24LC32A/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
32Kbit I2C serial EEPROM in an 8-pin PDIP package with 2-wire interface, 100 kHz clock, and over 200 years data retention. Guaranteed for 1,000,000 erase/write cycles with hardware address pins supporting up to 8 devices on a single I2C bus. Available from stock worldwide with fast delivery.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24LC32A/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2800(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1,000,000 guaranteed erase/write cycles with over 200 years data retention for long-life embedded storage applications
- 2-wire I2C interface at up to 100 kHz simplifies connection to any MCU with minimal pins and no external pull-down components
- Hardware address select pins allow up to 8 x 24LC32A devices on one I2C bus, scaling storage to 256Kbit without bus changes
Applications
The 24LC32A/P is a 32Kbit I2C EEPROM designed for non-volatile data storage in embedded systems including configuration registers, calibration coefficients, event logs, and user settings. Its 2-wire serial interface and 8-pin PDIP package make it straightforward to add persistent storage to microcontroller designs with minimal PCB real estate and no additional bus controller hardware. Applications include smart meters, medical monitoring devices, industrial sensors, and consumer electronics requiring reliable data retention over decades of operation.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-8 |
| Factory Lead Time | 24Weeks |
| 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-PDIP-T8 |
| 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 | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Parallel/Serial | SERIAL |
| 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 | NO |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Write Cycle Time-Max (tWC) | 5ms |
| Write Protection | HARDWARE |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.32.00.51 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 24LC32A/P:
suggested
suggested
suggested
Frequently Asked Questions
How many write cycles can the 24LC32A/P handle before data integrity is at risk, and what is its data retention once written?
The 24LC32A/P guarantees a minimum of 1,000,000 erase/write cycles per memory cell, supporting frequent configuration updates or event logging over a product lifespan. Data written to the EEPROM is retained for more than 200 years according to Microchip's specification, making it suitable for archival storage of calibration data and serial numbers in industrial equipment.
How many 24LC32A/P devices can share a single I2C bus, and how are they individually addressed?
Up to 8 individual 24LC32A/P devices can coexist on a single 2-wire I2C bus by connecting the three hardware address pins A0, A1, and A2 to VCC or GND in different combinations. This allows a total of 8 x 32Kbit = 256Kbit (32KB) of addressable EEPROM storage on a single bus, useful for multi-channel data logging systems where each channel writes to its own device.
At 100 kHz I2C clock, how long does it take to write a full page to the 24LC32A/P and what write cycle time must the host observe?
The 24LC32A/P supports page writes of up to 32 bytes. At 100 kHz I2C clock, transmitting the 2-byte address plus 32 data bytes takes approximately 2.72 ms. After issuing a write command, the host must wait up to 5 ms for the internal write cycle to complete before issuing the next command, yielding an effective sequential write throughput of roughly 6 bytes per millisecond for full-page bursts.
When is the 24LC32A/P a suitable choice over an SPI EEPROM such as the 25LC256 for a microcontroller design?
The 24LC32A/P is preferred when the MCU has only 2 free GPIO pins available for the I2C SCL and SDA lines, as SPI requires 4 lines (MOSI, MISO, SCK, CS). For applications storing under 32Kbit of data that update less than weekly—such as factory calibration or device serial numbers—the 100 kHz I2C bus speed is sufficient and the 8-pin PDIP simplifies prototyping on breadboards without SMD soldering.
Related Guides
150141RS73100 Red LED Indicator and Current-Resistor Design Guide
Design a reliable 150141RS73100 red LED indicator with worst-case resistor sizing, GPIO checks, PWM drive, layout, and production validation.
Jul 11, 2026
742792651 Ferrite Bead EMI Filter and Power Integrity Design Guide
Practical guidance for using 742792651 in ferrite-bead EMI filters, including bias, DCR, damping, layout, and validation.
Jul 11, 2026
How to Choose a Ferrite Bead for EMI Suppression Rails: Selection Guide
Compare 742792651 and related ferrite beads by impedance, current rating, DCR, package, layout, and EMI test context.
Jul 10, 2026
150141BS73100 Design Guide for 3528 Status Indicator LED Circuits
Design 3528 status indicator LED circuits with 150141BS73100: current setting, resistor sizing, polarity, optics, and sourcing checks.
Jul 10, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5600 | $0.56 |
| 4+ | $0.4144 | $1.66 |
| 22+ | $0.2800 | $6.16 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”