24LC32A/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 24LC32A/SN is a 32 Kbit I2C serial EEPROM in SOIC-8 package with 1,000,000 write/erase cycle endurance, over 200-year data retention, and 100 kHz 2-wire interface. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24LC32A/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3785(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 32 Kbit capacity with I2C 2-wire serial interface at up to 100 kHz for easy microcontroller integration
- 1,000,000 guaranteed write/erase cycles and over 200-year data retention ensuring long-term non-volatile storage reliability
- SOIC-8 RoHS-compliant package with hardware address pins supporting up to 8 devices on a single I2C bus
Applications
The 24LC32A/SN is widely used for storing configuration data, calibration coefficients, and non-volatile parameters in microcontroller-based systems including industrial sensors, consumer electronics, and medical devices. Its 2-wire I2C interface at 100 kHz minimizes GPIO usage and simplifies firmware integration, while the guaranteed 1,000,000 write/erase endurance supports applications with frequent parameter updates such as event counters, usage logs, and adaptive tuning registers. The 8-pin SOIC package allows compact PCB placement alongside microcontrollers and mixed-signal ICs in space-constrained embedded designs.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 18Weeks |
| YTEOL | 8 |
| Additional Feature | 2-WIRE SERIAL INTERFACE; DATA RETENTION > 200 YEARS; 1000000 ERASE/WRITE CYCLES GUARANTEED |
| Clock Frequency-Max (fCLK) | 0.1MHz |
| 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 Words | 4096words |
| Number of Words Code | 4000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 4KX8 |
| 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 |
| Qualification Status | Not Qualified |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.000001A |
| Supply Current-Max | 0.003mA |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the storage capacity and write endurance of the 24LC32A/SN EEPROM?
The 24LC32A/SN provides 32 Kbits (4 Kbytes) of non-volatile EEPROM storage with a guaranteed endurance of 1,000,000 write/erase cycles per byte location. This endurance level is sufficient for embedded systems updating configuration or calibration data multiple times per day over a product lifetime exceeding 10 years without risk of wear-out failure.
How does the I2C address configuration work on the 24LC32A/SN and how many devices can share one bus?
The 24LC32A/SN uses the I2C control byte format 1010DDDR, where the two D address bits are set via external hardware address pins, allowing up to 4 unique device addresses on a single 2-wire bus. When using chips from different families that support 3 address bits, up to 8 EEPROM devices at 32 Kbits each can share one I2C bus, providing up to 256 Kbits of total addressable serial EEPROM storage.
What data retention does the 24LC32A/SN guarantee and how does it compare to flash memory for configuration storage?
The 24LC32A/SN guarantees data retention greater than 200 years at room temperature, making it far superior to NOR flash devices which typically specify 10 to 20 years data retention. For configuration and calibration parameters that are written infrequently but must be preserved reliably through power loss, battery replacement, and long storage periods, the 24LC32A/SN's 200-year retention provides a strong safety margin beyond product end-of-life.
What is the maximum clock frequency of the 24LC32A/SN I2C interface and what supply voltage is required?
The 24LC32A/SN supports a maximum I2C clock frequency of 100 kHz (standard mode), compatible with virtually all microcontrollers and processors that implement the I2C protocol. The device operates from a supply voltage range of 2.5 V to 5.5 V, covering both 3.3 V and 5 V logic systems without level-shifting in most applications.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4282 | $0.43 |
| 100+ | $0.4271 | $42.71 |
| 400+ | $0.3917 | $156.68 |
| 800+ | $0.3851 | $308.05 |
| 1600+ | $0.3785 | $605.57 |
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