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Microchip Technology AT24C01A-10PC-1.8
- Part No.:
- AT24C01A-10PC-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C01A-10PC-1.8.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,965
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Product details
Overview
AT24C01A-10PC-1.8 from Microchip Technology (formerly Atmel) is a 1K-bit (128 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage embedded systems. It operates from 1.8V 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 battery-powered IoT sensors for nonvolatile parameter storage.
For engineers reviewing the AT24C01A-10PC-1.8 datasheet, AT24C01A-10PC-1.8 pinout, AT24C01A-10PC-1.8 application, or AT24C01A-10PC-1.8 equivalent, key selection criteria include 1.8V minimum supply, 8-byte page write capability, SOIC-8 package compatibility, Schmitt-triggered noise-immune inputs, and industrial-grade temperature support up to +85°C.
Technical Context
The AT24C01A-10PC-1.8 implements a two-wire I²C interface with open-drain SDA/SCL pins, requiring external pull-ups. Its internal 128-word × 8-bit memory array is organized into 16 pages of 8 bytes each, enabling partial-page writes without address rollover within page boundaries.
It uses hardwired A0–A2 address inputs for multi-device bus addressing (up to eight devices), supports acknowledge polling during write cycles, and enters low-power standby mode (<3 µA at 1.8V) after STOP condition or power-up-critical for energy-constrained edge nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), sufficient for calibration coefficients, device IDs, or small configuration tables |
| Supply Voltage Range | 1.8V to 5.5V - enables direct interfacing with 1.8V logic families and mixed-voltage systems |
| I²C Clock Frequency | 100 kHz max at 1.8V - ensures reliable timing margin in noisy low-power environments |
| Write Cycle Time | 10 ms max - defines minimum interval between successive byte/page writes |
| Endurance | 1 million write cycles - supports frequent field updates in telemetry or logging applications |
| Data Retention | 100 years at +25°C - guarantees long-term validity of stored firmware parameters or security keys |
| Standby Current | 3 µA max at 1.8V - minimizes quiescent power in always-on sensor nodes |
Pinout & Package
AT24C01A-10PC-1.8 is supplied in an 8-pin PDIP (package code 8P3), 0.300" wide, with 0.100" lead pitch. The package is through-hole mountable and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired LSB of 3-bit device address; enables up to eight AT24C01A devices on one I²C bus |
| A1 | Device Address Input | Mid-bit of device address; tied high/low to configure unique slave address |
| A2 | Device Address Input | MSB of device address; determines position in I²C address map (0x50–0x57) |
| GND | Ground Reference | Return path for VCC and signal currents; must be low-impedance for noise immunity |
| VCC | Power Supply | 1.8V–5.5V input; decoupling capacitor (0.1 µF) required near pin for stable operation |
| WP | Write Protect Control | Active-high hardware lock: grounded = read/write; connected to VCC = full-array write protection |
| SCL | Serial Clock Input | Positive-edge sampled clock; open-drain requires external pull-up resistor (typically 4.7 kΩ) |
| SDA | Serial Data I/O | Bi-directional open-drain bus line; shares pull-up with SCL; supports wire-OR with other I²C devices |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables robust noise rejection on SCL/SDA lines in electrically noisy industrial enclosures |
| 8-byte page write mode | Reduces I²C transaction overhead by writing up to 8 bytes per stop condition, improving firmware update efficiency |
| Hardware write protection (WP) | Prevents accidental overwrites during power brownouts or firmware glitches without software intervention |
| 100-year data retention | Eliminates need for periodic refresh in sealed, maintenance-free deployments like smart meters |
| 1.8V operation support | Direct compatibility with modern ultra-low-power MCUs (e.g., ARM Cortex-M0+, MSP430FR) without level-shifting |
Applications
| Smart Energy Metering | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Nonvolatile parameter storage IC interfaced to an 8-bit MCU via I²C at 100 kHz under 1.8V supply. Use Value: Guarantees 100-year retention of regulatory-critical calibration data without backup batteries. | Use Scenario: Holding I/O mapping tables and PID tuning parameters in programmable logic controllers operating in factory-floor environments. IC Role / Device Role / Timing Role: Serial EEPROM providing persistent configuration storage accessible during cold boot and runtime reconfiguration. Use Value: Enables field-upgradable control logic without firmware reflashing; WP pin prevents corruption during EMI transients. |
| Wearable Health Sensor Calibration | Automotive Body Control Module (BCM) |
