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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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.
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| 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 |
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