24LC01BT-I/LT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
The 24LC01BT-I/LT is a 1Kbit I2C serial EEPROM from Microchip with byte and page write capability, operating from 1.7V to 5.5V supply. It features 1 million erase/write cycles endurance and 200-year data retention, housed in a compact 5-pin SC-70 package.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- 24LC01BT-I/LT Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1 Kbit (128 bytes) I2C EEPROM with 1.7V to 5.5V wide supply range covering both 1.8V and 3.3V/5V system rails
- 1 million erase/write cycle endurance with 200-year data retention ensures long-term reliability for calibration and configuration storage
- Ultra-compact 5-pin SC-70 package occupies under 2 mm x 2 mm board area, ideal for space-constrained wearable and IoT designs
Applications
The 24LC01BT-I/LT is used for storing calibration constants, device serial numbers, and small configuration tables in microcontroller-based systems where 128 bytes of non-volatile storage is sufficient. Its 1.7V to 5.5V operating range makes it compatible with both 1.8V low-power MCUs and traditional 5V microcontrollers using a single 2-wire I2C interface. The SC-70 package and low standby current below 1 µA suit it for wearable devices, smart sensors, and battery-operated IoT nodes.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SC70-5 |
| Factory Lead Time | 7Weeks |
| Date Of Intro | 1991-01-01 |
| YTEOL | 9 |
| Memory IC Type | EEPROM |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Terminal Finish | Matte Tin (Sn) |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.51 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 24LC01BT-I/LT:
Frequently Asked Questions
How much storage capacity does 24LC01BT-I/LT provide, and how is it organized?
The 24LC01BT-I/LT provides 1 Kbit (128 bytes) of EEPROM storage organized as 128 x 8-bit words, accessible over I2C at addresses configurable via hardware pins. Page write operations support up to 8 bytes per write cycle, completing in a maximum of 5 ms, making sequential block writes up to 16 times faster than byte-by-byte operation for initial firmware or calibration data loading.
What supply voltage range does 24LC01BT-I/LT support, and is it compatible with 1.8V low-power MCUs?
The 24LC01BT-I/LT operates from 1.7V to 5.5V, directly compatible with 1.8V low-power microcontrollers such as the MSP430 or STM32L0 series without level shifting. It also operates at 3.3V and 5V, allowing a single part number to span multiple design generations. Standby current is below 1 µA, contributing negligible power drain to battery-powered systems operating at 3.3V.
How long will stored data persist in 24LC01BT-I/LT, and what endurance does it offer for frequent write applications?
The 24LC01BT-I/LT is rated for 200-year data retention and 1 million erase/write cycles per byte location. For an application writing calibration data once per day, the 1 million cycle limit translates to over 2,700 years of operation. For more frequent writes such as event counters or odometer registers, wear-leveling across the 128-byte address space extends operational life proportionally.
Which SC-70 alternatives exist if 24LC01BT-I/LT is unavailable, and how do they compare in pin compatibility?
Pin-compatible alternatives in SC-70 5-pin packages include the AT24C01D from Microchip and the M24C01 from STMicroelectronics, both offering 1 Kbit EEPROM with I2C interface and 1.7V to 5.5V operation at the same 8-byte page size. The 24LC02BT-I/LT doubles capacity to 2 Kbits (256 bytes) in the same SC-70 package and is a direct footprint replacement when additional storage is needed without PCB changes.
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