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Microchip Technology AT24C04N-10SI-2.5
- Part No.:
- AT24C04N-10SI-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C04N-10SI-2.5.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,977
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Product details
Overview
AT24C04N-10SI-2.5 from Microchip Technology (formerly Atmel) is a 4K-bit (512 × 8) I²C-compatible 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 the WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in industrial sensor calibration storage, power meter configuration memory, and firmware parameter backup.
For engineers reviewing the AT24C04N-10SI-2.5 datasheet, AT24C04N-10SI-2.5 pinout, AT24C04N-10SI-2.5 application, or AT24C04N-10SI-2.5 equivalent, key selection criteria include its 2.5V minimum supply, industrial temperature range (−40°C to +85°C), JEDEC SOIC-8 package, 16-byte page write capability, and Schmitt-triggered noise-immune inputs.
Technical Context
The AT24C04N-10SI-2.5 implements a two-wire I²C interface with open-drain SDA and active-high SCL, supporting standard-mode (100 kHz) timing at 2.5V–5.5V. Its internal architecture organizes 4096 bits into 32 pages of 16 bytes each, requiring a 9-bit word address for random access.
Device addressing uses A2 and A1 pins (A0 is NC), enabling up to four AT24C04 devices on one bus. Write protection is controlled by the WP pin: tied to GND for full read/write access, tied to VCC to lock the entire 4K array against writes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4096 bits (512 × 8), sufficient for storing calibration coefficients, device IDs, or boot configuration flags in compact systems. |
| Supply Voltage Range | 2.5V to 5.5V - enables direct interfacing with 2.5V/3.3V microcontrollers without level shifting. |
| I²C Clock Frequency | 100 kHz max at 2.5V - ensures reliable communication in noise-sensitive industrial environments. |
| Write Cycle Time | 10 ms max - defines minimum interval between successive byte/page writes; impacts firmware update latency. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - meets long-life requirements for field-deployed equipment. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade operation without derating. |
| Package | 8-lead JEDEC SOIC (8S1) - surface-mount compatible with standard reflow profiles and automated assembly. |
Pinout & Package
AT24C04N-10SI-2.5 is housed in an 8-lead JEDEC SOIC package (8S1), 3.9mm × 4.9mm body, 1.27mm pitch, gull-wing leads. Pin 1 is marked by a bevelled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect (NC) | Internally unused; must be left unconnected - not tied high/low to avoid unintended behavior. |
| A1 | Device Address Input | Hardwired address bit; selects one of four possible addresses (00, 01, 10, 11) when combined with A2. |
| A2 | Device Address Input | Hardwired address bit; enables multi-device I²C bus topology with up to four AT24C04 units. |
| GND | Ground Reference | Return path for VCC and I/O signals; requires low-impedance connection to system ground plane. |
| VCC | Power Supply | Primary power input (2.5V–5.5V); bypassing with 0.1 µF ceramic capacitor near pin is mandatory. |
| WP | Write Protect Control | Active-high hardware lock: logic high disables all write operations across the full 4K memory array. |
| SCL | I²C Clock Input | Positive-edge sampled clock; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC. |
| SDA | I²C Bidirectional Data | Open-drain I/O; shares bus with other open-drain devices; requires same pull-up as SCL. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables robust operation in electrically noisy environments (e.g., motor drives, PLCs) by rejecting sub-threshold glitches on SCL/SDA. |
| 16-byte page write mode | Reduces firmware update time by up to 16× vs. byte-write - critical for efficient field calibration uploads. |
| Hardware write protection | Prevents accidental overwrites during power transients or software faults - eliminates need for software-based lock bits. |
| Low standby current | 4 µA max at 2.5V - extends battery life in always-on IoT edge nodes and portable instrumentation. |
| Industrial temperature grade | Qualified from −40°C to +85°C - ensures reliability in uncontrolled enclosures, outdoor meters, and factory automation. |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Storing tariff schedules, pulse constants, and meter ID in utility-grade electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed data integrity across 15+ year field life. Use Value: Eliminates need for battery-backed SRAM; withstands >1M write cycles during daily billing updates. |
Use Scenario: Retaining calibrated offset/gain values and sensor health logs in wireless vibration monitors. IC Role / Device Role / Timing Role: Persistent parameter storage accessed only during startup or maintenance mode. Use Value: Enables field recalibration without firmware reflashing; immune to brown-out corruption due to WP pin control. |
| Embedded HMI Panel | Medical Diagnostic Device |
Use Scenario: Saving user preferences (language, brightness, contrast) and last-displayed screen state. IC Role / Device Role / Timing Role: Low-power, infrequent-write memory co-located with display controller MCU. Use Value: Supports 2.5V operation matching modern low-voltage display drivers; 100-year retention avoids periodic refresh. |
