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Microchip Technology AT24C01A-10SI-2.5
- Part No.:
- AT24C01A-10SI-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C01A-10SI-2.5.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,688
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Product details
Overview
AT24C01A-10SI-2.5 from Microchip Technology (formerly Atmel) is a 1K-bit (128 × 8) two-wire serial EEPROM optimized for low-voltage embedded systems. It operates from 2.5V to 5.5V, supports 100 kHz I²C bus speed, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention in industrial temperature range (–40°C to +85°C). It is commonly used for configuration storage in smart meters and industrial sensor nodes.
For engineers reviewing the AT24C01A-10SI-2.5 datasheet, AT24C01A-10SI-2.5 pinout, AT24C01A-10SI-2.5 application, or AT24C01A-10SI-2.5 equivalent, key selection considerations include its 2.5V minimum supply, 8-byte page write capability, SOIC-8 industrial-grade packaging, and compatibility with standard I²C controllers requiring Schmitt-triggered noise-immune inputs.
Technical Context
The AT24C01A-10SI-2.5 implements a fixed 7-bit I²C device address with hardwired A0–A2 pins enabling up to eight devices on one bus. Its memory is organized into 16 pages of 8 bytes each, supporting both byte and page write modes with automatic address incrementing within page boundaries.
It uses open-drain SDA/SCL interfaces compliant with I²C protocol timing - including START/STOP detection, ACK polling during write cycles, and current-limited output drivers. The WP pin enables full-array hardware write protection when pulled high, while Schmitt-trigger inputs and internal noise filtering ensure robust operation in electrically noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 words × 8 bits), sufficient for small firmware config tables or calibration data sets |
| Supply Voltage Range | 2.5V to 5.5V - enables direct interface with 2.5V/3.3V microcontrollers without level shifting |
| I²C Clock Frequency | 100 kHz max - compatible with legacy and resource-constrained I²C masters |
| Write Cycle Time | 10 ms max - defines minimum interval between successive write commands |
| Endurance | 1 million write cycles - supports frequent field-updatable parameter logging |
| Data Retention | 100 years at +25°C - ensures long-term reliability in unattended deployments |
| Operating Temperature | –40°C to +85°C - qualified for industrial control and outdoor metering applications |
| Package | 8-lead JEDEC SOIC (8S1) - surface-mount compatible with standard reflow profiles |
Pinout & Package
AT24C01A-10SI-2.5 is housed in an 8-lead JEDEC SOIC package (8S1), measuring 3.99 mm × 4.98 mm × 1.73 mm, with gull-wing leads and 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired address bit; enables multi-device I²C bus addressing (A0–A2 define 3-bit slave address) |
| A1 | Device Address Input | Hardwired address bit; used with A0/A2 to select one of up to eight AT24C01A devices on same bus |
| A2 | Device Address Input | Hardwired address bit; completes 3-bit device address for bus arbitration |
| GND | Ground Reference | Return path for VCC and signal logic; must be low-impedance for stable I²C signaling |
| VCC | Power Supply | Primary power input (2.5V–5.5V); decoupling capacitor required near pin for noise immunity |
| WP | Write Protect Control | Hardware-enforced full-array write lock when pulled high; grounded for normal read/write access |
| SCL | Serial Clock Input | Open-drain clock line synchronized to I²C master; drives internal timing for data sampling |
| SDA | Serial Data I/O | Bi-directional open-drain data line; requires external pull-up resistor (typically 2.2–10 kΩ) |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables reliable I²C communication in presence of EMI or slow-rising signals on SCL/SDA lines |
| 8-byte page write mode | Reduces total write time vs. byte-by-byte writes - e.g., 8-byte update completes in one 10 ms cycle |
| Self-timed write cycle | Eliminates need for external write timing control; host can poll ACK to detect completion |
| Industrial temperature grade | Validated operation from –40°C to +85°C - suitable for factory automation and energy infrastructure |
| No-connect pins not used | A0–A2 are functional address inputs; no NC pins present - all 8 pins serve defined electrical roles |
Applications
| Smart Energy Metering | Industrial PLC Configuration |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs in utility-grade electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed data integrity across power cycles and temperature extremes. Use Value: 100-year retention and 1M endurance ensure lifetime compliance with ANSI C12.20 and IEC 62056 standards. | Use Scenario: Holding I/O mapping tables, PID tuning parameters, and firmware revision flags in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent parameter store accessed via microcontroller's I²C peripheral during boot and runtime reconfiguration. Use Value: Hardware WP pin prevents accidental overwrites during field firmware updates or transient noise events. |
| Medical Sensor Calibration | Automotive Body Control Module |
