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Microchip Technology AT24C04-10PC
- Part No.:
- AT24C04-10PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C04-10PC.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,204
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Product details
Overview
AT24C04-10PC from Microchip Technology (formerly Atmel) is a 4-kbit (512 × 8) I²C-compatible serial EEPROM with 2.7V to 5.5V supply operation, 100 kHz maximum clock frequency at 2.7V, write-protect pin for hardware data protection, and 16-byte page write capability. It serves as nonvolatile configuration storage in embedded control systems requiring low-power, space-constrained memory.
For engineers reviewing the AT24C04-10PC datasheet, AT24C04-10PC pinout, AT24C04-10PC application, or AT24C04-10PC equivalent, key selection criteria include its 2.7V–5.5V operating range, 16-byte page write mode, WP pin functionality, endurance of 1 million write cycles, and compatibility with standard I²C bus timing at 100 kHz.
Technical Context
The AT24C04-10PC implements a two-wire (I²C) serial interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. Its internal memory is organized as 32 pages of 16 bytes each, requiring a 9-bit data word address for random access.
Device addressing uses A2 and A1 pins for hardwired slave address selection (A0 is NC), supporting up to four devices on a single I²C bus. Write operations are self-timed with a maximum 10 ms cycle duration and support both byte and page write modes without requiring external erase commands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 kbit (512 × 8 bits), sufficient for firmware calibration tables or device configuration registers |
| Supply Voltage Range | 2.7V to 5.5V - supports direct interfacing with 3.3V and 5V microcontrollers without level shifting |
| I²C Clock Frequency | 100 kHz max at 2.7V - ensures reliable communication in electrically noisy industrial environments |
| Page Write Size | 16 bytes per page - reduces I²C transaction overhead when updating multi-byte parameter sets |
| Write Endurance | 1 million cycles - enables frequent logging or runtime parameter updates over product lifetime |
| Data Retention | 100 years at +25°C - guarantees long-term integrity of stored calibration or security keys |
| Operating Temperature | 0°C to +70°C (Commercial grade) - validated for use in consumer and industrial control panels |
Pinout & Package
AT24C04-10PC is supplied in an 8-pin PDIP (Plastic Dual Inline Package), 0.300" wide, with JEDEC-standard pinout and through-hole mounting compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect | Not used for device addressing; must be left unconnected or tied to GND/VCC without functional impact |
| A1 | Device Address Input | Hardwired address bit enabling up to four AT24C04-10PC devices on one I²C bus |
| A2 | Device Address Input | Hardwired address bit used with A1 to form 2-bit slave address (0x50–0x53) |
| GND | Ground Reference | Common return path for VCC, SDA, SCL, and WP; required for proper logic threshold referencing |
| VCC | Power Supply | Primary DC supply input (2.7–5.5V); decoupling capacitor recommended within 1 cm |
| WP | Write Protect Control | Hardware-enabled lock: high = full-array write protection; low = normal read/write operation |
| SCL | Serial Clock Input | Master-generated clock signal with Schmitt-trigger input for robust noise rejection |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up resistor (typically 4.7 kΩ) |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 2.7V supply - eliminates need for voltage regulators in battery-powered designs |
| Hardware write protection | WP pin enables irreversible lock of stored data during field operation or firmware update sequences |
| Noise-immune interface | Schmitt-trigger inputs on SCL and filtered SDA reduce susceptibility to EMI in motor-drive or power-supply adjacent layouts |
| Page write capability | 16-byte burst writes cut I²C transaction count by up to 94% vs. byte-by-byte programming for configuration blocks |
| High endurance & retention | 1M write cycles and 100-year data retention meet automotive and industrial long-lifecycle requirements |
Applications
| Industrial Sensor Calibration | Consumer Appliance Configuration |
|---|---|
Use Scenario: Storing factory-trimmed sensor offset/gain coefficients and temperature compensation parameters in pressure or humidity transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed during power-up initialization via I²C by host MCU. Use Value: Enables field-replaceable sensors without recalibration; WP pin prevents accidental overwrite during routine diagnostics. | Use Scenario: Holding user preferences (e.g., display brightness, language, default wash cycle) across power cycles in smart washing machines or ovens. IC Role / Device Role / Timing Role: Persistent parameter store written infrequently but read at every boot; operates at 3.3V I²C speed. Use Value: Eliminates need for backup batteries; 16-byte page writes allow atomic update of related settings (e.g., all UI parameters). |
| Medical Device Settings | Networking Equipment Identity |
Use Scenario: Securing regulatory-compliant operational limits (e.g., max infusion rate, alarm thresholds) in portable infusion pumps. IC Role / Device Role / Timing Role: Tamper-resistant memory where WP pin is tied to a hardware interlock signal during service mode. Use Value: Meets IEC 62304 safety requirements by preventing unauthorized runtime modification of critical parameters. | Use Scenario: Storing MAC address, serial number, and firmware version in Ethernet switches or Wi-Fi access points. IC Role / Device Role / Timing Role: Factory-programmed identity storage accessed once per boot via I²C; minimal read current (<1 µA standby). Use Value: Reduces BOM cost vs. larger SPI flash; 2.7V compatibility allows shared 3.3V rail with PHY and controller. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C04-10PI | Same 4K capacity and pinout, but rated for -40°C to +85°C industrial temperature range | Required for outdoor or under-hood automotive/industrial deployments where ambient exceeds 70°C | Select AT24C04-10PI when extended temperature operation is mandatory; otherwise AT24C04-10PC suffices for commercial environments. |
| M24C04-RMN6TP | 4K I²C EEPROM from STMicroelectronics; identical 8-pin SOIC package, 1.7–5.5V supply, 400 kHz max clock | Offers higher-speed 400 kHz operation at 2.7V - suitable when faster configuration loading is needed | Choose M24C04-RMN6TP if system design requires >100 kHz I²C throughput at low voltage; verify WP pin behavior matches legacy firmware logic. |
Compared with AT24C04-10PI and M24C04-RMN6TP, the AT24C04-10PC provides optimal cost-performance balance for commercial-grade applications with 2.7V–5.5V supply and 100 kHz timing constraints, while maintaining full pin and software compatibility within the AT24Cxx family.
