The Microchip 24LC64T-E/OT is a 64-Kbit I²C-compatible serial EEPROM organized as 8K × 8 bits. It uses a standard two-wire serial interface and is suitable for storing configuration parameters, calibration data, identification information, and other nonvolatile system data. Microchip currently lists the 24LC64 family as In Production.
The 24LC64 operates from 2.5V to 5.5V and supports an I²C clock frequency of up to 400kHz. Its low-power CMOS architecture specifies a maximum 3mA write current, 400µA read current, and up to 5µA standby current for the extended-temperature grade.
The device supports a 32-byte page-write buffer, with a maximum byte or page write-cycle time of 5ms. It also includes self-timed erase/write operation and a hardware write-protect input. Microchip specifies more than one million erase/write cycles and more than 200 years of data retention.
For the exact 24LC64T-E/OT orderable part, “T” denotes tape-and-reel packaging, “E” identifies the -40°C to +125°C extended temperature grade, and “OT” identifies the compact 5-lead SOT-23 package. The SOT-23 version does not expose the A0/A1/A2 address pins, helping minimize PCB footprint.
Key Features:
- Manufacturer: Microchip Technology
- Part Number: 24LC64T-E/OT
- Family: 24LC64
- Memory Type: Serial EEPROM
- Memory Size: 64Kbit
- Organization: 8K × 8-bit
- Interface: I²C / 2-Wire
- Maximum Clock Frequency: 400kHz
- Supply Voltage: 2.5V to 5.5V
- Page Write Size: 32 Bytes
- Maximum Write Cycle: 5ms
- Maximum Write Current: 3mA
- Maximum Read Current: 400µA
- Maximum Extended-Grade Standby Current: 5µA
- Endurance: >1,000,000 Erase/Write Cycles
- Data Retention: >200 Years
- Hardware Write Protect: Yes
- ESD Protection: >4kV
- Operating Temperature: -40°C to +125°C
- Package: SOT-23-5 / OT
- Mounting Type: Surface Mount
- Packaging: Tape & Reel
- RoHS Compliant
- Product Status: In Production.
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