24LC32AT-I/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
The 24LC32AT-I/OT is a 32Kbit (4K x 8) I2C serial EEPROM from Microchip, operating at 2.5V to 5.5V with up to 400kHz Fast Mode communication and 1 million write/erase cycle endurance. It is available in an ultra-compact 5-pin SOT-23 package rated for industrial -40 to 85 degrees C use. In stock from authorized distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- 24LC32AT-I/OT Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 32Kbit (4KB) I2C EEPROM in tiny 5-pin SOT-23 package enables non-volatile storage in the smallest embedded designs
- 1 million write/erase cycle endurance with 200-year data retention provides reliable long-term configuration and data storage
- 400kHz Fast Mode I2C interface (control byte 1010000R) for quick access with fixed I2C address reducing bus conflicts
- Wide 2.5V to 5.5V operating voltage range compatible with 3.3V and 5V microcontroller systems without level shifting
- Industrial temperature rating of -40 to 85 degrees C suits demanding environments in automation and instrumentation
Applications
The 24LC32AT-I/OT is used for storing non-volatile configuration data, device identity, and calibration coefficients in space-constrained embedded systems such as IoT sensor nodes, wearables, and RFID modules. Its tiny SOT-23 footprint and 2.5V compatibility make it an ideal companion for low-power microcontrollers in battery-operated consumer and industrial devices. Medical instrumentation, smart power meters, and handheld test equipment rely on its high endurance and industrial temperature rating for dependable field operation.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 23Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 0.4MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| I2C Control Byte | 1010000R |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Memory Density | 32768bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Words | 4096words |
| Number of Words Code | 4000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 4KX8 |
| Output Characteristics | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 5V |
| Qualification Status | Not Qualified |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.000001A |
| Supply Current-Max | 0.003mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Write Cycle Time-Max (tWC) | 5ms |
| Write Protection | HARDWARE |
| 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 | Malaysia, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the storage capacity of the 24LC32AT-I/OT?
It provides 32Kbits (4,096 bytes) of non-volatile EEPROM storage organized as 4K x 8-bit words, which is well suited for configuration parameters, calibration tables, and small data logs in embedded applications.
What operating voltage range does the 24LC32AT-I/OT support?
The 24LC32AT-I/OT operates from 2.5V to 5.5V, making it compatible with both 3.3V and 5V microcontroller I/O without additional level translation circuitry.
What I2C address does the 24LC32AT-I/OT use?
It uses a fixed I2C control byte of 1010000R, meaning only one device can be placed on a single I2C bus without address conflicts; for multi-device configurations requiring more than one EEPROM, the 24LC256 with configurable address pins is recommended.
What package is the 24LC32AT-I/OT available in?
It comes in a 5-pin SOT-23 surface-mount package, one of the smallest standard IC packages available, making it ideal for size-critical designs in wearables, hearing aids, and miniature sensor modules.
How durable is the 24LC32AT-I/OT for frequent write operations?
The device is rated for a minimum of 1 million write/erase cycles per memory location and guarantees at least 200 years of data retention after the last write, ensuring reliable storage even in applications with frequent data updates.
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