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Microchip Technology AT24C01A-10PU-2.7
- Part No.:
- AT24C01A-10PU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C01A-10PU-2.7.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,731
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Product details
Overview
AT24C01A-10PU-2.7 from Microchip Technology is a 1K-bit (128 × 8) two-wire serial EEPROM optimized for low-voltage industrial applications, operating from 2.7V to 5.5V, featuring 100 kHz I²C compatibility at 1.8V and 400 kHz at 2.7V/5V, with hardware write protection via WP pin and 8-byte page write capability.
For engineers reviewing the AT24C01A-10PU-2.7 datasheet, AT24C01A-10PU-2.7 pinout, AT24C01A-10PU-2.7 application, or AT24C01A-10PU-2.7 equivalent, key selection considerations include its PDIP-8 package, 1.8V/2.7V dual-voltage support, 1 million write cycles endurance, 100-year data retention, and Schmitt-trigger noise-suppressed inputs for robust bus operation in noisy embedded systems.
Technical Context
The AT24C01A-10PU-2.7 implements a standard I²C-compatible two-wire interface with open-drain SDA and edge-triggered SCL, supporting byte and 8-byte page writes with self-timed internal write cycles up to 5 ms. Its address pins A0–A2 are hard-wired for device addressing, enabling up to eight devices on a single bus.
It uses a 7-bit word address space internally organized as 16 pages of 8 bytes each, with automatic address rollover within pages during sequential writes. Write protection is controlled solely by the WP pin state-low for normal operation, high for full-array lockout-without software intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), sufficient for small configuration storage or calibration data in microcontroller-based systems |
| Supply Voltage Range | 2.7V to 5.5V - supports direct interfacing with 3.3V and 5V logic without level shifting |
| I²C Clock Frequency | 400 kHz max at VCC ≥ 2.7V - enables faster firmware updates than legacy 100 kHz EEPROMs |
| Write Endurance | 1 million cycles - suitable for logging or counter applications requiring frequent updates |
| Data Retention | 100 years at +25°C - ensures long-term reliability in unattended or maintenance-free deployments |
| Page Write Size | 8 bytes per page - reduces I²C transaction overhead when writing contiguous parameter sets |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade operation without derating |
Pinout & Package
AT24C01A-10PU-2.7 is supplied in an 8-lead JEDEC PDIP package (0.300" wide body), pin-compatible with legacy through-hole designs and compatible with standard wave-soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired input for 3-bit slave address; enables up to eight AT24C01A-10PU-2.7 devices on one I²C bus |
| A1 | Device Address Input | Second bit of 3-bit hardware address; tied high/low to configure unique I²C address |
| A2 | Device Address Input | Most significant bit of 3-bit hardware address; determines position in multi-device topology |
| GND | Ground Reference | System return path for all internal circuitry and I/O; must be low-impedance for noise immunity |
| VCC | Power Supply | Primary supply rail (2.7–5.5V); powers EEPROM core and I/O buffers; decoupling capacitor required |
| WP | Write Protect Control | Hardware-enforced lock: grounded = read/write enabled; VCC = full-array write inhibition |
| SCL | Serial Clock Input | Positive-edge clock for synchronous data transfer; requires external pull-up resistor |
| SDA | Serial Data I/O | Bidirectional open-drain line shared across I²C bus; requires external pull-up resistor |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger, filtered inputs | Enables reliable I²C communication in electrically noisy environments (e.g., motor drives, power supplies) |
| Self-timed write cycle (≤5 ms) | Eliminates need for external timing control or polling delay loops in host firmware |
| Partial page writes allowed | Permits updating individual bytes within an 8-byte page without rewriting entire page |
| 100-year data retention | Guarantees nonvolatile storage integrity over product lifetime without refresh cycles |
| RoHS-compliant green package | Meets environmental compliance requirements for industrial and consumer electronics |
Applications
| Industrial Sensor Calibration | Consumer Remote Control Memory |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in pressure or humidity sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed at power-up by MCU via I²C before sensor initialization. Use Value: Enables plug-and-play accuracy without host-side calibration; 1K capacity accommodates multi-point correction data. |
Use Scenario: Retaining user-programmed channel presets, volume levels, and IR code learning history in universal remotes. IC Role / Device Role / Timing Role: Low-power persistent memory updated infrequently but read at every button press or boot. Use Value: 1 µA standby current at 2.7V extends battery life; WP pin prevents accidental overwrites during ESD events. |
| Medical Device Settings Backup | Automotive Body Control Module |
Use Scenario: Saving patient-specific therapy parameters (e.g., infusion rate, alarm thresholds) in portable drug pumps. IC Role / Device Role / Timing Role: Fail-safe storage element that retains critical settings across power loss or reset events. Use Value: 1M write cycles support daily recalibration; 100-year retention meets medical device regulatory longevity requirements. |
