24AA256-I/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
The 24AA256-I/MS is a 256Kbit (32KB) I2C serial EEPROM from Microchip, operating at up to 400kHz with 1 million write/erase cycle endurance and 200-year data retention. It supports up to 8 devices on a single bus using configurable address pins and comes in an 8-pin MSOP package. In stock from authorized distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24AA256-I/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4260(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 24AA256-I/MS?
- 256Kbit (32KB) I2C EEPROM with 400kHz Fast Mode support for high-speed data logging and configuration storage
- 1 million write/erase cycle endurance with 200-year minimum data retention ensures long-term reliability in embedded systems
- Up to 8 devices addressable on a single I2C bus via hardware address pins, enabling easy memory expansion
- Wide operating voltage range and low standby current make it ideal for battery-powered and energy-harvesting applications
- Compact 8-pin MSOP package enables dense PCB layouts for space-constrained wearable and IoT designs
What is 24AA256-I/MS used for?
The 24AA256-I/MS is commonly used for storing configuration parameters, calibration data, and firmware settings in microcontroller-based systems such as industrial sensors, medical devices, and smart meters. Its I2C interface with multi-device addressing simplifies integration into existing two-wire bus systems without consuming additional GPIO resources. Consumer electronics including wearables, home automation controllers, and handheld instruments benefit from its high endurance and compact MSOP footprint.
What are the specifications of 24AA256-I/MS?
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 11Weeks |
| 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 | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 262144bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 32768words |
| Number of Words Code | 32000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 32KX8 |
| Output Characteristics | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 2.5V |
| Qualification Status | Not Qualified |
| Reverse Pinout | NO |
| Screening Level | AEC-Q100 |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.000005A |
| Supply Current-Max | 0.003mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.7V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| 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 24AA256-I/MS datasheet?
24AA256-I/MS Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 24AA256-I/MS?
Compatible alternatives and drop-in replacements for 24AA256-I/MS:
suggested
suggested
suggested
Frequently Asked Questions
What is the storage capacity of the 24AA256-I/MS?
It provides 256Kbits (32,768 bytes) of non-volatile EEPROM storage organized as 32K x 8-bit words, suitable for configuration tables, event logs, and calibration coefficients in embedded applications.
What I2C clock speed does the 24AA256-I/MS support?
The 24AA256-I/MS supports standard mode (100kHz) and fast mode (400kHz) I2C communication, making it compatible with virtually all modern microcontrollers and single-board computers.
How many 24AA256-I/MS devices can be connected to a single I2C bus?
Up to 8 devices can share a single I2C bus by setting the three hardware address pins (A0, A1, A2) to unique binary combinations, providing up to 256KB of total addressable EEPROM capacity.
What is the write endurance and data retention of the 24AA256-I/MS?
The device is rated for a minimum of 1 million write/erase cycles per byte location and guarantees data retention of at least 200 years under normal storage conditions, ensuring reliable long-term non-volatile storage.
What package and operating temperature range does the 24AA256-I/MS support?
It is available in an 8-pin MSOP surface-mount package and operates over the industrial temperature range of -40 to +85 degrees C, suitable for both commercial and industrial environment deployments.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 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.
More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.0700 | $1.07 |
| 2+ | $0.9138 | $1.83 |
| 8+ | $0.9016 | $7.21 |
| 16+ | $0.8884 | $14.21 |
| 25+ | $0.4260 | $10.65 |
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.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit