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Microchip Technology AT24C01A-10PC-2.5
- Part No.:
- AT24C01A-10PC-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C01A-10PC-2.5.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,719
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Product details
Overview
AT24C01A-10PC-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 - used in firmware parameter storage, calibration data logging, and configuration memory in industrial controllers.
For engineers reviewing the AT24C01A-10PC-2.5 datasheet, AT24C01A-10PC-2.5 pinout, AT24C01A-10PC-2.5 application, or AT24C01A-10PC-2.5 equivalent, key selection criteria include VCC range compatibility (2.5–5.5 V), 100 kHz I²C timing compliance, 8-byte page write capability, WP pin functionality, and SOIC/PDIP/TSSOP package options for board-level integration.
Technical Context
The AT24C01A-10PC-2.5 implements a standard two-wire (I²C-compatible) serial interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. It uses hard-wired A0–A2 address pins to support up to eight devices on a single bus, and employs an internal 7-bit word address counter for random and sequential read operations.
Write operations are self-timed (max 10 ms), with byte and 8-byte page write modes enabled. The device enters standby mode after STOP condition receipt or power-up, drawing only 4 µA typical at 2.5 V - making it suitable for battery-backed or energy-constrained applications requiring nonvolatile configuration storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 words × 8 bits); sufficient for small configuration tables or device ID storage. |
| Supply Voltage Range | 2.5 V to 5.5 V; enables direct interfacing with 2.5 V, 3.3 V, and 5 V microcontrollers without level shifting. |
| I²C Clock Frequency | 100 kHz max; compatible with legacy and low-speed I²C masters; timing validated per AC specs at 2.5 V. |
| Write Cycle Time | 10 ms maximum; defines minimum interval between write commands; impacts firmware update latency. |
| Endurance | 1 million write cycles; supports frequent recalibration or runtime parameter updates over product lifetime. |
| Data Retention | 100 years at +25°C; ensures long-term reliability of stored settings without refresh. |
| Standby Current | 4 µA typical at 2.5 V; critical for ultra-low-power sleep modes in portable or remote-sensor applications. |
Pinout & Package
AT24C01A-10PC-2.5 is supplied in an 8-pin PDIP (package code 8P3), with 0.300" body width and through-hole mounting. Pin functions are electrically identical across SOIC and TSSOP variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Device Address Inputs | Hard-wired inputs enabling up to eight AT24C01A devices on one I²C bus; all three used for 1K/2K family. |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up; supports wire-OR with other I²C peripherals. |
| SCL | Serial Clock Input | Positive-edge clock input; includes Schmitt trigger and noise filtering for robust timing in noisy environments. |
| WP | Write Protect Control | Hardware-enabled lock: tied to VCC to disable all writes; tied to GND for normal read/write operation. |
| VCC | Power Supply | Primary supply rail (2.5–5.5 V); powers internal logic and memory array; decoupling capacitor required. |
| GND | Ground Reference | System ground return path; must be low-impedance and shared with host MCU for signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 2.5 V supply - eliminates need for voltage translators when interfacing with 2.5 V or 3.3 V MCUs. |
| Hardware write protection | WP pin provides deterministic, glitch-immune write disable - prevents accidental overwrites during power transitions. |
| Noise-suppressed inputs | Schmitt-triggered SCL and filtered inputs reject >100 ns glitches - improves reliability in electrically noisy industrial enclosures. |
| Page write capability | 8-byte page writes reduce I²C transaction overhead by up to 8× vs. byte-by-byte writes - accelerates bulk configuration updates. |
| High endurance & retention | 1M write cycles and 100-year data retention meet industrial-grade requirements for field-deployed equipment. |
Applications
| Industrial Sensor Node | Smart Meter Calibration |
|---|---|
Use Scenario: Storing temperature-compensated sensor offset values and linearization coefficients in a battery-powered environmental monitor. IC Role / Device Role / Timing Role: Nonvolatile configuration memory holding factory-trimmed calibration parameters accessed at boot and updated during field recalibration. Use Value: Enables accurate measurements across temperature ranges without requiring external storage or host intervention; 2.5 V operation extends battery life. |
Use Scenario: Retaining tariff schedules, metering constants, and tamper-event logs in utility smart meters operating at 3.3 V. IC Role / Device Role / Timing Role: Secure, write-protected parameter store for revenue-critical settings; WP pin prevents unauthorized firmware or billing changes. Use Value: Meets ANSI C12.22 security requirements via hardware write lock; 1M endurance supports decades of daily log entries. |
| Embedded PLC Configuration | IoT Gateway Boot Settings |
Use Scenario: Holding user-defined I/O mapping, scan rates, and alarm thresholds in a DIN-rail programmable logic controller. IC Role / Device Role / Timing Role: Persistent configuration register bank accessed via I²C during startup and runtime reconfiguration. Use Value: Survives power loss and firmware updates; 100 kHz bus speed ensures fast load times even with full 128-byte config table. |