Use Scenario: Archiving device serial number, calibration date, and safety-critical self-test results. IC Role / Device Role / Timing Role: Tamper-resistant audit log storage with hardware-enforced write lock after commissioning. Use Value: WP pin tied to secure boot state prevents unauthorized modification of regulatory compliance records. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C04D-SSHM-T | Same 4K capacity, 2.5V–5.5V, SOIC-8, but manufactured by Microchip post-Atmel acquisition; identical pinout and AC/DC specs. | Identical use cases; differs only in part marking and tape-and-reel packaging format. | Select when sourcing from newer Microchip distribution channels or requiring RoHS-compliant MSL1 handling. |
| M24C04-RMN6TP | 4K I²C EEPROM (STMicroelectronics); 1.7V–5.5V supply, 400 kHz max, SOIC-8, but no dedicated WP pin - write protection relies on software address locking. | Lacks hardware-level write lock; unsuitable where physical fault tolerance is required (e.g., medical, energy). | Choose only if higher bus speed (400 kHz) is mandatory and WP functionality is implemented elsewhere in system design. |
Compared with AT24C04N-10SI-2.5, AT24C04D-SSHM-T offers identical electrical and mechanical compatibility with updated logistics, while M24C04-RMN6TP trades hardware write protection for broader voltage range and faster I²C - making it viable only when system-level safeguards replace pin-level locking.
Availability
AT24C04N-10SI-2.5 is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter configuration, and embedded HMI parameter storage requiring stable component supply across extended product lifecycles.
Supply support for AT24C04N-10SI-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, qualify, and support the AT24C series under its broad EEPROM portfolio.
The AT24C04N-10SI-2.5 belongs to Microchip's serial EEPROM product line, designed specifically for cost-sensitive, space-constrained industrial and commercial systems needing reliable nonvolatile storage with minimal external components.
FAQ
What is the maximum I²C clock frequency supported by AT24C04N-10SI-2.5?
The AT24C04N-10SI-2.5 supports up to 100 kHz I²C clock frequency when operating at 2.5V. This is specified in the AC Characteristics table under fSCL for 2.5V/2.7V/1.8V versions. At 5.0V, it supports 400 kHz, but AT24C04N-10SI-2.5 is rated for 2.5V–5.5V operation with 100 kHz guaranteed across its full voltage range.
Does AT24C04N-10SI-2.5 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C04N-10SI-2.5 requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. 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 with short PCB traces.
How is device addressing configured for AT24C04N-10SI-2.5 on an I²C bus?
AT24C04N-10SI-2.5 uses A2 and A1 pins for hardware device addressing (A0 is NC). These pins set the two least-significant bits of the 7-bit I²C slave address (1010xxX), allowing up to four AT24C04N-10SI-2.5 devices on the same bus. The full address is 0b1010A2A10 for writes and 0b1010A2A11 for reads.
What happens to the AT24C04N-10SI-2.5 when the WP pin is connected to VCC?
When the WP pin of AT24C04N-10SI-2.5 is connected to VCC, hardware write protection is activated and the entire 4K memory array becomes read-only. All write attempts - including byte, page, and sequential writes - are ignored, and the device responds only to read commands until WP is returned to GND.
Is AT24C04N-10SI-2.5 compatible with 1.8V I²C systems?
No, AT24C04N-10SI-2.5 is not rated for 1.8V operation. Its suffix "-2.5" specifies a minimum supply voltage of 2.5V (2.5V–5.5V range). For 1.8V systems, the correct variant is AT24C04N-10SI-1.8, which guarantees 100 kHz operation down to 1.8V and has different DC characteristics.
AT24C04N-10SI-2.5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 4Kbit
- Memory Organization:
- 512 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C04N-10SI-2.5 FAQ
1.How can I place an order for AT24C04N-10SI-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C04N-10SI-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 AT24C04N-10SI-2.5 reliable?
The price and inventory of AT24C04N-10SI-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 AT24C04N-10SI-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C04N-10SI-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C04N-10SI-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C04N-10SI-2.5?
AT24C04N-10SI-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C04N-10SI-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 AT24C04N-10SI-2.5?
For technical support, including AT24C04N-10SI-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C04N-10SI-2.5 requirements.
6.How does Aetrix verify that AT24C04N-10SI-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C04N-10SI-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 AT24C04N-10SI-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C04N-10SI-2.5?
All AT24C04N-10SI-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C04N-10SI-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 AT24C04N-10SI-2.5 part is unused and in its original packaging.
Return procedure for AT24C04N-10SI-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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