24LC32A-I/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
The 24LC32A-I/P is a Microchip 32 Kbit serial EEPROM in an 8-pin DIP package communicating over the I2C bus at up to 400 kHz. It guarantees over 1 million erase/write cycles and more than 200 years of data retention for non-volatile storage in embedded systems.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24LC32A-I/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3110(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 I2C EEPROM with 400 kHz fast-mode bus support enables high-speed serial reads and page writes in embedded MCU designs
- Over 1,000,000 guaranteed erase/write cycles per byte address ensures long operational lifespan in frequently updated parameter storage
- Data retention exceeding 200 years makes it suitable for mission-critical configuration and calibration data across product lifetimes
- 8-pin DIP package allows breadboard prototyping and hand soldering in development, with low-volume through-hole production flexibility
Applications
The 24LC32A-I/P is used in embedded systems that need compact non-volatile storage for configuration parameters, calibration tables, and device identifiers accessible via a 2-wire I2C interface. Typical deployments include industrial sensor nodes, smart meters, medical diagnostic equipment, and consumer electronics where a microcontroller must retain up to 4 KB of data across power cycles. Its address-pin configurability allows up to 8 devices to share the same I2C bus, enabling modular system expansion without changing firmware bus addressing.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-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-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 |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Power Supplies | 2/5 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 | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Write Cycle Time-Max (tWC) | 5ms |
| Write Protection | HARDWARE |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 24LC32A-I/P:
Frequently Asked Questions
How much data can 24LC32A-I/P store, and how is it organized in pages for write operations?
The 24LC32A-I/P stores 32 Kbits, equivalent to 4 KB of non-volatile data, organized in 32-byte pages. A page write operation transfers up to 32 bytes in a single I2C transaction, completing in approximately 5 ms. Applications writing sequential data such as data-logging buffers should align writes to 32-byte boundaries to maximize throughput and minimize write cycles consumed.
At what I2C clock frequency does 24LC32A-I/P operate, and can it work with 1 MHz fast-mode plus controllers?
The 24LC32A-I/P is rated for 400 kHz fast-mode I2C operation on a 2.5 V to 5.5 V supply. It is not compatible with 1 MHz fast-mode plus (FM+) controllers without speed reduction; MCU firmware should configure the I2C clock at or below 400 kHz when communicating with this device to avoid stretched clock violations and data corruption.
How many 24LC32A-I/P devices can share the same I2C bus, and how is addressing configured?
Up to 8 x 24LC32A-I/P chips can share a single I2C bus by setting the three address pins (A0, A1, A2) to unique binary combinations via pull-up or pull-down resistors. This provides a total addressable EEPROM capacity of 32 KB per device, or 256 KB in an 8-device array, without any additional bus arbitration logic or multiplexers.
With a 24-week factory lead time, how should engineering teams plan procurement of 24LC32A-I/P for production builds?
A 24-week lead time means purchase orders must be placed approximately 6 months before the required delivery date for production quantities of 24LC32A-I/P. Teams should place a blanket order with a 3-month delivery buffer to cover ramp variability. For bridge inventory, stocking distributors often carry small quantities at 2-5x standard pricing; confirm availability on order day since PDIP-8 through-hole EEPROMs are frequently allocated during component shortages.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5600 | $0.56 |
| 4+ | $0.4144 | $1.66 |
| 18+ | $0.3110 | $5.60 |
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