Use Scenario: Saving sensor offset/gain coefficients and patient-specific thresholds in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced to ultra-low-power MCU during sensor initialization sequence. Use Value: 2.5V operation allows direct connection to 2.5V analog front-end rails, eliminating level-shifter components. | Use Scenario: Storing seat position presets, mirror angle settings, and lighting profiles in vehicle body control units. IC Role / Device Role / Timing Role: I²C-configurable nonvolatile memory mapped into CAN gateway microcontroller's peripheral space. Use Value: SOIC-8 package supports automated optical inspection and meets AEC-Q200 stress test requirements for vibration and thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02D-SSHM-T | 2K-bit capacity (256 × 8), same 2.5V–5.5V range and SOIC-8 package; higher density with identical pinout | Supports larger configuration datasets; requires updated address handling in firmware for >128-word access | Select when future-proofing for expanded parameter sets without PCB redesign |
| M24C01-RMN6TP | 1K-bit STMicroelectronics EEPROM; 1.8V–5.5V range, 400 kHz max I²C speed, same SOIC-8 footprint | Higher-speed bus support and lower 1.8V min supply; different device address mapping (A0–A2 not used) | Choose for designs needing faster writes or 1.8V system integration, accepting minor firmware address changes |
Compared with AT24C01A-10SI-2.5, AT24C02D-SSHM-T offers double memory without layout change, while M24C01-RMN6TP provides broader voltage flexibility and faster timing but requires validation of device addressing behavior in existing I²C stacks.
Availability
AT24C01A-10SI-2.5 is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, medical sensors, and automotive body control modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT24C01A-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 broad industrial and automotive qualification expertise.
The AT24C01A-10SI-2.5 belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power nonvolatile data storage in space-constrained embedded systems operating under harsh environmental conditions.
FAQ
What is the maximum I²C clock frequency supported by AT24C01A-10SI-2.5?
The AT24C01A-10SI-2.5 supports up to 100 kHz I²C clock frequency when operating at 2.5V supply. This is specified in the AC Characteristics table under fSCL for 2.5V/2.7V/1.8V versions. Higher frequencies (up to 400 kHz) require ≥4.5V VCC, which is outside the rated range for AT24C01A-10SI-2.5.
Does AT24C01A-10SI-2.5 support partial page writes?
Yes, AT24C01A-10SI-2.5 supports partial page writes. Its 1K-bit memory is organized into 16 pages of 8 bytes each, and the device allows writing 1–8 bytes per page without overwriting adjacent locations - provided the write sequence stays within the same page boundary.
How does the Write Protect (WP) pin function on AT24C01A-10SI-2.5?
On AT24C01A-10SI-2.5, the WP pin enables hardware-level write protection: when pulled high (to VCC), it locks the entire 1K-bit array against write operations while permitting unrestricted reads; when grounded, full read/write access is restored. No software command is needed to activate this feature.
What is the standby current consumption of AT24C01A-10SI-2.5 at 2.5V?
At VCC = 2.5V and TA = 25°C, the standby current (ISB2) for AT24C01A-10SI-2.5 is specified as 1.4 µA (typical) to 4.0 µA (maximum). This ultra-low quiescent draw supports battery-powered applications where EEPROM must remain powered continuously.
Is AT24C01A-10SI-2.5 pin-compatible with other AT24Cxx family members in SOIC-8?
Yes, AT24C01A-10SI-2.5 shares identical SOIC-8 pinout and signal definitions (A0–A2, SDA, SCL, WP, VCC, GND) with AT24C02, AT24C04, AT24C08, and AT24C16 in the same package variant - enabling drop-in replacement where memory size and timing requirements align.
AT24C01A-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:
- 5ms
- 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
AT24C01A-10SI-2.5 FAQ
1.How can I place an order for AT24C01A-10SI-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01A-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 AT24C01A-10SI-2.5 reliable?
The price and inventory of AT24C01A-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 AT24C01A-10SI-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C01A-10SI-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01A-10SI-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01A-10SI-2.5?
AT24C01A-10SI-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01A-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 AT24C01A-10SI-2.5?
For technical support, including AT24C01A-10SI-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01A-10SI-2.5 requirements.
6.How does Aetrix verify that AT24C01A-10SI-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C01A-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 AT24C01A-10SI-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C01A-10SI-2.5?
All AT24C01A-10SI-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01A-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 AT24C01A-10SI-2.5 part is unused and in its original packaging.
Return procedure for AT24C01A-10SI-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C01A-10SI-2.5 Tags
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