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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology 24FC1025-I/SN

Name: 24FC1025-I/SN
Brand: Microchip Technology
SKU: 24FC1025-I/SN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 24FC1025-I/SN

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: 24FC1025-I/SN.pdf

Description:: IC EEPROM 1MBIT I2C 1MHZ 8SOIC

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Product details

Overview

24FC1025-I/SN from Microchip Technology Inc. is a 128K × 8 (1024 Kbit) I²C-compatible serial EEPROM with 1 MHz maximum clock frequency, 1.8–5.5 V supply range, and industrial temperature rating (–40°C to +85°C). It features 128-byte page write buffer, hardware write-protection via WP pin, and Schmitt-trigger inputs for noise immunity. Used in embedded systems for firmware parameter storage, calibration data retention, and configuration backup.

For engineers reviewing the 24FC1025-I/SN datasheet, 24FC1025-I/SN pinout, 24FC1025-I/SN application, or 24FC1025-I/SN equivalent, key selection criteria include its 1 MHz I²C speed at V_CC ≥ 2.5 V, 5 µA standby current, 3 ms typical page write time, and SOIC-8 package compatibility with legacy 24AA/24LC designs requiring higher throughput.

Technical Context

The 24FC1025-I/SN implements a two-wire I²C interface with master-controlled SCL/SDA timing, supporting standard (100 kHz), fast (400 kHz), and fast-plus (1 MHz) modes depending on V_CC. Its internal address counter enables sequential reads across 512 Kbit segments (00000h–0FFFFh and 10000h–1FFFFh), while block select bit B0 controls access between them.

It uses cascaded addressing with A0/A1 pins to support up to four devices on one bus, and requires A2 to be hard-wired to V_CC. Write protection is implemented via dedicated WP pin sampled at Stop condition, and all I/O pins feature Schmitt-trigger inputs and slope control to suppress ground bounce and EMI.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory size	128K × 8 bits (1024 Kbit); supports nonvolatile storage of boot parameters, device IDs, or sensor calibration tables.
I²C clock max	1 MHz at V_CC ≥ 2.5 V; enables faster firmware updates vs. 400 kHz variants, reducing system boot/configuration latency.
Voltage range	1.8 V to 5.5 V; interoperable with 1.8 V logic domains and legacy 3.3/5 V microcontrollers without level shifters.
Page write buffer	128 bytes; allows single-command bulk writes within page boundaries, minimizing I²C transaction overhead.
Write endurance	1 million erase/write cycles per page; sufficient for daily logging or field-upgrade applications over 10+ years.
Data retention	200 years at +85°C; ensures long-term reliability for unpowered storage in industrial or automotive environments.
Standby current	5 µA max; critical for battery-backed systems where EEPROM must remain powered during sleep modes.

Pinout & Package

24FC1025-I/SN is supplied in an 8-pin SOIC (Small Outline Integrated Circuit) package, 3.90 mm body width, RoHS-compliant matte tin finish, with standard 1.27 mm pitch and JEDEC MS-012AC footprint.

Pin/Terminal	Circuit Role	Design Meaning
A0	User-configurable chip address input	Defines LSB of slave address; tied high/low to select one of four possible I²C addresses (1010xx0).
A1	User-configurable chip address input	Defines MSB of slave address; used with A0 to enable up to four devices on same I²C bus.
A2	Non-configurable chip select	Must be hard-wired to V_CC; floating or grounded causes undefined operation - not optional.
VSS	Ground reference	System common return; requires low-impedance connection to minimize noise coupling into SDA/SCL lines.
SDA	Bidirectional I²C data line	Open-drain output; requires external pull-up resistor (2 kΩ typical for 1 MHz operation) to V_CC.
SCL	I²C clock input	Master-generated clock; Schmitt-trigger input ensures robust timing margin against signal ringing or slow edges.
WP	Hardware write-protect control	Pulled to V_CC to disable all writes; sampled only at Stop condition - toggling mid-cycle has no effect.
VCC	Power supply	Accepts 1.8–5.5 V; internal voltage regulator enables stable EEPROM operation across wide input range.

