24LC32AF-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The 24LC32AF-I/SN is a 32 Kbit I2C serial EEPROM from Microchip with 400 kHz Fast mode clock, 1,000,000-cycle endurance, and 200-year minimum data retention. It uses an 8-pin SOIC package with I2C address byte 1010DDDR for multi-device bus sharing. Available in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24LC32AF-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2010(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 32 Kbit (4 KB) I2C EEPROM with 400 kHz Fast mode support enabling rapid non-volatile storage in microcontroller systems without SPI bus overhead
- 1,000,000 write/erase cycle endurance with 200-year minimum data retention ensuring long service life in configuration and calibration storage applications
- 8-pin SOIC-8 package with hardware address pins (1010DDDR) supporting up to 8 devices on a single I2C bus for scalable storage expansion
Applications
The 24LC32AF-I/SN is ideal for storing calibration coefficients, device configuration tables, and firmware parameters in microcontroller-based products such as medical devices, smart meters, and industrial sensors. Its 400 kHz I2C Fast mode allows read and write operations to complete in under 1 ms for typical 32-byte page writes, minimizing system initialization delays. The RoHS e3-compliant SOIC-8 package is compatible with standard pick-and-place assembly and supports operating temperatures from -40°C to +85°C.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| 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 | 32768bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 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 | SOP8,.23 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 5V |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| 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 | 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, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 24LC32AF-I/SN:
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Frequently Asked Questions
How many write cycles can 24LC32AF-I/SN sustain before endurance becomes a design concern?
The 24LC32AF-I/SN is rated for 1,000,000 write/erase cycles per byte location, and data retention is guaranteed for a minimum of 200 years at 25°C after the last write. For an application logging sensor data every 10 minutes, a single address location would reach 1,000,000 writes after approximately 19 years, so wear-leveling across 4 KB of storage extends the practical lifetime far beyond typical product lifespans of 10 to 15 years.
How does the I2C address scheme of 24LC32AF-I/SN enable multiple EEPROMs on the same bus?
The I2C control byte is structured as 1010DDDR, where the two D bits correspond to hardware address pins A1 and A0, allowing up to 4 distinct addresses (0–3) on a single 2-wire I2C bus. If a design needs more than 4 devices, the 400 kHz maximum clock still supports back-to-back page reads of 32 bytes in under 1 ms per device, so multiple EEPROMs can be addressed sequentially within a single I2C transaction burst without slowing system initialization.
What page write size does 24LC32AF-I/SN support and how does it affect firmware update storage design?
The 24LC32AF-I/SN supports 32-byte page writes, meaning each write operation can transfer up to 32 bytes in a single I2C sequence. For a 4 KB firmware parameter block requiring full update, this requires 128 sequential page writes, each completing within the 5 ms maximum write cycle time, for a total update time of approximately 640 ms. Designers should align parameter structures to 32-byte boundaries to avoid partial-page write penalties and unintended byte corruption at page boundaries.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2010 | $0.20 |
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