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Microchip Technology AT24C01-10PC-2.5
- Part No.:
- AT24C01-10PC-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C01-10PC-2.5.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,041
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Product details
Overview
AT24C01-10PC-2.5 from Microchip Technology (formerly Atmel) is a 1K-bit (128 × 8) serial EEPROM with I²C-compatible 2-wire interface, optimized for low-voltage embedded systems operating from 2.5V to 5.5V. It supports 100 kHz clock frequency at 2.5V, features 4-byte page write mode, self-timed 10 ms max write cycle, and delivers 1 million write endurance with 100-year data retention. Used in industrial sensor calibration storage and consumer device configuration memory.
For engineers reviewing the AT24C01-10PC-2.5 datasheet, AT24C01-10PC-2.5 pinout, AT24C01-10PC-2.5 application, or AT24C01-10PC-2.5 equivalent, key selection criteria include VCC range compatibility (2.5–5.5V), SOIC-8 package footprint, 100 kHz AC timing at low voltage, standby current ≤4 µA at 2.5V, and I²C bus-level interoperability with microcontrollers such as PIC, AVR, and ARM Cortex-M series.
Technical Context
The AT24C01-10PC-2.5 implements a fixed 7-bit I²C slave address with three hardware address pins (A0–A2), enabling up to eight devices on a shared bus. Its memory array is organized as 128 individually addressable bytes, accessed via sequential or random read/write operations using standard START/STOP/ACK protocols.
It operates exclusively in standard-mode I²C (100 kHz max at 2.5V), with open-drain SDA/SCL pins requiring external pull-ups. The device enters automatic standby mode after STOP condition completion and supports acknowledge polling to detect write cycle completion without fixed delay timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), sufficient for small configuration tables, calibration coefficients, or boot parameters in space-constrained designs. |
| Supply Voltage Range | 2.5V to 5.5V - enables direct interfacing with 2.5V logic domains and backward compatibility with 3.3V/5V systems without level shifters. |
| I²C Clock Frequency | 100 kHz maximum at 2.5V - defines reliable communication speed under low-voltage operation; not rated for 400 kHz at this VCC. |
| Write Cycle Time | 10 ms maximum - determines minimum interval between successive write commands; requires ACK polling or fixed delay for flow control. |
| Standby Current | ≤4 µA at VCC = 2.5V - critical for battery-powered applications where quiescent power must remain sub-µA per peripheral. |
| Endurance | 1 million write cycles - supports frequent field updates (e.g., metering logs, firmware flags) over product lifetime. |
| Data Retention | 100 years at +25°C - ensures nonvolatile storage integrity across extended deployment periods without refresh. |
Pinout & Package
AT24C01-10PC-2.5 is supplied in an 8-pin JEDEC-standard SOIC package (package code 8S1), 3.90 mm × 4.90 mm body, 1.27 mm lead pitch, gull-wing leads. Pin 1 marked by notch or bevel; pin 1 corner located at top-left when marking side faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Hardware Address Inputs | Set lower 3 bits of 7-bit I²C slave address; tied high/low to configure unique device address on shared bus (up to 8 units). |
| SDA | Serial Data I/O | Open-drain bidirectional line for I²C data transfer; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC. |
| SCL | Serial Clock Input | Open-drain clock input synchronized to master controller; rising edge samples data, falling edge drives data. |
| VCC | Power Supply | Primary supply rail (2.5–5.5V); powers internal logic and memory array; decoupling capacitor (0.1 µF) required near pin. |
| GND | Ground Reference | Return path for all internal circuits and I/O; must be connected to system ground plane with low-impedance trace. |
| TEST | Factory Test Input | Internally connected to GND or VCC during production test; must be externally tied to GND or VCC (not left floating) per datasheet guidance. |
| NC | No Connect | Three pins (pins 1–3 in PDIP/SOIC/MSOP/TSSOP) are unconnected die pads; no electrical function; may be left unconnected or grounded. |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation (2.5V) | Enables integration into 2.5V core logic domains without voltage translation, reducing BOM count and layout complexity. |
| 4-Byte Page Write Mode | Reduces total write time vs. byte-by-byte writes - four related parameters (e.g., sensor offsets) can be stored atomically in one transaction. |
| Self-Timed Write Cycle | Eliminates need for precise software timing delays; host confirms completion via ACK polling instead of fixed 10 ms wait. |
| 1 Million Write Endurance | Supports daily reconfiguration over 27+ years - suitable for industrial logging, medical device settings, and automotive diagnostics storage. |
| ESD Protection >3000V | Meets HBM Class 2 requirements, improving robustness during handling and board assembly without additional protection circuitry. |
Applications
| Industrial Sensor Calibration | Consumer Device Configuration |
|---|---|
|
Use Scenario: Storing factory-trimmed temperature/humidity sensor gain and offset coefficients in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed at power-up via I²C; no real-time timing constraints. Use Value: Enables field-replaceable sensors with pre-loaded calibration data, eliminating manual recalibration during maintenance. |
Use Scenario: Saving user preferences (brightness, language, network SSID) in smart thermostats and Wi-Fi speakers. IC Role / Device Role / Timing Role: Low-power configuration memory updated infrequently; accessed only during boot or settings change. Use Value: Maintains user experience continuity across power cycles while consuming <4 µA in standby - extends battery life in portable variants. |
| Medical Diagnostic Equipment | Automotive Body Control Modules |
|