Key Features

Feature	Design Value
Fast-plus I²C interface	1 MHz clock support at V_CC ≥ 2.5 V reduces firmware update time by ~2.5× vs. 400 kHz EEPROMs.
128-byte page write buffer	Enables efficient bulk writes without host-side buffering; eliminates need for repeated byte-write commands.
Hardware write-protection	WP pin provides fail-safe, pin-level lockout of memory writes - independent of software state or power sequencing.
Schmitt-trigger inputs	Input hysteresis >5% V_CC rejects noise spikes up to 50 ns, eliminating external filtering in electrically noisy industrial PCBs.
Low-power operation	450 µA read current and 5 µA standby current extend battery life in portable or energy-harvesting applications.

Applications

Industrial Sensor Node	Medical Device Calibration
Use Scenario: Storing factory-calibrated sensor offsets and temperature compensation coefficients in a wireless pressure transducer. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during power-on initialization via I²C. Use Value: Enables field-replaceable sensors without recalibration; 200-year data retention guarantees accuracy over product lifetime.	Use Scenario: Retaining patient-specific therapy parameters and usage logs in a portable infusion pump. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for regulatory-compliant audit trails and safety-critical settings. Use Value: Hardware WP pin prevents accidental overwrite during runtime; 1M endurance supports daily log entries for >27 years.
Automotive Body Control Module	Smart Energy Meter
Use Scenario: Saving user preferences (mirror position, seat memory) and fault codes in a 12 V vehicle subsystem. IC Role / Device Role / Timing Role: I²C slave storing persistent state across ignition cycles; operates across –40°C to +85°C ambient. Use Value: 1.8 V minimum V_CC tolerance accommodates brown-out conditions; SOIC-8 footprint matches legacy designs.	Use Scenario: Recording tariff schedules, billing cycles, and tamper events in a DIN-rail mounted electricity meter. IC Role / Device Role / Timing Role: High-reliability data logger interfaced to MCU via 1 MHz I²C for rapid interval data capture. Use Value: 128-byte page writes reduce I²C bus occupancy during 15-minute energy sampling bursts.

Industrial Sensor Node

Medical Device Calibration

Use Scenario: Storing factory-calibrated sensor offsets and temperature compensation coefficients in a wireless pressure transducer.

IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during power-on initialization via I²C.

Use Value: Enables field-replaceable sensors without recalibration; 200-year data retention guarantees accuracy over product lifetime.

Use Scenario: Retaining patient-specific therapy parameters and usage logs in a portable infusion pump.

IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for regulatory-compliant audit trails and safety-critical settings.

Use Value: Hardware WP pin prevents accidental overwrite during runtime; 1M endurance supports daily log entries for >27 years.

Automotive Body Control Module

Smart Energy Meter

Use Scenario: Saving user preferences (mirror position, seat memory) and fault codes in a 12 V vehicle subsystem.

IC Role / Device Role / Timing Role: I²C slave storing persistent state across ignition cycles; operates across –40°C to +85°C ambient.

Use Value: 1.8 V minimum V_CC tolerance accommodates brown-out conditions; SOIC-8 footprint matches legacy designs.

Use Scenario: Recording tariff schedules, billing cycles, and tamper events in a DIN-rail mounted electricity meter.

IC Role / Device Role / Timing Role: High-reliability data logger interfaced to MCU via 1 MHz I²C for rapid interval data capture.

Use Value: 128-byte page writes reduce I²C bus occupancy during 15-minute energy sampling bursts.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
24LC1025-I/SN	Max I²C clock = 400 kHz; V_CC min = 2.5 V; same pinout and memory map.	Limited to 3.3/5 V systems; unsuitable for 1.8 V logic or high-throughput logging.	Select when cost sensitivity outweighs speed requirement and 1.8 V operation is unnecessary.
AT24C1024-SSHL-T	1 MHz I²C; V_CC = 1.7–5.5 V; identical 128K × 8 density and SOIC-8 package.	Microchip's 24FC1025 offers tighter AC specs (e.g., 250 ns THD:STA at 1 MHz) and superior ESD (>4 kV).	Prefer 24FC1025-I/SN for noise-critical industrial environments or where Microchip qualification is mandated.