Use Scenario: Storing sensor offset/gain coefficients and user-specific thresholds in Bluetooth-enabled pulse oximeters. IC Role / Device Role / Timing Role: Low-power I²C EEPROM co-located with analog front-end, powered from coin-cell supply. Use Value: 3 µA standby current extends battery life beyond 2 years; 1.8V operation eliminates voltage translation. | Use Scenario: Saving seat-position memory, mirror presets, and lighting profiles in 12V automotive BCMs with local 1.8V LDO rails. IC Role / Device Role / Timing Role: Robust configuration storage IC rated for -40°C to +85°C operation, interfaced to CAN-connected microcontroller. Use Value: Withstands automotive thermal cycling and load-dump transients; WP pin blocks unintended writes during ignition events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02A-10PC-1.8 | 2K-bit (256 × 8) capacity; identical 1.8V operation, 100 kHz speed, and SOIC/PDIP packaging | Supports larger configuration sets (e.g., multi-sensor calibration banks); same pinout and footprint | Select when >128 bytes of persistent storage is required without changing PCB layout |
| M24C01-RMN6TP | 1K-bit STMicroelectronics EEPROM; 1.8V–5.5V, 100 kHz, SO8 package; no WP pin | Lacks hardware write protection; requires software-based locking or external logic for data integrity | Choose only if WP functionality is not required and second-source qualification is mandated |
Compared with AT24C01A-10PC-1.8, AT24C02A-10PC-1.8 doubles storage while maintaining identical low-voltage timing and pin compatibility, whereas M24C01-RMN6TP omits hardware write protection-making it unsuitable for safety-critical or unattended deployments where accidental writes must be physically prevented.
Availability
AT24C01A-10PC-1.8 is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, wearable health sensors, and automotive body control modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT24C01A-10PC-1.8 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 reliability and long-term product support.
The AT24Cxx family was designed for cost-sensitive, low-power embedded systems requiring robust nonvolatile storage-especially in battery-operated, industrial, and automotive applications where voltage flexibility and data integrity are critical.
FAQ
What is the maximum I²C clock frequency supported by AT24C01A-10PC-1.8?
The AT24C01A-10PC-1.8 supports a maximum I²C clock frequency of 100 kHz when operated at 1.8V. This is specified in the AC Characteristics table under fSCL for 1.8V operation. Higher frequencies (up to 400 kHz) are only guaranteed at VCC ≥ 2.7V. Using 100 kHz ensures timing compliance and noise margin in low-voltage designs.
Does AT24C01A-10PC-1.8 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C01A-10PC-1.8 requires external pull-up resistors on both SDA and SCL lines because these pins are open-drain. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed; 4.7 kΩ is commonly used for 100 kHz operation at 1.8V. Failure to install pull-ups will prevent I²C communication.
Can AT24C01A-10PC-1.8 be used in industrial temperature applications?
Yes, AT24C01A-10PC-1.8 is rated for commercial temperature range (0°C to +70°C). For industrial use (-40°C to +85°C), the correct variant is AT24C01A-10PI-1.8. The "PC" suffix denotes commercial grade; "PI" indicates industrial grade. Using AT24C01A-10PC-1.8 outside its specified range may result in timing violations or data corruption.
How does the Write Protect (WP) pin function on AT24C01A-10PC-1.8?
On AT24C01A-10PC-1.8, the WP pin enables hardware-level write protection: when tied to VCC, all memory writes (byte and page) are blocked; when grounded, normal read/write operations proceed. This provides fail-safe protection against firmware bugs or power faults that might corrupt stored data-no software command is needed to activate it.
What is the page size and write endurance of AT24C01A-10PC-1.8?
AT24C01A-10PC-1.8 has an 8-byte page size and guarantees 1 million write cycles per memory location. Page writes allow up to 8 sequential bytes to be written in a single I²C transaction, improving efficiency. Endurance is specified at 25°C and applies to each individual byte address, ensuring long-term reliability in frequently updated applications like sensor calibration logging.
AT24C01A-10PC-1.8 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C01A-10PC-1.8 FAQ
1.How can I place an order for AT24C01A-10PC-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01A-10PC-1.8 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-10PC-1.8 reliable?
The price and inventory of AT24C01A-10PC-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01A-10PC-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C01A-10PC-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01A-10PC-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01A-10PC-1.8?
AT24C01A-10PC-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01A-10PC-1.8 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-10PC-1.8?
For technical support, including AT24C01A-10PC-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01A-10PC-1.8 requirements.
6.How does Aetrix verify that AT24C01A-10PC-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C01A-10PC-1.8 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-10PC-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C01A-10PC-1.8?
All AT24C01A-10PC-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01A-10PC-1.8, 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-10PC-1.8 part is unused and in its original packaging.
Return procedure for AT24C01A-10PC-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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