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Microchip Technology AT24C01A-10PI-2.7
- Part No.:
- AT24C01A-10PI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C01A-10PI-2.7.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,269
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Product details
Overview
AT24C01A-10PI-2.7 from Microchip Technology (formerly Atmel) is a 1-Kbit (128 × 8) two-wire serial EEPROM optimized for low-voltage industrial applications. It operates from 2.7V 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. It is used in embedded systems for storing calibration data, configuration settings, and device identifiers.
For engineers reviewing the AT24C01A-10PI-2.7 datasheet, AT24C01A-10PI-2.7 pinout, AT24C01A-10PI-2.7 application, or AT24C01A-10PI-2.7 equivalent, key selection criteria include industrial temperature range (–40°C to +85°C), 2.7V minimum VCC compatibility, 8-byte page write capability, and PDIP/SOIC/TSSOP package options with verified JEDEC SOIC-8 footprint.
Technical Context
The AT24C01A-10PI-2.7 implements a standard I²C-compatible 2-wire interface with open-drain SDA and edge-triggered SCL, supporting bi-directional data transfer and Schmitt-triggered noise-immune inputs. Its internal memory is organized as 16 pages of 8 bytes each, requiring a 7-bit word address for random access.
Write protection is enforced by the WP pin: tied to VCC, it locks the full 1K array; tied to GND, normal read/write operations proceed. The device enters standby mode after STOP condition receipt and supports acknowledge polling to detect write cycle completion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 words × 8 bits), sufficient for small firmware config or sensor calibration tables |
| Supply Voltage Range | 2.7V to 5.5V - enables direct interfacing with 3.3V and 5V microcontrollers without level shifting |
| I²C Clock Frequency | 100 kHz max at 2.7V - ensures reliable timing margin in noisy industrial environments |
| Write Cycle Time | 10 ms max - defines minimum interval between successive byte/page writes |
| Endurance | 1 million write cycles - supports frequent field updates over product lifetime |
| Data Retention | 100 years at +25°C - guarantees long-term storage integrity without refresh |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and automation |
Pinout & Package
AT24C01A-10PI-2.7 is supplied in an 8-lead JEDEC SOIC (8S1) package, 0.150" wide, with standard 1.27 mm pitch and gull-wing leads. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired input enabling up to eight AT24C01A devices on one I²C bus; must match external pull-up/down |
| A1 | Device Address Input | Second address bit for multi-device addressing; tied high/low to configure unique 3-bit slave address |
| A2 | Device Address Input | Third address bit; all three (A0–A2) define 3-bit portion of 7-bit I²C device address (1010xxx) |
| GND | Ground Reference | Return path for VCC and signal currents; requires low-impedance connection to system ground plane |
| VCC | Power Supply | Primary supply input (2.7–5.5V); decoupling capacitor (0.1 µF) required within 10 mm of pin |
| WP | Write Protect Control | Active-high hardware lock: logic high disables all writes to entire memory array |
| SCL | Serial Clock Input | Positive-edge clock for data sampling; requires external pull-up resistor (typically 4.7 kΩ) |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; shared across multiple I²C devices with single pull-up |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 2.7V VCC - eliminates need for voltage regulators in 3.3V systems |
| Hardware write protection | WP pin enables irreversible lock of full memory array during power-up or runtime |
| Page write capability | 8-byte page writes reduce I²C transaction overhead versus byte-by-byte programming |
| Noise-immune inputs | Schmitt-triggered SCL/SDA with 100 ns noise suppression - improves robustness in EMI-prone environments |
| High endurance & retention | 1M write cycles and 100-year data retention - validated for mission-critical industrial logging |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensors in PLC modules. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed at boot via I²C; no timing constraints beyond standard 100 kHz bus rate. Use Value: Enables plug-and-play sensor replacement without manual recalibration; retains values across power loss and firmware updates. |
Use Scenario: Holding user-defined network settings (IP, subnet, gateway) in industrial gateways. IC Role / Device Role / Timing Role: Persistent configuration store written infrequently but read at every power-on reset. Use Value: Eliminates need for external configuration files or cloud sync; supports fully offline deployment in secure networks. |
| Consumer Appliance State Memory | Medical Device Usage Logging |
Use Scenario: Recording last-used cooking mode, temperature, and timer settings in smart ovens. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced to 3.3V MCU; accessed only during state save/load events. Use Value: Provides seamless user experience with persistent settings across AC power cycles and firmware upgrades. |
Use Scenario: Logging operational hours and self-test results in portable diagnostic equipment. IC Role / Device Role / Timing Role: Tamper-resistant event logger using WP pin to prevent accidental overwrite during service. Use Value: Meets IEC 62304 traceability requirements; stores >10,000 timestamped entries within 1K capacity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C01D-SSHM-T | Same 1K capacity, 2.5–5.5V range, SOIC-8, but rated for –40°C to +125°C and uses newer process | Supports extended automotive temperature range; not qualified for industrial-only designs requiring legacy qualification | Select when operating above +85°C or requiring AEC-Q100 alignment |
| M24C01-RMN6TP | 1K, 1.7–5.5V, SOIC-8, 400 kHz max at 5V, but only 100 kHz at 1.8V; no WP pin | Lacks hardware write protection; requires software-based lock mechanisms or external logic | Choose if higher-speed 5V operation is critical and WP functionality is implemented elsewhere |
Compared with AT24C01A-10PI-2.7, AT24C01D-SSHM-T extends temperature range and reliability for harsh environments, while M24C01-RMN6TP trades write protection for broader low-voltage operation and higher 5V speed - both require layout review due to non-pin-compatible WP implementation or thermal derating.
