24LC32AT-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 24LC32AT-I/SN is a 32 Kbit (4K x 8) serial EEPROM with I2C interface in SOIC-8 package, supporting 400 kHz fast-mode clock. Delivers over 1,000,000 erase/write cycles and more than 200-year data retention for reliable non-volatile storage.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24LC32AT-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2350(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 (4096 x 8-bit) non-volatile EEPROM storage
- I2C (2-wire) serial interface up to 400 kHz fast mode
- Guaranteed 1,000,000 erase/write cycle endurance
- >200-year data retention at standard operating conditions
- 3 hardware address pins allow up to 8 devices on one bus
- Operating voltage range 2.5 V to 5.5 V
- SOIC-8 package with RoHS-compliant Pb-free construction
Applications
The 24LC32AT-I/SN is widely used for storing configuration parameters, calibration coefficients, and system logs in microcontroller-based designs such as industrial sensors, medical instruments, and smart metering devices. Its I2C interface with a 7-bit address scheme supports daisy-chaining up to 8 devices on a single 2-wire bus, simplifying multi-chip memory expansion. The 32 Kbit capacity and guaranteed long-term data retention make it suitable for safety-critical applications that require reliable non-volatile storage over product lifetimes exceeding 10 years.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 24Weeks |
| Additional Feature | 2-WIRE SERIAL INTERFACE; DATA RETENTION > 200 YEARS; 1000000 ERASE/WRITE CYCLES GUARANTEED |
| 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 |
| 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 |
| Power Supplies | 3/5 V |
| Qualification Status | Not Qualified |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.000001A |
| Subcategory | EEPROMs |
| 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 |
| Time@Peak Reflow Temperature-Max (s) | 60 |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 24LC32AT-I/SN:
Frequently Asked Questions
How many 24LC32AT-I/SN devices can share the same I2C bus simultaneously?
Up to 8 devices can share one I2C bus because the 24LC32AT-I/SN provides 3 hardware address pins (A0, A1, A2), yielding 8 unique 7-bit addresses. Each device occupies 32 Kbit (4 KB), so a fully populated bus provides up to 256 Kbit (32 KB) of addressable EEPROM storage without additional logic.
What write endurance and data retention specs should designers expect from the 24LC32AT-I/SN?
Microchip guarantees a minimum of 1,000,000 erase/write cycles per byte location and more than 200 years of data retention for the 24LC32AT-I/SN. These figures make it suitable for applications with frequent configuration updates or data logging, such as industrial controllers and metering devices running over decade-long product lifetimes.
What supply voltage range does the 24LC32AT-I/SN support, and can it interface directly with 3.3 V microcontrollers?
The 24LC32AT-I/SN operates from 2.5 V to 5.5 V, so it connects directly to both 3.3 V and 5 V microcontroller systems without level-shifting. At 3.3 V supply, the maximum I2C clock remains 400 kHz, and the device delivers full 32 Kbit storage capacity with no derating in write endurance or data retention.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.1550 | $1.16 |
| 21+ | $0.7425 | $15.59 |
| 25+ | $0.4620 | $11.55 |
| 100+ | $0.4200 | $42.00 |
| 1000+ | $0.4100 | $410.00 |
| 3300+ | $0.2350 | $775.50 |
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