Availability
AT24C04-10PC is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer appliance configuration, medical device settings, and networking equipment identity management requiring stable component supply and long-term obsolescence planning.
Supply support for AT24C04-10PC 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 broad industrial and automotive qualification coverage.
The AT24C04-10PC belongs to Microchip's AT24Cxx serial EEPROM product line, designed specifically for low-voltage, low-power nonvolatile data storage in space-constrained embedded systems.
FAQ
What is the memory organization of the AT24C04-10PC?
The AT24C04-10PC contains 4096 bits organized as 512 words of 8 bits each, internally structured into 32 pages of 16 bytes. This layout supports efficient 16-byte page writes and requires a 9-bit data word address for random access. The AT24C04-10PC uses A2 and A1 for device addressing, with A0 designated as no-connect per its datasheet specification.
Does the AT24C04-10PC support 400 kHz I²C operation?
No, the AT24C04-10PC is rated for 100 kHz maximum I²C clock frequency when operating at 2.7V, as confirmed in its ordering information table and AC characteristics section. While higher-voltage variants like AT24C04-10PC (blank suffix) support 400 kHz at 5V, the -10PC-2.7 variant - which matches AT24C04-10PC's documented 2.7V operation - is strictly limited to 100 kHz for guaranteed timing compliance.
How does the Write Protect (WP) pin function on the AT24C04-10PC?
On the AT24C04-10PC, the WP pin enables hardware-level write protection: when pulled high to VCC, it locks the entire 4K memory array against write or page-write commands; when grounded, full read/write access is restored. This behavior is electrically implemented and does not require firmware intervention, making it ideal for safeguarding calibration data during field service.
What packages are available for the AT24C04-10PC?
The AT24C04-10PC is offered exclusively in the 8-pin PDIP (Plastic Dual Inline Package), 0.300" wide, per its ordering code suffix "PC" and the AT24C04 Ordering Information table. Alternative packages such as SOIC (SC) or TSSOP (TC) exist for other variants (e.g., AT24C04N-10SC), but the AT24C04-10PC designation specifically denotes the PDIP package.
Is the AT24C04-10PC compatible with 1.8V I²C buses?
No, the AT24C04-10PC is specified for 2.7V to 5.5V operation only. Although the broader AT24Cxx family includes -1.8 suffix variants (e.g., AT24C04-10PC-1.8), the AT24C04-10PC part number itself corresponds to the -2.7V version per the "AT24C04 Ordering Information" table, and is not characterized or guaranteed for reliable operation below 2.7V.
AT24C04-10PC 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:
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C04-10PC FAQ
1.How can I place an order for AT24C04-10PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C04-10PC 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 AT24C04-10PC reliable?
The price and inventory of AT24C04-10PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C04-10PC is usually 5 days.
3.What payment methods are accepted for AT24C04-10PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C04-10PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C04-10PC?
AT24C04-10PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C04-10PC 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 AT24C04-10PC?
For technical support, including AT24C04-10PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C04-10PC requirements.
6.How does Aetrix verify that AT24C04-10PC is sourced from the original manufacturer or authorized distributors?
All AT24C04-10PC 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 AT24C04-10PC meets industry standards.
7.What is the process for return or replacement of AT24C04-10PC?
All AT24C04-10PC units undergo pre-shipment inspection (PSI). If there is an issue with AT24C04-10PC, 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 AT24C04-10PC part is unused and in its original packaging.
Return procedure for AT24C04-10PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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