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Microchip Technology 24LC08BT-E/MC
- Part No.:
- 24LC08BT-E/MC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
24LC08BT-E/MC.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,560
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Product details
Overview
24LC08BT-E/MC from Microchip Technology is an 8-Kbit I²C-compatible serial EEPROM organized as four 256 × 8-bit blocks, operating from 2.5V to 5.5V with 400 kHz max clock frequency, 5 ms max page write time, and hardware write-protection via the WP pin. It supports industrial (–40°C to +85°C) and extended (–40°C to +125°C) temperature ranges in an 8-lead DFN package and is used for parameter storage in embedded controllers, sensor calibration data retention, and configuration memory in power management ICs.
For engineers reviewing the 24LC08BT-E/MC datasheet, 24LC08BT-E/MC pinout, 24LC08BT-E/MC application, or 24LC08BT-E/MC equivalent, key selection criteria include VCC range compatibility (2.5V–5.5V), I²C timing compliance at 400 kHz, WP pin functionality, endurance (>1 million cycles), and DFN package thermal/mechanical fit in space-constrained PCB layouts.
Technical Context
The 24LC08BT-E/MC 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 write buffer, address pointer logic, and HV generator for EEPROM programming - all managed by on-chip control logic without external high-voltage support.
It uses a fixed 4-bit device identifier (1010b) with 2-bit block select (B1/B0) and R/W bit for addressing across its 1K-word (000h–3FFh) memory space. Write protection is implemented via direct-level sensing of the WP pin, disabling all write operations when tied to VCC - a hardware-enforced feature independent of I²C commands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 × 8-bit), organized as four 256-word blocks - enables segmented firmware/config storage with independent block access. |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V systems; excludes sub-2.5V operation unlike 24AA08/24FC08 variants. |
| Max Clock Frequency | 400 kHz - defines maximum I²C bus throughput; requires SCL low time ≥1300 ns and high time ≥600 ns under 2.5V–5.5V. |
| Page Write Time | 5 ms maximum - determines minimum delay between consecutive page writes; impacts firmware update latency in host software. |
| Endurance | 1,000,000 erase/write cycles - ensures reliable field operation over 10+ years in typical configuration storage use cases. |
| Data Retention | 200 years at 85°C - guarantees long-term integrity of stored calibration or security keys without refresh. |
| Write Protection | Hardware-enabled via WP pin - prevents accidental overwrites during power-up/down or firmware glitches without software intervention. |
Pinout & Package
24LC08BT-E/MC is housed in an 8-lead DFN (2 mm × 3 mm, 0.5 mm pitch) package with exposed pad. Pin 1 is top-left (marked), and the exposed pad may be connected to VSS or left floating per Microchip's recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Return path for all internal circuitry; must be low-impedance connection to system GND plane. |
| WP | Write-protect input | Logic-high disables all write operations; tied to VCC for permanent protection, VSS for full read/write access. |
| SCL | Serial clock input | Asynchronous master-generated clock; open-drain requires external pull-up (2 kΩ typical for 400 kHz). |
| SDA | Serial data I/O | Bidirectional open-drain line; shares bus with other I²C devices; requires same pull-up as SCL. |
| VCC | Power supply | Must be stable 2.5V–5.5V; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | 5% VCC hysteresis (min) - rejects noise spikes up to 50 ns, enabling robust operation in electrically noisy industrial environments. |
| Output slope control | Controlled rise/fall times (≤300 ns) - eliminates ground bounce and EMI during signal transitions on shared PCB traces. |
| 16-byte page write buffer | Reduces I²C transaction count by up to 16× vs. byte-write mode - lowers host CPU overhead and bus occupancy. |
| Self-timed erase/write cycle | No external timing components needed - simplifies design and eliminates risk of premature command termination due to timing errors. |
| ESD protection >4 kV HBM | Withstands handling and board-level ESD events without latch-up or parametric shift - reduces need for external TVS diodes. |
Applications
| Industrial Sensor Calibration | Smart Power Supply Configuration |
|---|---|
|
Use Scenario: Storing factory-trimmed offset/gain coefficients and temperature compensation tables for analog sensor front-ends. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed during power-on initialization via I²C; WP pin held low during calibration, high during field operation. Use Value: Enables one-time calibration at manufacturing while preventing runtime corruption - critical for metrology-grade accuracy over temperature and lifetime. |
Use Scenario: Holding output voltage/current setpoints, protection thresholds, and startup sequencing parameters in digitally controlled DC-DC modules. IC Role / Device Role / Timing Role: I²C slave storing persistent settings; accessed by PMBus-compatible controller during boot and runtime reconfiguration. Use Value: Allows field-upgradable power profiles without firmware changes; WP pin ensures safety-critical limits remain immutable after commissioning. |
| Embedded Controller Parameter Storage | Medical Device Usage Logs |
|
Use Scenario: Saving user preferences, communication settings, and operational history in microcontroller-based HVAC or motor drives. IC Role / Device Role / Timing Role: Low-power I²C EEPROM interfaced directly to MCU GPIOs; accessed during idle periods to minimize active current draw. Use Value: Delivers 1 µA standby current and 1 mA read current - extends battery life in portable or energy-harvesting applications. |
Use Scenario: Recording timestamped usage events, error codes, and maintenance intervals in Class II medical equipment requiring audit trails. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory with 200-year data retention; WP pin tied high after initial provisioning to prevent log deletion. Use Value: Meets IEC 62304 data integrity requirements for safety-critical logs without software write-locking complexity. |
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/MC | Wider VCC range (1.7V–5.5V); lower 100 kHz max clock below 2.5V; same 8-lead DFN package and pinout. | Supports battery-powered systems down to 1.7V; unsuitable where strict 2.5V+ operation is required for noise immunity or legacy bus design. | Select when ultra-low-voltage operation is mandatory and 400 kHz speed is not required across full VCC range. |
| 24FC08T-E/MC | 1 MHz max clock; 1.7V–5.5V VCC; identical memory map and WP functionality; same DFN package. | Enables faster firmware updates and high-throughput logging; requires tighter AC timing compliance and higher-speed pull-ups. | Select when system I²C bus runs at 1 MHz and host controller supports enhanced timing margins. |
Compared with 24LC08BT-E/MC, the 24AA08T-I/MC trades speed for wider voltage flexibility, while the 24FC08T-E/MC delivers higher bandwidth at the cost of stricter layout and timing validation - making 24LC08BT-E/MC the optimal balance for 3.3V/5V industrial designs requiring proven 400 kHz reliability.