Compared with 24LC1025-I/SN and AT24C1024-SSHL-T, the 24FC1025-I/SN delivers higher I²C throughput at lower V_CC, stronger noise immunity via Schmitt triggers, and guaranteed Microchip manufacturing traceability - making it optimal for demanding embedded applications requiring speed, robustness, and supply-chain control.

Availability

24FC1025-I/SN is available at Aetrix Electronics and suitable for industrial sensor nodes, medical device calibration storage, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for 24FC1025-I/SN includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology Inc. is a leading provider of microcontroller, analog, and memory solutions, headquartered in Chandler, Arizona, with global design, manufacturing, and sales operations.

The 24FC1025 belongs to Microchip's 24XX1025 family of high-density serial EEPROMs, engineered for low-voltage, low-power embedded systems requiring reliable nonvolatile storage with enhanced noise immunity and fast I²C communication.

FAQ

What is the maximum I²C clock frequency supported by the 24FC1025-I/SN?

The 24FC1025-I/SN supports up to 1 MHz I²C clock frequency when V_CC is 2.5 V or higher. At 1.8–2.5 V, the maximum clock is 400 kHz. This dual-speed capability allows seamless integration into both legacy 3.3 V systems and modern 1.8 V low-power designs without sacrificing throughput.

Does the 24FC1025-I/SN require external pull-up resistors on SDA and SCL lines?

Yes, the 24FC1025-I/SN requires external pull-up resistors on both SDA and SCL lines because these pins are open-drain. For 1 MHz operation, a 2 kΩ pull-up to V_CC is recommended; for 400 kHz, 2.2 kΩ is typical. Incorrect pull-up values cause timing violations or bus lockup.

How does hardware write-protection work on the 24FC1025-I/SN?

The WP pin on the 24FC1025-I/SN must be tied to V_CC to disable all write operations (byte, page, or erase). It is sampled only at the Stop condition of each write command - toggling WP during an active cycle has no effect. Read operations remain fully functional regardless of WP state.

Can the 24FC1025-I/SN be used interchangeably with the 24AA1025 or 24LC1025?

The 24FC1025-I/SN shares identical pinout, memory map, and I²C protocol with 24AA1025 and 24LC1025, but differs in V_CC range and speed. It is a drop-in replacement in 2.5–5.5 V systems requiring 1 MHz I²C, but not in 1.7–2.5 V applications where 24AA1025 operates and 24FC1025 does not.

What is the page write time specification for the 24FC1025-I/SN?

The 24FC1025-I/SN has a typical page write time of 3 ms and a maximum write cycle time of 5 ms (per byte or page). This self-timed internal erase/write cycle eliminates the need for host polling delay - though ACK polling remains supported for precise timing control in deterministic systems.

24FC1025-I/SN Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: EEPROM

Technology:: EEPROM

Memory Size:: 1Mbit

Memory Organization:: 128K x 8

Memory Interface:: I2C

Clock Frequency:: 1 MHz

Write Cycle Time - Word, Page:: 5ms

Access Time:: 400 ns

Voltage - Supply:: 1.8V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

24FC1025-I/SN FAQ

1.How can I place an order for 24FC1025-I/SN through Aetrix?

Please submit a Request for Quotation (RFQ) for 24FC1025-I/SN on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 24FC1025-I/SN reliable?

The price and inventory of 24FC1025-I/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24FC1025-I/SN is usually 5 days.

3.What payment methods are accepted for 24FC1025-I/SN?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24FC1025-I/SN transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 24FC1025-I/SN?

24FC1025-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 24FC1025-I/SN order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 24FC1025-I/SN?

For technical support, including 24FC1025-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24FC1025-I/SN requirements.

6.How does Aetrix verify that 24FC1025-I/SN is sourced from the original manufacturer or authorized distributors?

All 24FC1025-I/SN products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 24FC1025-I/SN meets industry standards.

7.What is the process for return or replacement of 24FC1025-I/SN?

All 24FC1025-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24FC1025-I/SN, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 24FC1025-I/SN part is unused and in its original packaging.

Return procedure for 24FC1025-I/SN:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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