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Microchip Technology 24FC08-E/ST
- Part No.:
- 24FC08-E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24FC08-E/ST.pdf
- Description:
- IC EEPROM 8KBIT I2C 1MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,300
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Product details
Overview
24FC08-E/ST from Microchip Technology Inc. is an 8-Kbit I²C-compatible serial EEPROM organized as four 256 × 8-bit blocks, supporting 1 MHz clock frequency at 1.7–5.5 V supply, with hardware write-protection via WP pin and 16-byte page write buffer. It operates across –40°C to +125°C (Extended temperature grade) in 8-lead SOIC package and is used for nonvolatile parameter storage in industrial sensor nodes and automotive control modules.
For engineers reviewing the 24FC08-E/ST datasheet, 24FC08-E/ST pinout, 24FC08-E/ST application, or 24FC08-E/ST equivalent, this page delivers verified electrical specs, SOIC package terminal mapping, I²C timing compliance at 1 MHz, endurance (1M cycles), and real-world use cases in automotive and extended-temperature embedded systems.
Technical Context
The 24FC08-E/ST implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. 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 supports full I²C protocol compliance-including Start/Stop detection, ACK polling during write cycles, and block-select addressing (B1/B0 bits)-with dedicated WP input for hardware-level array protection. The device uses self-timed erase/write cycles and requires no external high-voltage programming supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8), organized as four 256-word blocks for flexible data partitioning |
| Interface | I²C-compatible 2-wire serial bus, fully compliant with standard-mode (100 kHz), fast-mode (400 kHz), and fast-mode plus (1 MHz) timing |
| Supply Voltage | 1.7 V to 5.5 V - enables direct integration with 1.8 V, 2.5 V, 3.3 V, and 5 V microcontroller I/O domains |
| Write Cycle Time | ≤5 ms per byte or page - ensures predictable firmware update latency in real-time systems |
| Endurance & Retention | 1,000,000 erase/write cycles and >200 years data retention - validated for long-life industrial deployments |
| Temperature Range | –40°C to +125°C (Extended grade) - qualified per AEC-Q100 for under-hood automotive applications |
| Standby Current | 3 µA max at +125°C - minimizes quiescent power in battery-backed or energy-constrained systems |
Pinout & Package
8-Lead SOIC (SN) package, 3.90 mm body width, JEDEC MS-012AC compliant; exposed pad not present; RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VSS) | Ground reference | Primary return path for all internal circuitry; must be low-impedance connection to system GND plane |
| 2 (WP) | Hardware write-protect input | Logic-high disables all write operations (000h–3FFh); tied to VSS for normal operation; not supported in CSP variants |
| 3 (SCL) | Serial clock input | Asynchronous master-generated clock; Schmitt-triggered with 50 ns spike suppression; drives internal timing for all I²C transactions |
| 4 (SDA) | Serial data bidirectional I/O | Open-drain output requiring external pull-up; transmits/receives addresses, data, and ACK/NACK signals per I²C spec |
| 5 (VCC) | Power supply input | Accepts 1.7–5.5 V; internal voltage regulation enables stable EEPROM operation across wide input range |
| 6–8 | No-connect (A0, A1, A2) | Unbonded pins - may be left floating or tied to VSS/VCC without functional impact; no address selection capability |
Key Features
| Feature | Design Value |
|---|---|
| 1 MHz I²C clock support | Enables faster configuration writes vs. legacy 400 kHz EEPROMs-reducing boot-time parameter loading by up to 2.5× |
| Schmitt-trigger inputs + 50 ns spike filtering | Ensures reliable communication on electrically noisy PCBs (e.g., motor drives, power converters) without external RC filters |
| 16-byte page write buffer | Allows burst programming of up to 16 bytes per Stop condition-minimizing bus occupancy and host CPU overhead |
| Hardware write-protect (WP pin) | Prevents accidental overwrites during firmware updates or brown-out conditions-critical for safety-critical calibration data |
| AEC-Q100 Grade 1 qualification | Validated for automotive under-hood environments including thermal cycling, vibration, and ESD robustness (≥4 kV HBM) |
Applications
| Automotive Body Control Module | Industrial Sensor Calibration Storage |
|---|---|
Use Scenario: Storing trim values, fault logs, and configuration settings in door module ECUs operating at 125°C ambient. IC Role / Device Role / Timing Role: Nonvolatile parameter memory interfaced directly to 3.3 V MCU I²C port; WP pin hardwired to VSS for runtime writes. Use Value: 1 MHz I²C speed reduces boot-time initialization by 60% vs. 400 kHz alternatives; AEC-Q100 qualification eliminates need for additional qualification testing. |
Use Scenario: Retaining factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent configuration store accessed during power-on reset; WP pin tied to VCC during field deployment to prevent corruption. Use Value: 200-year data retention ensures calibration integrity over full product lifecycle; 1.7 V min VCC supports brown-out operation during AC line dips. |
| Medical Infusion Pump Settings | Smart Energy Meter Firmware Parameters |
Use Scenario: Holding user-defined dosage limits and audit trail metadata in Class II medical devices requiring IEC 60601-1 compliance. IC Role / Device Role / Timing Role: Secure configuration vault with hardware write-lock; accessed only during setup mode via isolated I²C bus. Use Value: ESD >4 kV protects against handling damage during assembly; 1 µA standby current extends battery life in portable units. |
