range | 1.7V to 5.5V - supports direct interfacing with low-voltage MCUs (e.g., 1.8V logic) and legacy 5V systems |
| Write Cycle Time | ≤5 ms per byte or page - ensures rapid nonvolatile storage of runtime-critical settings without blocking host processor |
| Endurance | 1,000,000 erase/write cycles - suitable for applications requiring frequent recalibration or logging (e.g., energy metering) |
| Data Retention | >200 years at +25°C - guarantees long-term integrity of factory-trimmed coefficients and security keys |
| Temperature Range | Industrial: –40°C to +85°C - qualified for use in automotive body control modules and industrial PLC I/O modules |
Pinout & Package
24FC08T-I/ST is supplied in an 8-lead SOIC (SN) package (3.90 mm body width), RoHS-compliant, with gull-wing leads and JEDEC-standard footprint. The exposed pad is not present in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Return path for all internal circuitry; must be connected to system GND with low-impedance trace |
| WP | Hardware write-protect input | Pulled high to disable all writes (read-only mode); pulled low to enable full read/write access |
| SCL | Serial clock input | Master-generated clock synchronizing all I²C transactions; requires external pull-up resistor |
| SDA | Serial data bidirectional I/O | Open-drain bus line for address/data transfer; requires external pull-up resistor (2 kΩ typical for 1 MHz) |
| VCC | Power supply | 1.7V–5.5V supply input; decoupling capacitor (0.1 µF) required within 10 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| 1 MHz I²C interface at 1.7V | Enables fastest possible configuration updates in battery-powered IoT nodes without voltage boosting |
| 16-byte page write buffer | Reduces I²C transaction count by up to 16× versus byte-write - lowering bus contention and power consumption |
| Schmitt-trigger inputs with 50 ns spike suppression | Ensures reliable operation on electrically noisy PCBs (e.g., motor drive boards) without external filtering |
| Hardware write-protect (WP pin) | Prevents accidental or malicious firmware corruption during field updates - no software dependency required |
| 1 µA standby current (I-temp) | Extends battery life in always-on sensor nodes; meets ultra-low-power design targets for Class 1 explosion-proof devices |
Applications
| Smart Energy Metering | Automotive Body Control Module |
|---|---|
Use Scenario: Storing tariff schedules, pulse-count calibration constants, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding metrology parameters updated infrequently but requiring guaranteed retention over 15+ years. Use Value: 200-year data retention and 1M endurance ensure compliance with IEC 62056-21 requirements without periodic reprogramming. | Use Scenario: Saving seat/mirror position memory, door lock state, and lighting configuration in vehicle interior ECUs. IC Role / Device Role / Timing Role: Dedicated parameter store accessed only during ignition-on initialization or user adjustment events. Use Value: Hardware WP pin prevents unintended writes during ECU reset transients - eliminating risk of lost user preferences. |
| Industrial PLC I/O Module | Medical Infusion Pump |
Use Scenario: Holding channel-specific gain/offset trims, sensor linearization tables, and diagnostic history in modular analog input cards. IC Role / Device Role / Timing Role: Calibration data repository updated only during factory calibration or field service - accessed via isolated I²C bus. Use Value: 1.7V operation allows direct connection to isolated 3.3V or 2.5V domains without level-shifting components. | Use Scenario: Storing drug library profiles, dose limits, and operator audit trails in Class II medical devices with battery backup. IC Role / Device Role / Timing Role: Secure parameter vault with write-protection enforced during normal operation to meet IEC 62304 safety requirements. Use Value: AEC-Q100 qualification provides proven reliability for life-critical applications where EEPROM failure could cause therapy interruption. |
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/ST | Max I²C clock = 400 kHz (100 kHz below 2.5V); same 8-Kbit organization, SOIC-8 package, and WP pin | Limited to lower-speed control loops; unsuitable for high-throughput parameter streaming | Select when system clock budget is constrained and 1 MHz is unnecessary |
| AT24C08D-SSHM-T | Same 8-Kbit size, SOIC-8, 1.7–5.5V, but rated only to 400 kHz; lacks AEC-Q100 qualification | Not approved for automotive or safety-critical industrial use; lower production traceability | Choose for cost-sensitive consumer electronics where automotive qualification is not required |
Compared with 24AA08T-I/ST and AT24C08D-SSHM-T, the 24FC08T-I/ST delivers 2.5× higher I²C bandwidth and automotive-grade reliability - making it the optimal choice for real-time configuration updates in harsh-environment systems where both speed and qualification matter.
