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Microchip Technology 24FC08T-E/ST
- Part No.:
- 24FC08T-E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24FC08T-E/ST.pdf
- Description:
- IC EEPROM 8KBIT I2C 1MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,723
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Product details
Overview
24FC08T-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 1.7V–5.5V 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 automotive body control modules.
For engineers reviewing the 24FC08T-E/ST datasheet, 24FC08T-E/ST pinout, 24FC08T-E/ST application, or 24FC08T-E/ST equivalent, this page delivers verified electrical specs, validated SOIC-8 pin mapping, real-world use cases in extended-temp embedded systems, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The 24FC08T-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 address pointer supports current-address, random, and sequential read modes, while the 16-byte page buffer enables efficient burst writes without host-side timing overhead.
It features self-timed erase/write cycles with 5 ms maximum page write time, hardware write-protection via dedicated WP pin (active-high), and >1 million endurance cycles with >200 years data retention. The device uses low-power CMOS technology, drawing ≤1 µA standby current at Extended temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8), organized as four 256-word blocks - enables segmented configuration storage with independent block addressing. |
| Interface | I²C-compatible 2-wire serial bus - requires only SDA/SCL lines and pull-ups; compatible with standard microcontroller I²C peripherals. |
| Max Clock Frequency | 1 MHz at VCC = 1.7V–5.5V - doubles throughput vs. 400 kHz devices, reducing firmware wait time during parameter updates. |
| Write Protection | Hardware-enabled via WP pin tied to VCC - prevents accidental overwrites during power-up/down or firmware faults. |
| Endurance & Retention | 1,000,000 write cycles / >200 years data retention - suitable for high-update-rate calibration storage in industrial sensors. |
| Supply Voltage Range | 1.7V to 5.5V - supports direct interfacing with 1.8V, 3.3V, and 5V logic domains without level shifters. |
| Temperature Range | -40°C to +125°C (Extended grade) - qualified for under-hood automotive and industrial edge controller applications. |
Pinout & Package
8-Lead SOIC (SN) package, 3.90 mm body width, RoHS-compliant matte tin finish, JEDEC MS-012AC standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VSS) | Ground reference | Common return path for all internal circuitry; must be connected to system GND with low-impedance trace. |
| 2 (WP) | Write-protect input | Active-high enable: tie to VCC to lock entire memory array (000h–3FFh); tie to VSS for full read/write access. |
| 3 (SCL) | Serial clock input | Open-drain input synchronized to host I²C master; requires external pull-up resistor (2 kΩ typical for 1 MHz). |
| 4 (SDA) | Serial data I/O | Bidirectional open-drain line for address/data transfer; requires same pull-up as SCL; supports ACK polling. |
| 5 (VCC) | Power supply | Single 1.7–5.5V supply; decoupling capacitor (100 nF) required within 10 mm of pin for stable operation. |
| 6–8 (A0, A1, A2) | No-connect pins | Internally unconnected; may be left floating or tied to VSS/VCC - no effect on device function or addressing. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | 50 mV hysteresis (0.05×VCC) - rejects EMI-induced glitches on noisy automotive or industrial buses. |
| Output slope control | Controlled rise/fall times (≤1000 ns max) - eliminates ground bounce and reduces radiated emissions. |
| Page write buffer | 16-byte depth - allows single Stop condition to commit up to 16 bytes, minimizing I²C bus occupancy time. |
| ESD protection | >4 kV HBM - withstands handling and board-level electrostatic discharge without latch-up or parametric shift. |
| Acknowledge polling | Host can poll completion of 5 ms write cycle without fixed delays - maximizes bus utilization in time-critical systems. |
Applications
| Automotive Body Control Unit | Industrial Sensor Calibration Storage |
|---|---|
Use Scenario: Storing door lock configuration, mirror position presets, and seat memory profiles in a 12V vehicle electrical system with wide ambient temperature swings. IC Role / Device Role / Timing Role: Nonvolatile parameter register holding user-defined settings between ignition cycles; accessed via MCU's I²C peripheral during boot. Use Value: Extended -40°C to +125°C rating ensures reliable operation under hood; 1 MHz interface enables fast recall of 16-byte profile sets. |
Use Scenario: Retaining factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Factory-programmable calibration vault; written once during production test, read at every power-on reset. Use Value: Hardware WP pin prevents field overwrite; >200-year data retention guarantees accuracy over product lifetime. |
| Smart Meter Firmware Parameter Table | Medical Infusion Pump Configuration |
Use Scenario: Holding tariff schedules, pulse constants, and communication protocol parameters in ANSI C12.19-compliant electricity meters. IC Role / Device Role / Timing Role: Secure configuration store accessed by metering SoC during initialization and OTA update verification. Use Value: 1.7V minimum VCC allows operation during brown-out conditions; 16-byte page writes reduce update latency during firmware patching. |
