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Microchip Technology 24LC01BT-E/MS
- Part No.:
- 24LC01BT-E/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
24LC01BT-E/MS.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,583
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Product details
Overview
24LC01BT-E/MS from Microchip Technology Inc. is a 1 Kbit I²C-compatible serial EEPROM organized as 128 × 8-bit memory, operating from 2.5V to 5.5V with 400 kHz max clock frequency, 5 ms max page write time, and industrial/extended temperature support (–40°C to +125°C). It features hardware write-protection via the WP pin and is packaged in an 8-lead MSOP.
For engineers reviewing the 24LC01BT-E/MS datasheet, 24LC01BT-E/MS pinout, 24LC01BT-E/MS application, or 24LC01BT-E/MS equivalent, key selection criteria include VCC range compatibility (2.5–5.5V), extended-temp operation up to +125°C, 8-byte page write buffer, Schmitt-trigger noise immunity, and MSOP package footprint for space-constrained embedded systems.
Technical Context
The 24LC01BT-E/MS implements a 2-wire I²C interface with fixed 7-bit device address (1010xxx) and R/W bit control, supporting byte and page write modes. Its internal architecture includes an 8-byte page latch, EEPROM array, and HV generator for erase/write operations.
It uses Schmitt-trigger inputs on SDA/SCL with 0.05×VCC hysteresis and slope-controlled outputs to suppress ground bounce. Write protection is implemented via a dedicated WP pin tied to VCC to disable all writes while permitting reads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Kbit (128 × 8-bit), sufficient for small configuration data, calibration constants, or boot parameters in microcontroller-based systems. |
| VCC Range | 2.5V to 5.5V - compatible with standard 3.3V and 5V logic rails; excludes sub-2.5V operation unlike 24AA01/24FC01 variants. |
| Max Clock Frequency | 400 kHz - supports high-speed I²C mode; timing validated for THIGH ≥600 ns and TLOW ≥1300 ns at VCC ≥2.5V. |
| Page Write Buffer | 8 bytes - enables efficient burst writes within a single page boundary (addresses 00–7F); crossing boundaries causes wraparound. |
| Write Cycle Time | 5 ms maximum - defines minimum interval between write commands; self-timed, eliminating need for external delay polling in basic use cases. |
| Endurance & Retention | 1 million erase/write cycles and >200 years data retention - suitable for infrequent but mission-critical nonvolatile storage in industrial control and automotive modules. |
| Temperature Range | –40°C to +125°C (Extended grade) - qualified for under-hood automotive, motor drives, and harsh-environment industrial sensors. |
Pinout & Package
8-Lead MSOP (Micro Small Outline Package) with exposed pad option; pin 1 marked by notch or dot; body dimensions 3.0 mm × 3.0 mm × 1.1 mm (max height).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection; may be left floating or tied to VSS/VCC without affecting operation. |
| A1 | Address Input | No internal connection; unused per device architecture; no impact on addressing or functionality. |
| A2 | Address Input | No internal connection; reserved for future family expansion but inactive in 24LC01B series. |
| VSS | Ground Reference | Primary return path for all internal circuits; must be low-impedance connection to system GND plane. |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up resistor (2 kΩ typical for 400 kHz). |
| SCL | Serial Clock Input | Input-only clock line synchronized to host controller; Schmitt-trigger input ensures noise immunity on rising/falling edges. |
| WP | Write-Protect Control | Active-high enable: tied to VCC disables all write operations (00–7F) while preserving read access. |
| VCC | Power Supply | Single-supply input; must be decoupled with 0.1 µF ceramic capacitor placed near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write-Protection | WP pin enables system-level firmware lockout without software overhead - critical for preventing accidental overwrites in field-deployed devices. |
| Schmitt Trigger Inputs | 0.05×VCC hysteresis on SDA/SCL eliminates false triggering from EMI or slow-rising signals in noisy industrial environments. |
| Page Write Capability | 8-byte buffer reduces I²C transaction count by up to 8× versus byte-write mode - improves bus efficiency and lowers host CPU load. |
| Low Standby Current | ≤1 µA at I-temp (–40°C to +85°C) and ≤5 µA at E-temp (–40°C to +125°C) - extends battery life in always-on sensor nodes. |
| AEC-Q100 Qualified | Automotive-grade reliability validation confirms suitability for safety-critical ECUs, including engine control and ADAS subsystems. |
Applications
| Automotive Body Control Module | Industrial Sensor Calibration Storage |
|---|---|
Use Scenario: Storing door lock configuration, mirror position presets, and lighting profiles in a vehicle body control unit. IC Role / Device Role / Timing Role: Nonvolatile configuration EEPROM interfaced via I²C to an 8-bit MCU; accessed during power-up and user adjustment events. Use Value: Enables persistent personalization without backup battery; WP pin prevents corruption during firmware updates or voltage transients. | Use Scenario: Retaining factory-calibrated offset/gain coefficients for analog temperature and pressure sensors in a programmable transmitter. IC Role / Device Role / Timing Role: I²C slave device storing 128 bytes of trim data; written once during production test and read at startup. Use Value: Eliminates manual potentiometer adjustment; 1M-cycle endurance supports re-calibration in service depots. |
| Medical Infusion Pump Settings | Smart Energy Meter Firmware Parameters |
