24AA32A/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 24AA32A/SN is a 32 Kbit (4K x 8) I2C serial EEPROM in an 8-pin SOIC package with 100 kHz clock, 1,000,000 write/erase cycle endurance, and greater than 200 years data retention. Operates from 1.7 V to 5.5 V. In stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24AA32A/SN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 24AA32A/SN?
- 32 Kbit (4K x 8) I2C 2-wire serial EEPROM with 100 kHz clock and 1,000,000 erase/write cycle endurance for reliable non-volatile storage
- Greater than 200 years data retention at 25°C and 1.7 V to 5.5 V wide supply range enabling operation from single-cell lithium or 5 V logic systems
- 8-pin SOIC package with hardware address select pins supporting up to 8 devices on a single I2C bus for scalable memory configurations
What is 24AA32A/SN used for?
The 24AA32A/SN is used to store calibration coefficients, configuration parameters, and event logs in embedded systems such as industrial sensor modules, medical monitoring devices, and consumer electronics. Its 2-wire I2C interface with hardware address select pins allows up to 8 devices on a single bus, enabling modular memory expansion in data loggers, smart metering equipment, and microcontroller-based control systems operating from 1.7 V to 5.5 V supply rails.
What are the specifications of 24AA32A/SN?
| Pbfree Code | Yes |
| YTEOL | 5 |
| 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) | 1.8V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| 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 | Thailand |
Where can I find the 24AA32A/SN datasheet?
24AA32A/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 24AA32A/SN?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many write cycles and what data retention does the 24AA32A/SN guarantee for configuration storage applications?
The 24AA32A/SN guarantees 1,000,000 write/erase cycles per byte location and greater than 200 years of data retention at 25°C. For a configuration storage application that updates parameters once per hour, one million write cycles translates to over 114 years of continuous field operation before any single byte location reaches its endurance limit, making the device effectively lifetime-rated for most industrial and commercial embedded deployments.
Can the 24AA32A/SN operate alongside other I2C devices on a 3.3 V bus, and how many chips can share the same bus?
Yes, the 24AA32A/SN operates from 1.7 V to 5.5 V, making it directly compatible with 3.3 V logic systems. The I2C control byte is 1010DDDR, where the three D address bits are set by external pins, allowing up to 8 individual 24AA32A/SN devices to coexist on a single 2-wire bus. This provides up to 256 Kbits of addressable non-volatile storage accessible from a single microcontroller I2C port without additional bus arbitration hardware.
For a battery-powered data logger, what supply current does the 24AA32A/SN consume, and at what voltage does it remain operational?
The 24AA32A/SN operates down to 1.7 V minimum supply voltage, enabling use with single-cell lithium-ion or two-cell NiMH batteries discharged to near end-of-life. Active read current is typically below 1 mA at 100 kHz clock, and standby current falls below 1 µA, contributing negligible quiescent drain in a duty-cycled data logger that wakes periodically to write a 32-byte page over I2C and then returns to deep sleep mode.
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