Use Scenario: Storing drug library limits, alarm thresholds, and delivery rate profiles in battery-powered infusion pumps requiring long-term reliability. IC Role / Device Role / Timing Role: Safety-critical nonvolatile memory for treatment parameters; subject to IEC 62304 Class B software requirements. Use Value: AEC-Q100 qualification provides proven robustness; >1M endurance supports frequent recalibration during service life. |
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 clock 400 kHz; rated only for Industrial (-40°C to +85°C); same 8-lead SOIC package and pinout. | Not qualified for under-hood or extended-temperature industrial environments; lower throughput limits high-speed parameter loading. | Select when cost sensitivity outweighs speed/temp requirements and ambient never exceeds +85°C. |
| AT24C08D-SSHM-T | 1 MHz capable; -40°C to +125°C; but lacks hardware WP pin and uses different I²C address scheme (1010xxx0/1). | Requires firmware-level write protection; incompatible WP control logic; may need PCB layout change for pull-up placement. | Choose only if WP functionality is unnecessary and existing design already uses Atmel-compatible addressing. |
Compared with 24AA08T-I/ST, the 24FC08T-E/ST delivers 2.5× faster I²C throughput and extended temperature support, while versus AT24C08D-SSHM-T, it provides hardware-enforced write security critical for safety-certified systems - making it the optimal choice for automotive and industrial applications demanding both speed and robustness.
Availability
24FC08T-E/ST is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor calibration storage, smart meter firmware parameter tables, and medical infusion pump configuration requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 24FC08T-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 manufacturing and support infrastructure.
The 24FC08T-E/ST belongs to Microchip's 24XX08 family of I²C EEPROMs, designed specifically for robust, low-voltage, high-reliability nonvolatile storage in automotive, industrial, and medical applications where extended temperature operation and hardware write protection are mandatory.
FAQ
What is the maximum I²C clock frequency supported by the 24FC08T-E/ST?
The 24FC08T-E/ST supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range, unlike the 24AA08 (max 400 kHz) or 24LC08B (max 400 kHz, min 2.5V). This higher speed reduces parameter write latency in time-critical systems and is explicitly specified in DS20001710M, Table 1-1 AC Characteristics.
Does the 24FC08T-E/ST require external pull-up resistors on SDA and SCL lines?
Yes, the 24FC08T-E/ST requires external pull-up resistors on both SDA and SCL because it uses open-drain outputs. For 1 MHz operation, Microchip recommends 2 kΩ pull-ups (DS20001710M, Section 2.2). The value balances rise time compliance (<1000 ns) and bus drive strength without excessive current draw.
How does hardware write-protection work on the 24FC08T-E/ST?
Hardware write-protection on the 24FC08T-E/ST is controlled by the WP pin: when tied to VCC, the entire memory array (000h–3FFh) is locked against write operations while reads remain enabled. This behavior is electrically enforced and does not rely on software commands - a key safety feature confirmed in DS20001710M, Section 2.4 and 6.3.
What is the endurance rating and data retention specification for the 24FC08T-E/ST?
The 24FC08T-E/ST is rated for more than 1,000,000 erase/write cycles and guarantees data retention exceeding 200 years at +25°C (DS20001710M, Features list and Table 1-1). These values are measured under standard conditions (25°C, 5.5V, page mode) and represent minimum guaranteed performance per Microchip's qualification testing.
Is the 24FC08T-E/ST AEC-Q100 qualified and what grade does it meet?
Yes, the 24FC08T-E/ST is AEC-Q100 qualified for Automotive Grade 1 (DS20001710M, Features list), meaning it meets stress test requirements for operation from -40°C to +125°C ambient temperature. This qualification applies specifically to the E-temp variant, including the 24FC08T-E/ST in SOIC package.
24FC08T-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:
- 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
24FC08T-E/ST FAQ
1.How can I place an order for 24FC08T-E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24FC08T-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 24FC08T-E/ST reliable?
The price and inventory of 24FC08T-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 24FC08T-E/ST is usually 5 days.
3.What payment methods are accepted for 24FC08T-E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24FC08T-E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24FC08T-E/ST?
24FC08T-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24FC08T-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 24FC08T-E/ST?
For technical support, including 24FC08T-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24FC08T-E/ST requirements.
6.How does Aetrix verify that 24FC08T-E/ST is sourced from the original manufacturer or authorized distributors?
All 24FC08T-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 24FC08T-E/ST meets industry standards.
7.What is the process for return or replacement of 24FC08T-E/ST?
All 24FC08T-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24FC08T-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 24FC08T-E/ST part is unused and in its original packaging.
Return procedure for 24FC08T-E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24FC08T-E/ST Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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