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Microchip Technology 24LC01BHT-E/MS
- Part No.:
- 24LC01BHT-E/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
24LC01BHT-E/MS.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,082
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Product details
Overview
24LC01BHT-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 industrial and automotive temperature support (–40°C to +125°C), 400 kHz max clock frequency, hardware write-protect for half-array (40h–7Fh), and >1 million erase/write cycles - used in embedded system configuration storage, sensor calibration data retention, and power-fail-safe parameter backup.
For engineers reviewing the 24LC01BHT-E/MS datasheet, 24LC01BHT-E/MS pinout, 24LC01BHT-E/MS application, or 24LC01BHT-E/MS equivalent, key selection considerations include VCC minimum (2.5V), WP-enabled half-array protection, MSOP-8 package footprint, I²C timing compliance at 400 kHz, and automotive-grade reliability for under-hood or industrial control modules.
Technical Context
The 24LC01BHT-E/MS implements a slave-only I²C interface with fixed 7-bit address prefix '1010', no A0–A2 address pins (internally unconnected), and Schmitt-triggered SDA/SCL inputs for noise immunity. It supports byte and page write (up to 8 bytes per page) with internal auto-incrementing address pointer and ACK polling for write-cycle completion detection.
Write protection is controlled solely by the WP pin: tied to VSS enables full-array read/write; tied to VCC locks addresses 40h–7Fh against writes while permitting reads. The device includes VCC threshold detection (<1.5V disable) and output slope control to suppress ground bounce during SDA transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1 Kbit (128 × 8-bit), single-block organization - fits compact configuration data without bank switching logic. |
| VCC Operating Range | 2.5V to 5.5V - compatible with 3.3V and 5V systems; excludes sub-2.5V operation unlike 24AA01H variants. |
| Max Clock Frequency | 400 kHz (at VCC ≥2.5V); 100 kHz only if VCC <2.5V - defines maximum I²C bus throughput in standard-mode designs. |
| Write Endurance | >1,000,000 erase/write cycles - supports frequent recalibration or logging in field-deployed equipment. |
| Data Retention | >200 years at +25°C - ensures long-term validity of factory-programmed identifiers or calibration constants. |
| Standby Current | ≤1 μA at VCC = 5.5V - enables ultra-low-power operation in battery-backed or energy-harvesting nodes. |
| Page Write Time | Typical 3 ms - determines minimum latency between successive page writes; max 5 ms per I²C spec. |
Pinout & Package
24LC01BHT-E/MS uses an 8-lead MSOP (Micro Small Outline Package) with 0.65 mm lead pitch, 3.0 mm × 3.0 mm body, and exposed pad option not specified. Pin 1 is A0 (NC), Pin 4 is VSS, Pin 5 is SDA, Pin 6 is SCL, Pin 7 is WP, Pin 8 is VCC - consistent across SOIC, TSSOP, and MSOP variants per DS22104A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Not connected (NC) | No internal bond; may be left floating or tied to VSS/VCC without functional impact - simplifies PCB routing and eliminates address conflict risk. |
| VSS | Ground reference | Primary return path for all internal circuitry; must be low-impedance to ensure stable EEPROM operation during write cycles. |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up (2 kΩ typical for 400 kHz); carries address, data, and ACK/NACK signals. |
| SCL | Serial Clock input | Master-generated synchronous clock; rising edge samples SDA, falling edge allows SDA transition - defines I²C timing compliance window. |
| WP | Write-Protect control | Logic-high (VCC) enables half-array protection (40h–7Fh); logic-low (VSS) disables protection - provides hardware-level security for critical firmware parameters. |
| VCC | Power supply | 2.5V–5.5V input powering EEPROM core and I/O buffers; internal voltage detector disables writes below ~1.5V to prevent corruption. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | Input hysteresis ≥0.05×VCC - rejects high-frequency noise and EMI without external filtering components. |
| Output slope control | Controlled SDA rise/fall times - eliminates ground bounce that could corrupt adjacent digital signals on shared PCB planes. |
| Hardware write-protect (WP) | Half-array lock (40h–7Fh) activated by VCC-level signal - prevents accidental overwrites of calibrated sensor offsets or security keys. |
| I²C bus compatibility | Fully compliant with standard-mode (100 kHz) and fast-mode (400 kHz) I²C specifications - interoperable with MCU I²C peripherals without protocol translation. |
| ESD protection | ≥4,000V HBM on all pins - withstands handling and board-level ESD events common in industrial assembly environments. |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
Use Scenario: Storing factory-trimmed ADC gain/offset coefficients and temperature compensation tables for pressure or temperature sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed via I²C during power-up initialization; WP pin tied to VCC to lock calibration data permanently. Use Value: Eliminates need for external trimming potentiometers or reprogramming jigs; >200-year data retention ensures lifetime accuracy without recalibration. |
Use Scenario: Saving seat position memory, mirror angle presets, and lighting configuration profiles in automotive door modules operating across –40°C to +125°C ambient. IC Role / Device Role / Timing Role: Automotive-grade EEPROM interfaced to 8-bit microcontroller I²C bus; WP pin tied to VSS for full-array read/write during user setup. Use Value: Meets AEC-Q100 Grade 1 requirements via E-temp rating; 1M endurance supports daily user adjustments over 10+ vehicle years. |
| Medical Device Parameter Backup | Smart Energy Meter Firmware Settings |
Use Scenario: Retaining dose limits, alarm thresholds, and user preferences in portable infusion pumps where power loss must not erase safety-critical settings. IC Role / Device Role / Timing Role: Low-power (1 μA standby) nonvolatile memory accessed during boot; write operations guarded by WP and ACK polling to ensure integrity. Use Value: Sub-1 mA active current extends battery life; hardware write-protect prevents firmware corruption during brown-out conditions. |
Use Scenario: Storing tariff schedules, meter ID, CT/PT ratios, and communication credentials in utility-grade electricity meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Tamper-resistant configuration store with WP enabled during normal operation; accessed via isolated I²C bus to prevent fault propagation. Use Value: >4 kV ESD rating withstands lightning-induced surges on meter communication lines; 2.5V min VCC ensures operation during AC mains dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA01HT-I/MS | Lower VCC min (1.7V), same 1 Kbit size and MSOP-8 package; no automotive temp grade. | Suitable for battery-powered IoT sensors down to 1.8V but lacks –40°C to +125°C qualification. | Select when operating below 2.5V is required and automotive temperature range is unnecessary. |
| AT24C01D-SSHM-T | Same 1 Kbit, 2.5–5.5V, I²C-compatible, MSOP-8; rated –40°C to +85°C (industrial only). | Lacks automotive temperature support and half-array WP; uses standard I²C addressing (A0–A2 configurable). | Choose when multi-device I²C bus addressing is needed and E-temp is not mandated. |
Compared with 24LC01BHT-E/MS, the 24AA01HT-I/MS enables lower-voltage operation but sacrifices automotive qualification, while the AT24C01D-SSHM-T offers address pin flexibility at the cost of reduced temperature range and no hardware half-array protection - making 24LC01BHT-E/MS optimal for safety-critical, high-reliability automotive and industrial deployments.