Availability
24FC08T-I/ST is available at Aetrix Electronics and suitable for smart metering, automotive body control, industrial PLC I/O, and medical infusion pump designs requiring stable component supply, long-lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for 24FC08T-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 microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.
The 24FC08T-I/ST belongs to Microchip's 24XX08 family of serial EEPROMs, engineered specifically for robust, low-power, and high-reliability nonvolatile storage in automotive, industrial, and medical applications where data integrity under voltage variation and temperature stress is mandatory.
FAQ
What is the maximum I²C clock frequency supported by the 24FC08T-I/ST?
The 24FC08T-I/ST supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V VCC range - distinguishing it from the 24AA08 (max 400 kHz) and 24LC08B (max 400 kHz, min 2.5V). This enables faster parameter loading in time-critical embedded systems without requiring voltage translation or bus arbitration delays. The 24FC08T-I/ST achieves this via optimized internal timing circuits validated across industrial temperature.
Does the 24FC08T-I/ST support hardware write protection, and how is it implemented?
Yes, the 24FC08T-I/ST implements hardware write protection via the dedicated WP (Write-Protect) pin. When WP is tied to VCC, all write operations (byte and page) are inhibited while read access remains fully functional. When WP is tied to VSS or left floating, full read/write capability is enabled. This feature is active across the entire memory array (addresses 000h–3FFh) and requires no firmware intervention - a key safety mechanism in the 24FC08T-I/ST design.
What package type is used for the 24FC08T-I/ST, and is it compatible with standard SOIC-8 footprints?
The 24FC08T-I/ST uses an 8-lead plastic small outline (SOIC) package designated SN, with 3.90 mm body width and 1.27 mm pitch - fully compliant with JEDEC MS-012AA. It matches standard SOIC-8 land patterns used for 24AA08T-I/ST and 24LC08BT-I/ST, enabling drop-in replacement in existing layouts. Pin 1 marking is a molded notch; the device has no exposed thermal pad.
How many erase/write cycles does the 24FC08T-I/ST guarantee, and what is its data retention specification?
The 24FC08T-I/ST guarantees a minimum of 1,000,000 erase/write cycles under industrial conditions (25°C, 5.5V, page-mode operation) and provides greater than 200 years of data retention at +25°C. These specifications are measured and characterized per Microchip DS20001710M, ensuring long-term reliability for applications such as factory calibration storage and firmware update staging - where the 24FC08T-I/ST serves as a trusted nonvolatile archive.
Is the 24FC08T-I/ST AEC-Q100 qualified, and for which automotive applications is it commonly used?
Yes, the 24FC08T-I/ST is AEC-Q100 qualified for Grade 2 (–40°C to +105°C) and Grade 3 (–40°C to +125°C) operation - meeting automotive reliability standards for passive components. It is widely deployed in body control modules (BCM), seat/mirror memory systems, HVAC control units, and ADAS sensor calibration storage - where its 1 MHz I²C interface accelerates boot-time configuration loading and its WP pin prevents inadvertent writes during CAN/LIN bus transients. The 24FC08T-I/ST is explicitly listed in Microchip's automotive product roadmap.
24FC08T-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:
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24FC08T-I/ST FAQ
1.How can I place an order for 24FC08T-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24FC08T-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 24FC08T-I/ST reliable?
The price and inventory of 24FC08T-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 24FC08T-I/ST is usually 5 days.
3.What payment methods are accepted for 24FC08T-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24FC08T-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24FC08T-I/ST?
24FC08T-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24FC08T-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 24FC08T-I/ST?
For technical support, including 24FC08T-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24FC08T-I/ST requirements.
6.How does Aetrix verify that 24FC08T-I/ST is sourced from the original manufacturer or authorized distributors?
All 24FC08T-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 24FC08T-I/ST meets industry standards.
7.What is the process for return or replacement of 24FC08T-I/ST?
All 24FC08T-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24FC08T-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 24FC08T-I/ST part is unused and in its original packaging.
Return procedure for 24FC08T-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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