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Microchip Technology 24LC01BH-I/SN
- Part No.:
- 24LC01BH-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC01BH-I/SN.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:755
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Product details
Overview
24LC01BH-I/SN from Microchip Technology Inc. is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM designed for low-voltage embedded systems requiring nonvolatile data storage. It operates from 2.5V to 5.5V, supports up to 400 kHz clock frequency, features hardware write-protection for the upper half-array (40h–7Fh), and delivers ≤1 μA standby current at industrial temperature range (−40°C to +85°C). It is commonly used in set-top boxes for configuration parameter retention.
For engineers reviewing the 24LC01BH-I/SN datasheet, 24LC01BH-I/SN pinout, 24LC01BH-I/SN application, or 24LC01BH-I/SN equivalent, this page provides verified electrical parameters, package-specific terminal mapping, real-world use scenarios, and validated alternative parts - all confirmed against Microchip's DS22104A datasheet and official packaging documentation.
Technical Context
The 24LC01BH-I/SN implements a true 2-wire I²C interface with Schmitt-trigger inputs on SDA and SCL for noise immunity, plus output slope control to suppress ground bounce. Its internal address counter enables sequential reads across the full 128-byte memory space without re-addressing.
Write operations support both byte-write (1 byte per cycle) and page-write (up to 8 bytes per cycle, with automatic address increment within the same physical page). The WP pin enables hardware-level protection of addresses 40h–7Fh when pulled high, while A0–A2 pins are unconnected and may be left floating or tied to VSS/VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Kbit (128 × 8-bit array), sufficient for firmware calibration tables or device ID storage |
| VCC operating range | 2.5V to 5.5V - compatible with 3.3V and 5V logic domains without level shifting |
| Max I²C clock frequency | 400 kHz - enables fast configuration loading in time-critical boot sequences |
| Write endurance | 1 million erase/write cycles - supports daily field updates over 27+ years |
| Data retention | 200 years at +25°C - ensures long-term reliability in unpowered storage applications |
| Standby current | ≤1 μA at −40°C to +85°C - critical for battery-backed or energy-harvesting systems |
| Page write time | Typical 3 ms - allows efficient bulk parameter saves without blocking host MCU |
Pinout & Package
24LC01BH-I/SN uses an 8-lead plastic small-outline (SOIC) package (SN suffix), measuring 3.90 mm body width, with gull-wing leads and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | No-connect (NC) | Internally unconnected; may float or tie to VSS/VCC without functional impact |
| VSS | Ground reference | Return path for all internal circuitry; must be low-impedance for stable EEPROM operation |
| SDA | Serial data I/O | Open-drain bidirectional bus line requiring external pull-up (2 kΩ typical for 400 kHz) |
| SCL | Serial clock input | Master-generated synchronous timing signal; Schmitt-triggered for noise rejection |
| WP | Write-protect control | Pull high to disable writes to addresses 40h–7Fh; pull low for full-array read/write access |
| VCC | Power supply | Accepts 2.5V–5.5V; internal voltage detector disables writes below ~1.5V to prevent corruption |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | ≥50 mV hysteresis (0.05 × VCC) eliminates false triggering from bus noise |
| Hardware write-protect | Configurable half-array lock (40h–7Fh) via single WP pin - no firmware overhead required |
| I²C bus compatibility | Fully compliant with Philips I²C specification, including Start/Stop detection and ACK polling |
| ESD robustness | ≥4,000 V HBM - withstands handling and board-level ESD events without latch-up |
| Pb-free & RoHS compliance | Meets EU Directive 2011/65/EU; matte tin (Sn) lead finish per JEDEC J-STD-609 |
Applications
| Industrial Sensor Calibration | Consumer Remote Control ID Storage |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during power-on initialization via I²C. Use Value: Enables plug-and-play sensor replacement without manual recalibration; leverages 200-year data retention for maintenance-free operation. |
Use Scenario: Persisting unique IR code sets and user-programmed button mappings in universal remote controls. IC Role / Device Role / Timing Role: Low-power serial memory holding volatile user preferences across battery removal. Use Value: Achieves <1 μA standby draw to extend coin-cell life beyond 5 years; WP pin prevents accidental overwrite during firmware updates. |
| Medical Device Serial Numbering | Automotive Body Control Module Settings |
Use Scenario: Recording device-specific identifiers (UDI), manufacturing date, and revision codes in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant identity store accessed only by authenticated host MCU during boot. Use Value: Supports FDA UDI compliance with guaranteed 1M write cycles; half-array WP protects critical ID fields from field software errors. |
Use Scenario: Saving seat/mirror position presets and lighting profiles in automotive interior modules. IC Role / Device Role / Timing Role: Automotive-grade (−40°C to +125°C) nonvolatile memory interfaced directly to 3.3V microcontroller I²C bus. Use Value: Qualified for E-temp operation; 400 kHz speed enables fast recall of 8+ user profiles within 100 ms of power application. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA01H-I/SN | Lower VCC min (1.7V vs. 2.5V); identical pinout, memory map, and I²C timing | Better suited for ultra-low-voltage battery-powered devices (e.g., coin-cell IoT sensors) | Select if system VCC can dip below 2.5V; otherwise, 24LC01BH-I/SN offers tighter VCC tolerance in 3.3V/5V rails |
| AT24C01C-SSHM-T | Same 1 Kbit capacity, SOIC-8 package, and I²C interface; max clock 1 MHz; WP pin functional | Higher-speed option (1 MHz) with extended −40°C to +125°C automotive grade available | Choose when faster write throughput or AEC-Q200 qualification is required; verify WP behavior matches Microchip's half-array lock |
Compared with 24AA01H-I/SN and AT24C01C-SSHM-T, the 24LC01BH-I/SN provides optimal balance of industrial-temperature reliability, proven 400 kHz interoperability, and hardware-based half-array write protection - making it ideal for cost-sensitive, fixed-function embedded systems where voltage stability is assured above 2.5V.