Availability
AT24C01A-10PI-2.7 is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and consumer appliance designs requiring stable component supply, long-lifecycle support, and guaranteed industrial temperature performance.
Supply support for AT24C01A-10PI-2.7 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 acquired Atmel in 2016 and maintains full backward compatibility, documentation, and manufacturing continuity for the AT24C series EEPROMs.
The AT24C01A product line was designed specifically for cost-sensitive, space-constrained industrial and commercial systems needing reliable, low-power nonvolatile storage with minimal external components.
FAQ
What is the maximum I²C clock frequency supported by AT24C01A-10PI-2.7?
The AT24C01A-10PI-2.7 supports up to 100 kHz I²C clock frequency when operated within its 2.7V to 5.5V supply range. This limit ensures timing margin compliance under worst-case industrial temperature and voltage conditions. Higher speeds (e.g., 400 kHz) require ≥4.5V VCC and are not guaranteed for AT24C01A-10PI-2.7 per its ordering option suffix "-2.7".
Does AT24C01A-10PI-2.7 include hardware write protection?
Yes, AT24C01A-10PI-2.7 includes a dedicated Write Protect (WP) pin. When WP is driven high (to VCC), the entire 1K memory array is locked against write or erase operations. When WP is grounded, normal read and write functions operate. This hardware-level protection is independent of I²C commands and remains active across power cycles.
What package types are available for AT24C01A-10PI-2.7?
AT24C01A-10PI-2.7 is offered exclusively in the 8-lead JEDEC SOIC (8S1) package - a 0.150"-wide, gull-wing surface-mount outline with 1.27 mm lead pitch. While the AT24C01A family also supports PDIP and TSSOP, the "-PI-2.7" suffix specifically denotes the industrial-temperature SOIC variant.
How many devices can share the same I²C bus with AT24C01A-10PI-2.7?
Up to eight AT24C01A-10PI-2.7 devices can coexist on a single I²C bus. This is enabled by the three hardware-configurable address pins (A0, A1, A2), which combine with the fixed "1010" prefix to form a unique 7-bit slave address. Each device must have a distinct A0–A2 combination to avoid bus contention.
What is the write endurance and data retention specification for AT24C01A-10PI-2.7?
AT24C01A-10PI-2.7 is specified for 1 million write/erase cycles per memory location and 100 years of data retention at +25°C. These values are production-tested and guaranteed across the full industrial temperature range (–40°C to +85°C), making it suitable for applications requiring long-term field reliability without periodic refresh.
AT24C01A-10PI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C01A-10PI-2.7 FAQ
1.How can I place an order for AT24C01A-10PI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01A-10PI-2.7 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-10PI-2.7 reliable?
The price and inventory of AT24C01A-10PI-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01A-10PI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C01A-10PI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01A-10PI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01A-10PI-2.7?
AT24C01A-10PI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01A-10PI-2.7 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-10PI-2.7?
For technical support, including AT24C01A-10PI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01A-10PI-2.7 requirements.
6.How does Aetrix verify that AT24C01A-10PI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C01A-10PI-2.7 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-10PI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C01A-10PI-2.7?
All AT24C01A-10PI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01A-10PI-2.7, 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-10PI-2.7 part is unused and in its original packaging.
Return procedure for AT24C01A-10PI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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