Use Scenario: Storing seat/mirror position memory, lighting profiles, and door lock configurations in entry-level BCMs. IC Role / Device Role / Timing Role: I²C slave device interfaced directly to 8-bit automotive MCU with minimal GPIO usage. Use Value: PDIP-8 package allows cost-effective through-hole assembly; –40°C to +85°C rating satisfies AEC-Q200 ambient requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C01B-SSHM-T | Successor part with identical 1K capacity, same PDIP-8 footprint, but improved 1.7V–5.5V voltage range and enhanced ESD tolerance (4 kV HBM). | Recommended for new designs requiring extended low-voltage operation or higher robustness in automotive or industrial environments. | Select AT24C01B-SSHM-T if designing for 1.7V minimum supply or requiring qualification under AEC-Q100 Grade 2. |
| STMicroelectronics M24C01-RMN6TP | 1K I²C EEPROM in SOIC-8; supports 1.8V–5.5V, 400 kHz, but lacks dedicated WP pin - write protection implemented via software lock bits only. | Suitable where board space constraints favor surface-mount packaging and hardware WP is not mandatory. | Choose M24C01-RMN6TP when migrating from through-hole to SOIC layout and software-controlled protection suffices. |
Compared with AT24C01A-10PU-2.7, the AT24C01B-SSHM-T offers broader voltage flexibility and higher reliability for next-gen designs, while the M24C01-RMN6TP trades hardware write protection for smaller footprint and alternate sourcing - both require validation of WP functionality and package compatibility in existing layouts.
Availability
AT24C01A-10PU-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer remote control memory, and medical device settings backup requiring stable component supply and long-lifecycle support.
Supply support for AT24C01A-10PU-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 is a leading provider of microcontrollers, analog components, and memory solutions, delivering high-reliability semiconductor products for industrial, automotive, and consumer markets.
The AT24C01A-10PU-2.7 belongs to Microchip's AT24Cxx family of serial EEPROMs, designed specifically for space-constrained, low-power embedded systems requiring robust, standards-compliant nonvolatile storage with minimal external components.
FAQ
What is the maximum I²C clock frequency supported by AT24C01A-10PU-2.7?
The AT24C01A-10PU-2.7 supports up to 400 kHz I²C clock frequency when operated at VCC ≥ 2.7V. At lower voltages (e.g., 1.8V), the maximum rated speed drops to 100 kHz. This dual-speed capability allows flexible integration across mixed-voltage systems while maintaining timing compliance per I²C specification.
Does AT24C01A-10PU-2.7 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C01A-10PU-2.7 requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and desired rise time; Microchip recommends 4.7 kΩ for standard-mode (100 kHz) operation with ≤400 pF total bus load.
How does the WP pin function on AT24C01A-10PU-2.7?
The WP (Write Protect) pin on AT24C01A-10PU-2.7 provides hardware-level write inhibition: when pulled high to VCC, it disables all write operations to the entire 1K memory array; when grounded, full read/write access is enabled. This eliminates reliance on software locks and prevents corruption during power transients or firmware faults.
Is AT24C01A-10PU-2.7 pin-compatible with other AT24Cxx EEPROMs in PDIP-8 package?
AT24C01A-10PU-2.7 shares identical pinout and electrical interface with AT24C02-10PU-2.7 and AT24C04-10PU-2.7 in PDIP-8, but memory size and page structure differ. While physical replacement is possible, firmware must be updated to match the target device's address width (7-bit vs. 8-bit vs. 9-bit) and page boundaries to avoid miswrites.
What is the endurance and data retention specification for AT24C01A-10PU-2.7?
AT24C01A-10PU-2.7 guarantees 1 million write/erase cycles per memory location and 100 years of data retention at +25°C. These specifications are validated per JEDEC standards and apply across the full operating temperature range (–40°C to +85°C), making it suitable for mission-critical long-life applications such as medical or infrastructure equipment.
AT24C01A-10PU-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-10PU-2.7 FAQ
1.How can I place an order for AT24C01A-10PU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01A-10PU-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-10PU-2.7 reliable?
The price and inventory of AT24C01A-10PU-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-10PU-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C01A-10PU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01A-10PU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01A-10PU-2.7?
AT24C01A-10PU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01A-10PU-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-10PU-2.7?
For technical support, including AT24C01A-10PU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01A-10PU-2.7 requirements.
6.How does Aetrix verify that AT24C01A-10PU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C01A-10PU-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-10PU-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C01A-10PU-2.7?
All AT24C01A-10PU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01A-10PU-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-10PU-2.7 part is unused and in its original packaging.
Return procedure for AT24C01A-10PU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C01A-10PU-2.7 Tags
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