Use Scenario: Storing Wi-Fi SSID/password, MQTT broker addresses, and OTA update keys in a cellular-connected edge gateway. IC Role / Device Role / Timing Role: Secure credential storage isolated from main flash; WP pin disabled only during trusted provisioning sequences. Use Value: Prevents credential leakage during field servicing; 4 µA standby current minimizes always-on connectivity power budget impact. |
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-2.5 | 2K-bit capacity (256 × 8); identical 2.5–5.5 V range, 100 kHz speed, and PDIP package. | Supports larger configuration sets; requires software address extension beyond 7-bit word addressing. | Select when >128 bytes of persistent storage is needed without changing PCB layout or I²C protocol stack. |
| M24C01-RMN6TP | 1K-bit STMicroelectronics EEPROM; 1.8–5.5 V range, 400 kHz max speed, same 8-pin SOIC footprint. | Higher speed and wider VCC range; lacks dedicated WP pin - write protection relies on software or external logic. | Choose for designs needing faster writes or broader voltage tolerance, accepting trade-off in hardware-level write security. |
Compared with AT24C01A-10PC-2.5, the AT24C02A-10PC-2.5 doubles storage while maintaining pinout and timing; the M24C01-RMN6TP offers higher speed and voltage flexibility but removes hardware write lock - impacting security-critical deployments.
Availability
AT24C01A-10PC-2.5 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter calibration, and embedded PLC configuration requiring stable component supply across extended temperature and voltage ranges.
Supply support for AT24C01A-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 continues to manufacture and support the AT24Cxx family of serial EEPROMs with full backward compatibility and long-term supply commitment.
The AT24C01A product line delivers cost-effective, low-power nonvolatile memory for space-constrained embedded systems where I²C interface simplicity and hardware write protection are essential design requirements.
FAQ
What is the maximum clock frequency supported by AT24C01A-10PC-2.5?
The AT24C01A-10PC-2.5 supports a maximum I²C clock frequency of 100 kHz when operating within its 2.5–5.5 V supply range. This is specified in the AC Characteristics table under fSCL for 2.5-, 2.7-, and 1.8-volt versions. The device does not support 400 kHz operation in this variant - that speed is reserved for the 5.0 V (4.5–5.5 V) version (e.g., AT24C01A-10PC).
Does AT24C01A-10PC-2.5 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C01A-10PC-2.5 requires external pull-up resistors on both SDA and SCL lines because its SDA pin is open-drain and SCL is a CMOS input with Schmitt trigger. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and desired rise time; values must comply with I²C standard timing constraints for 100 kHz operation.
How does the Write Protect (WP) pin function on AT24C01A-10PC-2.5?
On AT24C01A-10PC-2.5, the WP pin enables hardware write protection: when pulled high to VCC, all write operations (byte and page) to the entire 1K memory array are blocked; when grounded, normal read and write operations proceed. This behavior is electrically defined and does not depend on internal registers or software control.
What package type is used for AT24C01A-10PC-2.5?
AT24C01A-10PC-2.5 uses an 8-pin PDIP (Plastic Dual Inline Package) with 0.300" body width (package code 8P3). Its pinout matches JEDEC MS-001 BA standard and is mechanically and electrically compatible with the SOIC (8S1) and TSSOP (8T) variants of the same part number suffix.
Can AT24C01A-10PC-2.5 be used in automotive applications?
AT24C01A-10PC-2.5 is rated for commercial temperature range (0°C to +70°C) and is not qualified for automotive AEC-Q100 stress testing. For automotive use, Microchip offers automotive-grade variants such as AT24C01A-10PI-2.5 (industrial range: −40°C to +85°C) or dedicated automotive EEPROMs with extended qualification and PPAP support.
AT24C01A-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:
- 5ms
- 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
AT24C01A-10PC-2.5 FAQ
1.How can I place an order for AT24C01A-10PC-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01A-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 AT24C01A-10PC-2.5 reliable?
The price and inventory of AT24C01A-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 AT24C01A-10PC-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C01A-10PC-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01A-10PC-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01A-10PC-2.5?
AT24C01A-10PC-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01A-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 AT24C01A-10PC-2.5?
For technical support, including AT24C01A-10PC-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01A-10PC-2.5 requirements.
6.How does Aetrix verify that AT24C01A-10PC-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C01A-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 AT24C01A-10PC-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C01A-10PC-2.5?
All AT24C01A-10PC-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01A-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 AT24C01A-10PC-2.5 part is unused and in its original packaging.
Return procedure for AT24C01A-10PC-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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