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Microchip Technology AT24C01-10SI-2.5
- Part No.:
- AT24C01-10SI-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C01-10SI-2.5.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,968
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Product details
Overview
AT24C01-10SI-2.5 from Microchip Technology (formerly Atmel) is a 1K-bit (128 × 8) serial EEPROM with 2-wire I²C-compatible interface, optimized for low-voltage industrial applications requiring VCC = 2.5V to 5.5V operation, 100 kHz clock frequency at 2.5V, and -40°C to +85°C temperature range. It supports 4-byte page writes, self-timed 10 ms max write cycles, and delivers 1 million write endurance with 100-year data retention.
For engineers reviewing the AT24C01-10SI-2.5 datasheet, AT24C01-10SI-2.5 pinout, AT24C01-10SI-2.5 application, or AT24C01-10SI-2.5 equivalent, key selection considerations include its industrial-grade temperature rating, 2.5V minimum supply compatibility, SOIC-8 package footprint, and I²C bus timing compliance at reduced voltage.
Technical Context
The AT24C01-10SI-2.5 implements a fixed 7-bit slave address with A0–A2 pins for device addressing on shared I²C buses, and uses open-drain SDA/SCL signaling with internal pull-up requirements. Its memory array is organized as 128 individually addressable bytes, accessed via 7-bit word addresses without internal address incrementing beyond page boundaries in byte mode.
Write operations support both byte and 4-byte page modes; after each write, the device enters a non-responsive self-timed write cycle (tWR ≤ 10 ms), during which acknowledge polling must be used to detect completion. Standby current is specified at 4.0 µA max (VCC = 2.5V, TA = -40°C to +85°C), enabling ultra-low-power retention in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), supporting single-byte or 4-byte page writes without external address latching |
| Supply Voltage Range | 2.5V to 5.5V - enables direct interfacing with 2.5V logic domains and mixed-voltage I²C buses |
| I²C Clock Frequency | 100 kHz max at 2.5V - defines maximum sustained transaction rate under low-voltage operation |
| Write Cycle Time | ≤10 ms - determines minimum interval between successive write commands; blocks all bus activity during execution |
| Endurance | 1 million write cycles - supports frequent configuration updates in programmable controllers and calibration storage |
| Data Retention | 100 years at +25°C - ensures long-term reliability for firmware metadata, serial numbers, and calibration coefficients |
| Operating Temperature | -40°C to +85°C - qualified for industrial control, automotive body electronics, and outdoor sensor nodes |
Pinout & Package
AT24C01-10SI-2.5 is supplied in an 8-pin JEDEC-standard SOIC package (package code 8S1), measuring 4.90 mm × 3.90 mm × 1.75 mm, with gull-wing leads and 1.27 mm pitch. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A0) | Address Input | LSB of 7-bit slave address; tied high/low to configure one of eight possible I²C addresses on shared bus |
| 2 (A1) | Address Input | Mid-bit of 7-bit slave address; enables up to eight AT24C01 devices on same I²C segment |
| 3 (A2) | Address Input | MSB of 7-bit slave address; required for multi-device topology without address conflict |
| 4 (GND) | Ground Reference | System return path for VCC, SDA, and SCL; must be low-impedance to minimize noise coupling into I²C lines |
| 5 (VCC) | Power Supply | Primary power rail (2.5V–5.5V); requires local 0.1 µF ceramic decoupling placed within 5 mm of pin |
| 6 (TEST) | Factory Test Input | Internally connected to GND or VCC during production test; left unconnected in application circuits |
| 7 (SCL) | Serial Clock Input | Master-generated clock signal; open-drain compatible; requires external pull-up resistor (typically 2.2–10 kΩ) |
| 8 (SDA) | Serial Data I/O | Bidirectional open-drain data line; shares pull-up with SCL in standard I²C topology; supports wire-OR with other devices |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation (2.5V–5.5V) | Enables direct integration with 2.5V microcontrollers and FPGAs without level-shifting circuitry |
| Industrial Temperature Range (-40°C to +85°C) | Validates stable read/write performance across thermal cycling in factory automation and motor drives |
| 4-Byte Page Write Mode | Reduces I²C bus occupancy by up to 75% vs. four sequential byte writes, improving system responsiveness |
| Self-Timed Write Cycle (≤10 ms) | Eliminates need for external write-complete polling delay; allows host to perform other tasks during write execution |
| 1 Million Write Endurance | Supports daily reconfiguration over 27 years - sufficient for field-upgradable firmware parameter storage |
Applications
| Industrial PLC Configuration Storage | Smart Sensor Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in manufacturing cells. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via I²C during boot and runtime updates; retains values across AC power loss. Use Value: Enables field reprogramming without hardware modification; 100-year retention prevents recalibration drift in unattended installations. |
Use Scenario: Holding factory-trimmed offset/gain coefficients and temperature compensation curves for MEMS pressure sensors in HVAC systems. IC Role / Device Role / Timing Role: Read-once-at-boot EEPROM providing correction data to ADC driver firmware; accessed only during sensor initialization. Use Value: Achieves ±0.1% full-scale accuracy without requiring precision external references; 1M endurance supports lifetime calibration verification. |
| Automotive Body Control Module | Medical Device Usage Logs |