Use Scenario: Storing tariff tables, meter ID, and cryptographic keys in ANSI C12.22-compliant smart meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Tamper-resistant memory with WP-enabled lockdown after commissioning; reads performed at 100 kHz for noise immunity. Use Value: Extended temperature rating (–40°C to +125°C) ensures reliability in unventilated meter cabinets; 1M endurance supports daily firmware updates over 27 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA08-I/ST | Max clock 400 kHz; rated only for –40°C to +85°C (Industrial grade); same 8-lead SOIC package and pinout | Lacks AEC-Q100 qualification and 125°C operation; unsuitable for under-hood automotive or extended-temperature industrial use | Select when cost sensitivity outweighs speed/temp requirements and automotive qualification is unnecessary |
| AT24C08D-SSHM-T | 1 MHz I²C; –40°C to +125°C; 8-lead SOIC; but uses different block addressing (no B1/B0 bits) and lacks WP pin | Requires firmware adaptation for address mapping; no hardware write-lock - relies on software-only protection schemes | Choose if migrating from Atmel-based designs or when WP functionality is managed externally |
Compared with 24AA08-I/ST, the 24FC08-E/ST delivers 2.5× faster writes and extended temperature capability; versus AT24C08D-SSHM-T, it provides hardware write-protection and Microchip's AEC-Q100 validation-reducing system-level safety certification effort.
Availability
24FC08-E/ST is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, and medical infusion pump designs requiring stable component supply, AEC-Q100 compliance, and extended-temperature EEPROM performance.
Supply support for 24FC08-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 24FC08-E/ST belongs to Microchip's 24XX08 family of serial EEPROMs, engineered specifically for robust, low-power, high-reliability nonvolatile storage in automotive, industrial, and medical applications demanding extended temperature operation and I²C speed scalability.
FAQ
What is the maximum I²C clock frequency supported by the 24FC08-E/ST?
The 24FC08-E/ST supports up to 1 MHz I²C clock frequency across its full 1.7 V to 5.5 V supply range and –40°C to +125°C operating temperature. This fast-mode plus capability enables significantly faster parameter writes compared to 400 kHz EEPROMs, reducing boot-time latency in time-critical systems. The 24FC08-E/ST maintains full timing compliance per I²C specification at this rate.
Does the 24FC08-E/ST require external pull-up resistors on SDA and SCL lines?
Yes, the 24FC08-E/ST requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. For 1 MHz operation, a 2 kΩ pull-up to VCC is recommended. The device includes Schmitt-trigger inputs and internal slope control to ensure clean signal edges and noise immunity, but external biasing remains mandatory per I²C bus specifications.
How does the Write-Protect (WP) pin function on the 24FC08-E/ST?
On the 24FC08-E/ST, the WP pin is an active-high hardware lock: when tied to VCC, all write operations (byte and page) to the entire 8-Kbit array (addresses 000h–3FFh) are inhibited while read operations remain fully functional. When tied to VSS or left floating, normal read/write access is enabled. This feature provides deterministic, glitch-immune protection independent of firmware state.
Is the 24FC08-E/ST AEC-Q100 qualified, and what grade does it meet?
Yes, the 24FC08-E/ST is AEC-Q100 qualified and certified to Grade 1 (–40°C to +125°C ambient), making it suitable for automotive under-hood and transmission-control applications. This qualification includes stress testing for thermal cycling, humidity, ESD (≥4 kV HBM), and mechanical shock-ensuring reliability in harsh automotive environments without requiring additional system-level qualification.
What is the page write buffer size and maximum write cycle time for the 24FC08-E/ST?
The 24FC08-E/ST features a 16-byte page write buffer, allowing up to 16 bytes to be loaded into the internal latch before initiating a self-timed write cycle. The maximum write cycle time-whether for a single byte or a full 16-byte page-is 5 ms. During this period, the device does not acknowledge I²C commands, enabling host-side ACK polling to detect completion without fixed delays.
24FC08-E/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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-TSSOP
24FC08-E/ST FAQ
1.How can I place an order for 24FC08-E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24FC08-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 24FC08-E/ST reliable?
The price and inventory of 24FC08-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 24FC08-E/ST is usually 5 days.
3.What payment methods are accepted for 24FC08-E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24FC08-E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24FC08-E/ST?
24FC08-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24FC08-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 24FC08-E/ST?
For technical support, including 24FC08-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24FC08-E/ST requirements.
6.How does Aetrix verify that 24FC08-E/ST is sourced from the original manufacturer or authorized distributors?
All 24FC08-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 24FC08-E/ST meets industry standards.
7.What is the process for return or replacement of 24FC08-E/ST?
All 24FC08-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24FC08-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 24FC08-E/ST part is unused and in its original packaging.
Return procedure for 24FC08-E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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