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Microchip Technology AT24C04AN-10SI
- Part No.:
- AT24C04AN-10SI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C04AN-10SI.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,564
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Product details
Overview
AT24C04AN-10SI from Microchip Technology (formerly Atmel) is a 4-kbit I²C-compatible serial EEPROM organized as 512 × 8 bits, operating from 2.7V to 5.5V, featuring hardware write protection via the WP pin, 100 kHz I²C speed at 2.7V, and industrial temperature range (–40°C to +85°C). It is used in embedded systems for parameter storage, calibration data retention, and configuration memory where low-voltage operation and robust nonvolatile storage are required.
For engineers reviewing the AT24C04AN-10SI datasheet, AT24C04AN-10SI pinout, AT24C04AN-10SI application, or AT24C04AN-10SI equivalent, this page delivers verified electrical specs, JEDEC SOIC-8 package mapping, real-world use cases in industrial control and automotive subsystems, and two validated alternative parts with documented functional and interface differences.
Technical Context
The AT24C04AN-10SI implements a true 2-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs, supporting bidirectional data transfer and standard ACK/NACK handshaking. Its internal address counter enables current-address, random-address, and sequential read modes without external addressing logic.
It uses hard-wired A2 and A1 pins for device addressing (up to four devices on one bus), with A0 designated as no-connect; write protection is activated when WP = VCC, locking the upper 2K array. The device performs self-timed 10 ms max write cycles and supports 8-byte page writes only in 2K variants - but AT24C04AN-10SI supports 16-byte page writes per its 4K organization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4096 bits (512 × 8), enabling storage of 512 bytes of configuration or calibration data |
| Supply Voltage Range | 2.7V to 5.5V - supports mixed-voltage system integration without level shifters |
| I²C Clock Frequency | 100 kHz maximum at 2.7V - ensures reliable timing margin in noisy industrial environments |
| Write Cycle Time | 10 ms maximum - defines minimum interval between successive write commands |
| Endurance | 1 million write cycles - guarantees long-term field reliability in frequent-update applications |
| Data Retention | 100 years at +25°C - ensures firmware or calibration data integrity over product lifetime |
| Operating Temperature | –40°C to +85°C - qualified for industrial and under-hood automotive use |
| ESD Protection | >3000V HBM - reduces risk of damage during board handling and system integration |
Pinout & Package
AT24C04AN-10SI is supplied in an 8-pin JEDEC SOIC package (package code 8S1), measuring 3.99 mm × 4.98 mm × 1.75 mm, with gull-wing leads and standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No-connect (NC) | Internally unused; must be left unconnected or tied to GND/VCC - no effect on addressing |
| A1 | Device Address Input | Hard-wired address bit; combines with A2 to select one of up to four devices on shared I²C bus |
| A2 | Device Address Input | Hard-wired address bit; enables multi-device I²C topology without software address conflict |
| GND | Ground Reference | Return path for VCC and all I/O signals; requires low-impedance PCB connection |
| VCC | Power Supply | Primary supply input (2.7–5.5V); decoupling capacitor (0.1 µF) required near pin |
| WP | Write Protect Control | Hardware lock: WP = VCC protects upper 2K array; WP = GND enables full read/write access |
| SCL | Serial Clock Input | Master-generated clock signal; open-drain compatible; requires external pull-up resistor |
| SDA | Serial Data I/O | Bidirectional, open-drain data line; shared across multiple I²C devices; requires pull-up |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin disables writes to upper 2K array when pulled high - prevents accidental firmware corruption |
| Noise-Resilient I²C Interface | Schmitt-triggered, filtered SDA/SCL inputs suppress EMI-induced glitches in factory-floor environments |
| 16-Byte Page Write Mode | Enables efficient bulk writes within single I²C transaction - reduces bus overhead vs. byte-by-byte writes |
| Low Standby Current | 4.0 µA max at 2.7V - extends battery life in always-on sensor nodes and portable instrumentation |
| Industrial Temperature Rating | –40°C to +85°C operation - validated for deployment in motor control units and PLC modules |
| High Endurance & Retention | 1M write cycles and 100-year data retention - eliminates need for wear-leveling firmware in simple loggers |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
Use Scenario: Storing temperature-compensated offset/gain coefficients for analog sensor front-ends in factory automation transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration memory holding calibration constants accessed at power-up by MCU. Use Value: Eliminates factory recalibration after firmware updates; leverages 100-year retention to match equipment service life. |
Use Scenario: Saving user preferences (mirror position, seat settings) and fault logs in vehicle body control units. IC Role / Device Role / Timing Role: I²C slave EEPROM interfacing directly with 8-bit/16-bit automotive microcontrollers. Use Value: WP pin prevents inadvertent overwrite during CAN/LIN bus activity; 2.7V operation supports start-stop battery voltage sag. |
| Smart Energy Meter Firmware Log | Medical Infusion Pump Parameter Storage |
Use Scenario: Recording firmware update timestamps, meter tamper events, and energy consumption snapshots in ANSI C12.22-compliant meters. IC Role / Device Role / Timing Role: Low-power, high-reliability data logger co-located with metrology SoC. Use Value: 1M endurance withstands daily logging over 10+ years; 100 kHz I²C avoids bus contention with real-time metrology tasks. |
Use Scenario: Storing drug library profiles, dose limits, and operator audit trails in Class II medical infusion pumps. IC Role / Device Role / Timing Role: Secure configuration store with hardware write lock to prevent unauthorized parameter changes. Use Value: WP = VCC blocks runtime writes to critical safety parameters; industrial temp rating supports sterilization cycle exposure. |
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, 1.7–5.5V supply, 1 MHz I²C, TSSOP-8 package; no WP pin | Lacks hardware write protection; higher speed suits high-throughput data loggers | Select when WP functionality is unnecessary and faster I²C timing is required |
| M24C04-RMN6TP | 4K EEPROM, 1.8–5.5V, 400 kHz I²C, SOIC-8, integrated WP function, 3 µA standby | Higher max I²C speed and lower ISB support ultra-low-power battery designs | Prefer for new designs needing enhanced noise immunity and sub-5 µA sleep current |
Compared with AT24C04AN-10SI, AT24C04D-SSHM-T removes write protection but adds 1 MHz capability, while M24C04-RMN6TP retains WP and improves speed/standby current - both require validation of WP pin usage and timing margins in existing layouts.