Availability
24LC08BT-E/MC is available at Aetrix Electronics and suitable for industrial sensor calibration, smart power supply configuration, and embedded controller parameter storage requiring stable component supply, extended temperature operation, and RoHS-compliant packaging.
Supply support for 24LC08BT-E/MC 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, and Flash-IP solutions, delivering high-reliability semiconductor products for industrial, automotive, and consumer markets since 1989.
The 24LC08B family is designed specifically for cost-sensitive, space-constrained applications needing robust, low-power I²C EEPROM with hardware write protection - targeting industrial controls, medical instrumentation, and power management subsystems.
FAQ
What is the operating voltage range for the 24LC08BT-E/MC?
The 24LC08BT-E/MC operates from 2.5V to 5.5V - it does not support voltages below 2.5V, unlike the 24AA08 or 24FC08 variants. This ensures stable I²C signaling and write-cycle margin in 3.3V and 5V systems, but excludes single-cell Li-ion or coin-cell applications requiring sub-2.5V operation.
Does the 24LC08BT-E/MC support page write operations?
Yes, the 24LC08BT-E/MC supports 16-byte page write operations, reducing I²C transaction overhead compared to byte writes. Each page write completes in ≤5 ms, and the internal address pointer auto-increments within the selected 256-word block - provided the write does not cross physical page boundaries (00h–0Fh, 10h–1Fh, etc.).
How is hardware write protection implemented on the 24LC08BT-E/MC?
Hardware write protection on the 24LC08BT-E/MC is enabled by tying the WP pin to VCC, which disables all write and erase operations while allowing unrestricted reads. When WP is tied to VSS (or left floating, per datasheet), full read/write access is granted. This level-sensitive control requires no I²C command and remains active across power cycles.
What package type is used for the 24LC08BT-E/MC?
The 24LC08BT-E/MC uses an 8-lead DFN package (2 mm × 3 mm, 0.5 mm pitch) with exposed pad. This compact, thermally efficient package supports reflow soldering and is suitable for high-density PCB layouts in industrial and medical equipment where board space is constrained.
Is the 24LC08BT-E/MC qualified for automotive applications?
No, the 24LC08BT-E/MC is not AEC-Q100 qualified. While the broader 24XX08 family includes AEC-Q100–qualified variants (e.g., 24LC08B-IMC), the -E/MC suffix denotes extended temperature grade (–40°C to +125°C) but not automotive qualification. For automotive use, engineers must select explicitly AEC-Q100–rated versions with appropriate part numbering and documentation.
24LC08BT-E/MC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 256 x 8 x 4
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x3)
24LC08BT-E/MC FAQ
1.How can I place an order for 24LC08BT-E/MC through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC08BT-E/MC 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 24LC08BT-E/MC reliable?
The price and inventory of 24LC08BT-E/MC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC08BT-E/MC is usually 5 days.
3.What payment methods are accepted for 24LC08BT-E/MC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC08BT-E/MC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC08BT-E/MC?
24LC08BT-E/MC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC08BT-E/MC 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 24LC08BT-E/MC?
For technical support, including 24LC08BT-E/MC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC08BT-E/MC requirements.
6.How does Aetrix verify that 24LC08BT-E/MC is sourced from the original manufacturer or authorized distributors?
All 24LC08BT-E/MC 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 24LC08BT-E/MC meets industry standards.
7.What is the process for return or replacement of 24LC08BT-E/MC?
All 24LC08BT-E/MC units undergo pre-shipment inspection (PSI). If there is an issue with 24LC08BT-E/MC, 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 24LC08BT-E/MC part is unused and in its original packaging.
Return procedure for 24LC08BT-E/MC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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