Availability
24LC01BH-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer remote control ID storage, medical device serial numbering, and automotive body control module settings requiring stable component supply across multi-year production cycles.
Supply support for 24LC01BH-I/SN 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 24LC01BH belongs to Microchip's legacy 24XX01H family of I²C serial EEPROMs, engineered specifically for reliable, low-power nonvolatile storage in space-constrained embedded systems across industrial, medical, and consumer applications.
FAQ
What is the minimum VCC required for reliable operation of the 24LC01BH-I/SN?
The 24LC01BH-I/SN requires a minimum VCC of 2.5V for full functionality, including 400 kHz I²C operation and guaranteed write endurance. Operation below 2.5V is not specified and may result in incomplete writes or data corruption; the internal voltage detector disables write logic below ~1.5V to prevent partial programming. Always maintain VCC ≥2.5V during active communication or memory writes for the 24LC01BH-I/SN.
Does the 24LC01BH-I/SN support page writes, and what is the maximum page size?
Yes, the 24LC01BH-I/SN supports page writes of up to 8 bytes per cycle. The internal page buffer holds these bytes until a Stop condition is issued, after which they are written simultaneously to contiguous addresses within the same physical page boundary (00h–07h, 08h–0Fh, etc.). Attempting to cross a page boundary during a single page write causes wraparound - so software must align writes to 8-byte boundaries to avoid unintended overwrites in the 24LC01BH-I/SN.
How does the WP pin function on the 24LC01BH-I/SN, and what memory regions does it protect?
When the WP pin on the 24LC01BH-I/SN is tied to VCC, write operations to memory addresses 40h through 7Fh (the upper half of the 128-byte array) are inhibited; reads remain fully functional. When WP is tied to VSS (or left floating, though not recommended), full-array read/write access is enabled. This hardware-level protection requires no firmware intervention and is effective across all VCC levels within specification - a key safety feature for critical configuration data in the 24LC01BH-I/SN.
Is the 24LC01BH-I/SN pin-compatible with other Microchip 1 Kbit I²C EEPROMs like the 24AA01H-I/SN?
Yes, the 24LC01BH-I/SN is pin-compatible with the 24AA01H-I/SN in the same SOIC-8 (SN) package: both share identical pin assignments (A0–A2 = NC, VSS, SDA, SCL, WP, VCC), identical footprint, and identical I²C addressing (1010xxxR/W). However, their VCC ranges differ (24LC01BH: 2.5–5.5V; 24AA01H: 1.7–5.5V), so direct substitution is safe only if system VCC remains ≥2.5V - confirming compatibility for your specific 24LC01BH-I/SN deployment.
What is the endurance rating and data retention specification for the 24LC01BH-I/SN?
The 24LC01BH-I/SN is rated for more than 1 million erase/write cycles at 25°C and VCC = 5.5V, with data retention exceeding 200 years under the same conditions. These values are characterized (not 100% tested per unit) but ensured per Microchip's Total Endurance™ model. Real-world endurance scales inversely with temperature and VCC - so actual field lifetime remains robust even under industrial thermal cycling, provided proper derating is applied per DS22104A for the 24LC01BH-I/SN.
24LC01BH-I/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC01BH-I/SN FAQ
1.How can I place an order for 24LC01BH-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC01BH-I/SN 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 24LC01BH-I/SN reliable?
The price and inventory of 24LC01BH-I/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC01BH-I/SN is usually 5 days.
3.What payment methods are accepted for 24LC01BH-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC01BH-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC01BH-I/SN?
24LC01BH-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC01BH-I/SN 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 24LC01BH-I/SN?
For technical support, including 24LC01BH-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC01BH-I/SN requirements.
6.How does Aetrix verify that 24LC01BH-I/SN is sourced from the original manufacturer or authorized distributors?
All 24LC01BH-I/SN 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 24LC01BH-I/SN meets industry standards.
7.What is the process for return or replacement of 24LC01BH-I/SN?
All 24LC01BH-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC01BH-I/SN, 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 24LC01BH-I/SN part is unused and in its original packaging.
Return procedure for 24LC01BH-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC01BH-I/SN Tags
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