Availability
AT24C04AN-10SI is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, and smart energy meter firmware logging requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for AT24C04AN-10SI 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 family of serial EEPROMs.
The AT24C04AN-10SI belongs to Microchip's legacy AT24Cxx serial EEPROM product line, designed specifically for cost-sensitive, space-constrained embedded systems needing reliable, low-voltage nonvolatile storage with minimal external components.
FAQ
What is the maximum I²C clock frequency supported by AT24C04AN-10SI?
The AT24C04AN-10SI supports up to 100 kHz I²C clock frequency when operated at 2.7V, as specified in its AC characteristics table. This limit ensures timing margin compliance under worst-case voltage and temperature conditions. While some systems may achieve higher speeds, 100 kHz is the guaranteed maximum for robust operation across the full –40°C to +85°C industrial range. The AT24C04AN-10SI does not support 400 kHz mode - that capability applies only to 5.0V versions like AT24C04A-10PI.
Does AT24C04AN-10SI have a write protect pin, and how does it function?
Yes, AT24C04AN-10SI includes a dedicated WP (Write Protect) pin. When WP is tied to VCC, the upper 2K (2048 bits) of the 4K memory array is locked against write operations, while the lower 2K remains writable. When WP is grounded, full read/write access is enabled. This hardware-level protection prevents accidental overwrites during firmware updates or system resets - a critical feature for safety-critical applications using AT24C04AN-10SI.
What package type is used for AT24C04AN-10SI, and what are its key mechanical dimensions?
AT24C04AN-10SI uses an 8-pin JEDEC SOIC package (package code 8S1), with 1.27 mm lead pitch, 3.99 mm × 4.98 mm body size, and 1.75 mm maximum height. Its gull-wing leads are compatible with standard reflow soldering profiles. This package is footprint-compatible with other 8S1-marked EEPROMs and microcontrollers, enabling drop-in replacement in space-constrained industrial PCBs where AT24C04AN-10SI is deployed.
How many devices can share the same I²C bus when using AT24C04AN-10SI?
Up to four AT24C04AN-10SI devices can operate on a single I²C bus. This is achieved using the A2 and A1 address pins - each combination of A2/A1 (00, 01, 10, 11) selects a unique 7-bit device address. The A0 pin is a no-connect in the AT24C04A family, so it is not used for addressing. This multi-drop capability simplifies system architecture in applications such as modular PLC backplanes where multiple AT24C04AN-10SI units store module-specific configuration.
What is the write endurance and data retention specification for AT24C04AN-10SI?
The AT24C04AN-10SI is rated for 1 million write cycles per memory location and guarantees 100 years of data retention at +25°C. These specifications are measured and characterized per JEDEC standards, not estimated. In practice, this means AT24C04AN-10SI reliably stores calibration data, firmware logs, or user settings across decades of field operation - eliminating the need for complex wear-leveling algorithms in most embedded applications.
AT24C04AN-10SI 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C04AN-10SI FAQ
1.How can I place an order for AT24C04AN-10SI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C04AN-10SI 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 AT24C04AN-10SI reliable?
The price and inventory of AT24C04AN-10SI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C04AN-10SI is usually 5 days.
3.What payment methods are accepted for AT24C04AN-10SI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C04AN-10SI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C04AN-10SI?
AT24C04AN-10SI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C04AN-10SI 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 AT24C04AN-10SI?
For technical support, including AT24C04AN-10SI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C04AN-10SI requirements.
6.How does Aetrix verify that AT24C04AN-10SI is sourced from the original manufacturer or authorized distributors?
All AT24C04AN-10SI 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 AT24C04AN-10SI meets industry standards.
7.What is the process for return or replacement of AT24C04AN-10SI?
All AT24C04AN-10SI units undergo pre-shipment inspection (PSI). If there is an issue with AT24C04AN-10SI, 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 AT24C04AN-10SI part is unused and in its original packaging.
Return procedure for AT24C04AN-10SI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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