Availability
24LC01BHT-E/MS is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, medical device parameter backup, and smart energy meter firmware settings requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 24LC01BHT-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 leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC01BHT-E/MS belongs to Microchip's 24LCxxB family of I²C serial EEPROMs designed specifically for robust, low-power, and automotive-qualified nonvolatile data storage in space-constrained embedded systems.
FAQ
What is the minimum supply voltage required for reliable operation of the 24LC01BHT-E/MS?
The 24LC01BHT-E/MS requires a minimum VCC of 2.5V for guaranteed operation across its full temperature range (–40°C to +125°C). Operation below 2.5V is not specified and may result in unreliable writes or read failures. This distinguishes it from the 24AA01H series, which supports down to 1.7V but lacks automotive temperature rating. Always verify VCC stability during brown-out conditions in your design.
How does the WP pin function on the 24LC01BHT-E/MS, and what memory region does it protect?
On the 24LC01BHT-E/MS, the WP (Write-Protect) pin enables hardware-level protection of memory addresses 40h–7Fh (64 bytes) when tied to VCC. When WP = VSS, full-array read/write is permitted. This half-array lock prevents accidental overwrites of critical calibration or security data while allowing other regions to remain writable - a feature not present in standard AT24C01 variants.
Is the 24LC01BHT-E/MS pin-compatible with other 8-pin MSOP EEPROMs like the AT24C01D-SSHM-T?
The 24LC01BHT-E/MS shares the same 8-lead MSOP package outline and pinout (VSS, SDA, SCL, WP, VCC on Pins 4–8) with the AT24C01D-SSHM-T, enabling direct PCB footprint reuse. However, A0–A2 pins are NC on 24LC01BHT-E/MS but functional address inputs on the AT24C01D, so I²C addressing behavior differs - requiring firmware validation if substituted in multi-device buses.
What is the maximum supported I²C clock frequency for the 24LC01BHT-E/MS, and under what conditions?
The 24LC01BHT-E/MS supports up to 400 kHz I²C clock frequency when VCC is 2.5V or higher. At VCC <2.5V, maximum clock rate drops to 100 kHz per specification. This fast-mode capability enables faster configuration loading in time-sensitive applications, provided SDA/SCL rise/fall times meet tR/tF ≤300 ns (for VCC ≥2.5V) and bus capacitance remains ≤400 pF.
Does the 24LC01BHT-E/MS require external pull-up resistors on the SDA and SCL lines, and what values are recommended?
Yes, the 24LC01BHT-E/MS has open-drain SDA and SCL outputs and requires external pull-up resistors. For 400 kHz operation, a 2 kΩ resistor to VCC is recommended; for 100 kHz, 10 kΩ is typical. Resistor value must balance rise time (per I²C spec) against bus loading - especially critical in multi-slave systems where total capacitance affects timing margins.
24LC01BHT-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:
- 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-MSOP
24LC01BHT-E/MS FAQ
1.How can I place an order for 24LC01BHT-E/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC01BHT-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 24LC01BHT-E/MS reliable?
The price and inventory of 24LC01BHT-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 24LC01BHT-E/MS is usually 5 days.
3.What payment methods are accepted for 24LC01BHT-E/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC01BHT-E/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC01BHT-E/MS?
24LC01BHT-E/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC01BHT-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 24LC01BHT-E/MS?
For technical support, including 24LC01BHT-E/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC01BHT-E/MS requirements.
6.How does Aetrix verify that 24LC01BHT-E/MS is sourced from the original manufacturer or authorized distributors?
All 24LC01BHT-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 24LC01BHT-E/MS meets industry standards.
7.What is the process for return or replacement of 24LC01BHT-E/MS?
All 24LC01BHT-E/MS units undergo pre-shipment inspection (PSI). If there is an issue with 24LC01BHT-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 24LC01BHT-E/MS part is unused and in its original packaging.
Return procedure for 24LC01BHT-E/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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