Use Scenario: Recording seat position memory, mirror presets, and lighting profiles in 12V automotive body control units operating at 2.5V logic levels. IC Role / Device Role / Timing Role: I²C slave storing user preferences; powered from regulated 2.5V domain; withstands load-dump transients via internal ESD protection (>3000V). Use Value: Eliminates need for discrete voltage translators; -40°C to +85°C rating ensures reliability in under-hood and cabin environments. |
Use Scenario: Logging sterilization cycles, usage counts, and operator IDs in portable diagnostic equipment requiring FDA-compliant audit trails. IC Role / Device Role / Timing Role: Tamper-resistant event logger using write-protected pages; accessed only by authenticated firmware via secure I²C handshake. Use Value: Meets IEC 62304 data integrity requirements; 100-year retention satisfies medical device service life mandates without battery backup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip 24AA01-I/SN | Same 1K-bit capacity, 2.5V–5.5V operation, SOIC-8 package, but rated for -40°C to +125°C and features enhanced ESD (4000V HBM) | Preferred for extended-temperature automotive or aerospace use where >85°C ambient is expected | Select 24AA01-I/SN when operating above +85°C or requiring higher ESD immunity; pinout and firmware are identical |
| ON Semiconductor CAT24C01HU4I-GT3 | 1K-bit EEPROM with 1.7V–5.5V supply, 100 kHz @ 1.8V, SOIC-8, but specifies only 100k write cycles and 40-year retention | Suitable for cost-sensitive consumer products with shorter service life and lower reliability demands | Choose CAT24C01HU4I-GT3 for budget-constrained designs where 100k endurance and 40-year retention are acceptable |
Compared with AT24C01-10SI-2.5, the 24AA01-I/SN extends temperature capability and ESD robustness without layout or firmware changes, while the CAT24C01HU4I-GT3 trades endurance and retention for lower unit cost in non-critical applications.
Availability
AT24C01-10SI-2.5 is available at Aetrix Electronics and suitable for industrial automation, smart sensor systems, and automotive body electronics requiring stable component supply, long-term manufacturability, and guaranteed traceability.
Supply support for AT24C01-10SI-2.5 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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on embedded control and connectivity.
The AT24C01 belongs to Microchip's legacy serial EEPROM product line, designed specifically for reliable, low-power nonvolatile data storage in space-constrained industrial and automotive systems.
FAQ
What is the maximum I²C clock frequency supported by AT24C01-10SI-2.5 at 2.5V?
The AT24C01-10SI-2.5 supports a maximum I²C clock frequency of 100 kHz when operated at VCC = 2.5V. This is explicitly specified in the AC Characteristics table under "2.7-, 2.5-, 1.8-volt" conditions. At 5.0V, the device supports up to 400 kHz, but AT24C01-10SI-2.5 is rated for 2.5V–5.5V operation and maintains 100 kHz timing compliance across its entire voltage range.
Does AT24C01-10SI-2.5 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C01-10SI-2.5 requires external pull-up resistors on both SDA and SCL lines because it uses open-drain outputs. The datasheet specifies that SDA is bidirectional and open-drain driven, and SCL is an input with open-drain compatibility. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed; AT24C01-10SI-2.5 will not function correctly on an I²C bus without these pull-ups.
Can AT24C01-10SI-2.5 be used in place of AT24C01-10PI-2.5?
No - AT24C01-10SI-2.5 and AT24C01-10PI-2.5 differ in package and temperature grade: AT24C01-10SI-2.5 uses SOIC-8 (8S1) and is industrial-grade (-40°C to +85°C), while AT24C01-10PI-2.5 uses PDIP-8 (8P3) and shares the same temperature rating. They are not pin-compatible due to different footprints; PCB layout and soldering process must match the specific package of AT24C01-10SI-2.5.
What is the standby current consumption of AT24C01-10SI-2.5 at 2.5V?
The standby current (ISB2) for AT24C01-10SI-2.5 is specified as 1.4 µA (typical) and 4.0 µA (maximum) at VCC = 2.5V and TA = -40°C to +85°C. This value is measured with all inputs at VCC or VSS, confirming ultra-low quiescent power draw ideal for battery-powered or energy-harvesting systems using AT24C01-10SI-2.5.
How many devices can share the same I²C bus with AT24C01-10SI-2.5?
Up to eight AT24C01-10SI-2.5 devices can share a single I²C bus using the A0, A1, and A2 address pins to configure unique 7-bit slave addresses. Each pin sets one bit of the address, yielding 2³ = 8 possible combinations. All devices must use the same VCC and share common pull-ups; AT24C01-10SI-2.5 does not support address auto-increment or dynamic addressing.
AT24C01-10SI-2.5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C01-10SI-2.5 FAQ
1.How can I place an order for AT24C01-10SI-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01-10SI-2.5 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 AT24C01-10SI-2.5 reliable?
The price and inventory of AT24C01-10SI-2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01-10SI-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C01-10SI-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01-10SI-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01-10SI-2.5?
AT24C01-10SI-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01-10SI-2.5 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 AT24C01-10SI-2.5?
For technical support, including AT24C01-10SI-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01-10SI-2.5 requirements.
6.How does Aetrix verify that AT24C01-10SI-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C01-10SI-2.5 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 AT24C01-10SI-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C01-10SI-2.5?
All AT24C01-10SI-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01-10SI-2.5, 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 AT24C01-10SI-2.5 part is unused and in its original packaging.
Return procedure for AT24C01-10SI-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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