24LC64-E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The 24LC64-E/SN is a 64 Kbit (8 KB) I2C serial EEPROM from Microchip featuring a 400 kHz fast-mode 2-wire interface, 1,000,000 write/erase cycle endurance, and 200-year minimum data retention in an SOIC-8 package. It supports up to 8 devices on the same bus via hardware address pins. Available from stock worldwide.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24LC64-E/SN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 64 Kbit (8 KB) storage capacity with 400 kHz fast-mode I2C interface for rapid read and write access from any microcontroller
- 1,000,000 write/erase cycle endurance supporting frequent data logging, configuration updates, and calibration storage across the product lifetime
- 200-year minimum data retention ensuring non-volatile parameter and calibration data outlast the end-product service life
- Hardware address pins allow up to 8 devices on a single 2-wire bus, simplifying multi-node storage expansion without additional address decoders
Applications
The 24LC64-E/SN is widely used in embedded systems that require compact non-volatile storage for configuration data, calibration coefficients, and firmware parameters, such as industrial PLCs, smart meters, medical devices, and IoT gateways where the host microcontroller accesses 8 KB of EEPROM over the I2C bus at up to 400 kHz. Its SOIC-8 package and standard pinout make it a drop-in storage solution for consumer electronics, home automation controllers, and automotive body control modules requiring reliable, byte-addressable data retention across power cycles.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 13Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 0.4MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| I2C Control Byte | 1010DDDR |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 65536bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 8192words |
| Number of Words Code | 8000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 8KX8 |
| Output Characteristics | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 4.5V |
| Qualification Status | Not Qualified |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.000005A |
| Supply Current-Max | 0.003mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Write Cycle Time-Max (tWC) | 5ms |
| Write Protection | HARDWARE |
| Package | Small Outline Packages |
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 | Mainland China, Philippines, Taiwan, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 24LC64-E/SN:
Frequently Asked Questions
How many bytes of data can the 24LC64-E/SN store, and at what I2C clock speed can it be read?
The 24LC64-E/SN stores 64 Kbits, equivalent to 8,192 bytes (8 KB), and supports I2C clock frequencies up to 400 kHz in fast mode, allowing a full sequential read of all 8 KB to complete in approximately 0.2 seconds at maximum clock rate, suitable for fast startup configuration loading in embedded systems.
For an industrial data logger that writes configuration records daily, how long will the 24LC64-E/SN endure before reaching its write cycle limit?
With a rated endurance of 1,000,000 write/erase cycles per address location, a data logger writing the same EEPROM page once per day would reach the endurance limit after approximately 2,700 years of operation, far exceeding the 10-20 year product lifetime of typical industrial instruments.
How many 24LC64-E/SN devices can share the same I2C bus, and what mechanism controls addressing?
Up to 8 devices can share the same I2C bus simultaneously because the 24LC64-E/SN uses a 3-bit hardware address field set by the A0, A1, and A2 pins, providing 8 unique addresses (0b000 through 0b111) and allowing up to 64 KB of total EEPROM capacity on a single 2-wire bus with no additional address translation hardware.
When is 24LC64-E/SN a more appropriate EEPROM choice than a 256 Kbit or larger device for sensor calibration storage?
For sensors storing fewer than 200 calibration coefficients at 4 bytes each — totaling under 800 bytes — the 24LC64-E/SN provides 8 KB of headroom at a lower unit cost than 256 Kbit devices, while its standard SOIC-8 footprint and 400 kHz I2C interface remain pin-compatible with larger-density Microchip 24-series EEPROMs if a future design revision needs more storage.
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