24LC32A-I/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
24LC32A-I/ST is a 32 Kbit I2C serial EEPROM organized as 4096 x 8 bits with a 2.5 V to 5.5 V operating range. It delivers up to 400 kHz clock speed, 1,000,000 write/erase cycle endurance, and 200-year data retention in an 8-pin TSSOP package. Available from stock worldwide with competitive pricing.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24LC32A-I/ST 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
- 32 Kbit capacity organized as 4096 x 8 for configuration and calibration data storage
- 1,000,000 write/erase cycle endurance with 200-year minimum data retention for long product lifetimes
- Standard I2C interface at up to 400 kHz with selectable address pins supporting up to 8 devices on one bus
Applications
The 24LC32A-I/ST is widely used in consumer electronics, industrial controllers, and medical devices to store non-volatile configuration parameters, calibration coefficients, and firmware version information. Its compact 8-pin TSSOP footprint and 2.5 V minimum supply make it an ideal companion chip for microcontrollers in low-voltage embedded designs requiring reliable data retention across power cycles.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-8 |
| Factory Lead Time | 24Weeks |
| 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 Words | 4096words |
| Number of Words Code | 4000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 4KX8 |
| Output Characteristics | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN 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 | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| 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, Malaysia, Philippines, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many write cycles can the 24LC32A-I/ST handle before wear affects data integrity?
The 24LC32A-I/ST is guaranteed for a minimum of 1,000,000 write/erase cycles per byte location. Beyond this endurance limit, cell retention may degrade. For applications that update data very frequently, spreading writes across multiple address locations using wear-leveling techniques can significantly extend the useful service life of the device.
Can multiple 24LC32A-I/ST devices share the same I2C bus in a system?
Yes, up to 8 devices can coexist on a single I2C bus by using the 3 hardware address pins (A0, A1, A2) to assign unique 7-bit addresses in the range 0x50 to 0x57. This allows a total of 256 Kbit of EEPROM storage to be addressed from a single 2-wire I2C interface running at up to 400 kHz.
What is the minimum supply voltage for the 24LC32A-I/ST and how long can stored data be retained without power?
The 24LC32A-I/ST operates from a minimum supply voltage of 2.5 V, making it compatible with 3.3 V and 5 V microcontroller systems. Stored data is non-volatile and is specified to be retained for a minimum of 200 years once programmed, even with the supply completely removed, so it is reliable for long-life industrial products.
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