Use Scenario: Holding dose limits, alarm thresholds, and user preferences in a Class II medical infusion pump with regulatory traceability requirements. IC Role / Device Role / Timing Role: Secure configuration store accessed only by certified bootloader; WP pin hardwired to VCC after programming. Use Value: Prevents unauthorized runtime modification; >200-year data retention meets FDA long-term device lifecycle expectations. | Use Scenario: Storing tariff schedules, meter ID, and cryptographic keys in a utility-grade smart electricity meter operating in outdoor enclosures. IC Role / Device Role / Timing Role: Extended-temperature EEPROM (–40°C to +125°C) communicating over isolated I²C to metrology SoC. Use Value: Guarantees parameter integrity across thermal cycling; RoHS-compliant MSOP package supports lead-free reflow assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC01B-I/MS | Same 1 Kbit capacity, MSOP package, and 400 kHz speed, but rated only for –40°C to +85°C (Industrial grade). | Lacks extended-temperature qualification; unsuitable for under-hood or high-ambient industrial deployments. | Select when cost sensitivity outweighs extended-temp requirement and ambient stays below +85°C. |
| 24AA01T-I/MS | Lower VCC min (1.7V), same 1 Kbit and MSOP, but max clock 400 kHz only above 2.5V; not AEC-Q100 qualified. | Enables single-cell Li-ion or coin-cell operation; lacks automotive qualification and extended-temp support. | Choose for ultra-low-voltage portable designs where 24LC01BT-E/MS's 2.5V minimum is prohibitive. |
Compared with 24LC01B-I/MS, the 24LC01BT-E/MS adds extended-temperature operation and AEC-Q100 qualification at identical speed and package; versus 24AA01T-I/MS, it trades 1.7V operation for guaranteed 2.5–5.5V robustness and automotive compliance - making it the preferred choice for thermally demanding, safety-relevant systems.
Availability
24LC01BT-E/MS is available at Aetrix Electronics and suitable for automotive body control, industrial sensor calibration, medical infusion pump settings, and smart energy meter firmware parameters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 24LC01BT-E/MS 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory products, with global manufacturing and quality certifications including ISO/TS 16949 and AEC-Q200.
The 24LC01B family is designed for reliable, low-power nonvolatile data storage in resource-constrained embedded systems - emphasizing I²C simplicity, extended-temperature resilience, and automotive-grade reliability.
FAQ
What is the maximum clock frequency supported by the 24LC01BT-E/MS?
The 24LC01BT-E/MS supports a maximum I²C clock frequency of 400 kHz across its full VCC range (2.5V to 5.5V) and temperature range (–40°C to +125°C). This is confirmed in the Device Selection Table and AC Characteristics section of DS20001711M, where FCLK is specified as 400 kHz for 24LC01B devices. Unlike the 24FC01 variant, it does not support 1 MHz operation.
Does the 24LC01BT-E/MS require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC01BT-E/MS requires external pull-up resistors on both SDA and SCL lines because these pins are open-drain. The datasheet recommends a 2 kΩ pull-up for 400 kHz operation. The value balances rise time (TR ≤300 ns) against bus loading and current consumption, especially critical in multi-node I²C systems.
How does the WP pin function on the 24LC01BT-E/MS?
The WP (Write-Protect) pin on the 24LC01BT-E/MS is an active-high input: when tied to VCC, it disables all write operations (byte and page) to the entire memory array (addresses 00–7F), while read operations remain fully functional. When tied to VSS or left floating, normal read/write operation is enabled. This hardware-level protection prevents accidental or malicious overwrites.
What is the page write capability of the 24LC01BT-E/MS?
The 24LC01BT-E/MS features an 8-byte page write buffer, allowing up to eight sequential bytes to be loaded into the buffer before initiating the internal write cycle. Page writes must remain within a single physical page (addresses aligned to 00–07, 08–0F, etc.); crossing boundaries causes wraparound instead of spanning pages. This reduces I²C transactions and improves throughput versus byte-write mode.
Is the 24LC01BT-E/MS qualified for automotive applications?
Yes, the 24LC01BT-E/MS is explicitly stated as "Automotive AEC-Q100 Qualified" in the Features section of DS20001711M. Its extended temperature rating (–40°C to +125°C) and qualification testing confirm suitability for automotive subsystems such as body control modules, lighting controllers, and sensor interfaces where reliability under thermal stress is mandatory.
24LC01BT-E/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 3.5 µs
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
24LC01BT-E/MS FAQ
1.How can I place an order for 24LC01BT-E/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC01BT-E/MS 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 24LC01BT-E/MS reliable?
The price and inventory of 24LC01BT-E/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC01BT-E/MS is usually 5 days.
3.What payment methods are accepted for 24LC01BT-E/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC01BT-E/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC01BT-E/MS?
24LC01BT-E/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC01BT-E/MS 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 24LC01BT-E/MS?
For technical support, including 24LC01BT-E/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC01BT-E/MS requirements.
6.How does Aetrix verify that 24LC01BT-E/MS is sourced from the original manufacturer or authorized distributors?
All 24LC01BT-E/MS 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 24LC01BT-E/MS meets industry standards.
7.What is the process for return or replacement of 24LC01BT-E/MS?
All 24LC01BT-E/MS units undergo pre-shipment inspection (PSI). If there is an issue with 24LC01BT-E/MS, 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 24LC01BT-E/MS part is unused and in its original packaging.
Return procedure for 24LC01BT-E/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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