Use Scenario: Recording diagnostic fault codes and usage counters in portable ECG monitors and infusion pumps. IC Role / Device Role / Timing Role: Reliable event-logging memory with guaranteed 100-year retention and 1M write cycles. Use Value: Meets IEC 62304 software lifecycle requirements for Class B medical devices without requiring redundant storage schemes. |
Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: I²C-configurable memory accessible by MCU during ignition-on initialization sequence. Use Value: Supports personalized driver profiles without increasing CAN bus traffic or MCU flash wear from frequent writes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M24C01-RMN6TP | 1K-bit, 1.7–5.5V supply, 400 kHz max at ≥2.5V, SOIC-8, same pinout but different TEST pin behavior (internally pulled down). | Higher-speed operation possible at 2.5V; lacks explicit automotive qualification; lower standby current (1 µA typical at 2.5V). | Preferred when faster write throughput or ultra-low standby is prioritized over automotive-grade screening. |
| BR24G01NUX-5TR | 1K-bit, 1.6–5.5V, 400 kHz capable, TSSOP-8, built-in write protect (WP) pin, no TEST pin. | Includes hardware write protection; smaller TSSOP footprint; no TEST pin simplifies layout but removes factory test access point. | Chosen when board space is constrained and hardware-level write lock is required for safety-critical parameter storage. |
Compared with AT24C01-10PC-2.5, M24C01-RMN6TP offers higher I²C speed headroom at 2.5V and lower quiescent current, while BR24G01NUX-5TR trades TEST functionality for integrated write protection and smaller packaging - both require validation of TEST/WP pin handling and timing compliance in existing firmware.
Availability
AT24C01-10PC-2.5 is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer device configuration, and automotive body control module applications requiring stable component supply, long-term obsolescence management, and commercial-temperature-grade reliability.
Supply support for AT24C01-10PC-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 acquired Atmel in 2016 and maintains full technical and manufacturing continuity for the AT24Cxx EEPROM family. The company specializes in microcontrollers, analog, and memory solutions for embedded control markets.
The AT24Cxx series was designed specifically for cost-sensitive, low-power I²C-based configuration and calibration storage in industrial, automotive, and consumer electronics - emphasizing ease of integration, long-term data integrity, and broad voltage compatibility.
FAQ
What is the maximum I²C clock frequency supported by AT24C01-10PC-2.5?
The AT24C01-10PC-2.5 supports a maximum I²C clock frequency of 100 kHz when operating at VCC = 2.5V. This is specified in the AC Characteristics table under "2.7-, 2.5-, 1.8-volt" conditions. It is not rated for 400 kHz operation at 2.5V - that speed applies only to 5.0V operation per the same datasheet section. Using 400 kHz at 2.5V may result in timing violations and communication failure.
Does AT24C01-10PC-2.5 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C01-10PC-2.5 requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. The datasheet specifies typical values of 2.2 kΩ to 10 kΩ depending on bus capacitance and desired rise time. Without pull-ups, the bus cannot transition high, preventing proper START/STOP detection and data transmission.
What is the function of the TEST pin on AT24C01-10PC-2.5?
The TEST pin on AT24C01-10PC-2.5 is a factory test input used during wafer sort and final test. Per the datasheet, it must be externally tied to either GND or VCC - it must never be left floating. While not used in normal operation, incorrect biasing (e.g., open or capacitive coupling) may cause undefined behavior or increased current draw.
Can AT24C01-10PC-2.5 be used in automotive applications?
AT24C01-10PC-2.5 is rated for commercial temperature range (0°C to +70°C) and is not qualified to AEC-Q100 standards. For automotive use, Microchip offers the AT24C01-10PI-2.5 variant, which is tested and screened for industrial temperature (-40°C to +85°C) and includes automotive-grade reliability documentation. Use of AT24C01-10PC-2.5 in under-hood or safety-critical automotive systems is not recommended.
How many devices can share the same I²C bus with AT24C01-10PC-2.5?
Up to eight AT24C01-10PC-2.5 devices can share the same I²C bus, enabled by the three hardware address pins (A0, A1, A2). Each combination of high/low states sets a unique 3-bit address suffix, resulting in distinct 7-bit slave addresses (0x50–0x57). Bus loading must remain within I²C specification limits (400 pF max), so trace length and number of devices must be jointly evaluated.
AT24C01-10PC-2.5 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:
- 10ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C01-10PC-2.5 FAQ
1.How can I place an order for AT24C01-10PC-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01-10PC-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 AT24C01-10PC-2.5 reliable?
The price and inventory of AT24C01-10PC-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 AT24C01-10PC-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C01-10PC-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01-10PC-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01-10PC-2.5?
AT24C01-10PC-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01-10PC-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 AT24C01-10PC-2.5?
For technical support, including AT24C01-10PC-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01-10PC-2.5 requirements.
6.How does Aetrix verify that AT24C01-10PC-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C01-10PC-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 AT24C01-10PC-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C01-10PC-2.5?
All AT24C01-10PC-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01-10PC-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 AT24C01-10PC-2.5 part is unused and in its original packaging.
Return procedure for AT24C01-10PC-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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