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Microchip Technology AT24C04-10PC-2.7
- Part No.:
- AT24C04-10PC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C04-10PC-2.7.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,723
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Product details
Overview
AT24C04-10PC-2.7 from Microchip Technology (formerly Atmel) is a 4-kbit (512 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 2.7V 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 commonly used in industrial sensor calibration storage and consumer device configuration memory.
For engineers reviewing the AT24C04-10PC-2.7 datasheet, AT24C04-10PC-2.7 pinout, AT24C04-10PC-2.7 application, or AT24C04-10PC-2.7 equivalent, key selection factors include its 2.7V–5.5V supply range, 16-byte page write capability, SOIC-8 package compatibility, and Schmitt-triggered noise-immune inputs for reliable operation in noisy environments.
Technical Context
The AT24C04-10PC-2.7 implements a two-wire I²C interface with open-drain SDA/SCL pins, requiring external pull-ups. Its internal address space is organized as 32 pages of 16 bytes each, supporting both byte and page write modes with automatic address incrementing within pages.
Device addressing uses A2 and A1 pins (A0 is NC), enabling up to four AT24C04 devices on a single I²C bus. The WP pin provides hardware-level write protection for the entire 4K-bit array when pulled high, while standby current remains ≤4 µA at 2.7V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 kbit (512 words × 8 bits), sufficient for storing firmware configuration, calibration coefficients, or user settings in compact microcontroller systems. |
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration with 3.3V and 5V logic domains without level-shifting. |
| I²C Bus Speed | 100 kHz maximum - compatible with legacy and low-power microcontrollers; timing meets standard-mode I²C specification. |
| Page Write Size | 16 bytes per page - reduces write transaction overhead versus byte writes, improving efficiency during bulk parameter updates. |
| Write Cycle Time | 10 ms max - defines minimum interval between write commands; impacts real-time logging latency and firmware update sequencing. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - ensures long-term reliability in field-deployed equipment with infrequent but critical nonvolatile updates. |
| Operating Temperature | 0°C to +70°C (Commercial grade) - validated for use in indoor consumer, office, and light-industrial environments. |
Pinout & Package
AT24C04-10PC-2.7 is supplied in an 8-pin PDIP (Plastic Dual Inline Package), 0.300" wide, with through-hole mounting. Pin 1 is marked by a notch or dot; the package complies with JEDEC MS-001 BA standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect (NC) | Not internally bonded; must be left unconnected or tied to GND/VCC without functional impact. |
| A1 | Device Address Input | Hardwired to set one of four possible I²C slave addresses (combined with A2); determines bus arbitration and multi-device addressing. |
| A2 | Device Address Input | Hardwired to set one of four possible I²C slave addresses (combined with A1); enables up to four AT24C04 devices on same bus. |
| GND | Ground Reference | System return path for VCC and signal references; requires low-impedance connection to minimize noise coupling into SDA/SCL. |
| VCC | Power Supply | Primary power input (2.7V–5.5V); bypass capacitor (0.1 µF ceramic) recommended near pin for transient suppression. |
| WP | Write Protect Control | Active-high hardware lock: logic high disables all write operations (including page/byte writes), protecting stored data from accidental overwrite. |
| SCL | Serial Clock Input | Open-drain input synchronized to master clock; requires external pull-up; controls timing of data sampling and transfer direction. |
| SDA | Serial Data I/O | Open-drain bidirectional line shared across I²C bus; supports read/write transfers and ACK/NACK signaling per I²C protocol. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables robust noise immunity on SCL/SDA lines in electrically noisy industrial or automotive-adjacent environments. |
| 16-byte page write mode | Reduces I²C transaction count by up to 16× versus byte writes, lowering bus occupancy and host CPU overhead during configuration updates. |
| Hardware write protection (WP) | Eliminates need for software-based lock mechanisms; prevents corruption during power brownouts or firmware glitches. |
| Low standby current (≤4 µA @ 2.7V) | Extends battery life in portable or energy-harvesting applications where EEPROM remains powered but idle for extended periods. |
| 100-year data retention | Guarantees integrity of calibration data, serial numbers, or security keys across full product lifecycle without refresh cycles. |
Applications
| Industrial Sensor Calibration | Consumer Device Configuration |
|---|---|
Use Scenario: Storing factory-calibrated temperature offset, humidity gain, and linearity correction coefficients in smart environmental sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed at power-up and during periodic self-test routines. Use Value: Enables plug-and-play accuracy without host MCU reprogramming; retains values across power cycles and firmware updates. |
Use Scenario: Saving user preferences (brightness, volume, language) and network credentials in smart home hubs and audio systems. IC Role / Device Role / Timing Role: Persistent configuration memory updated only on user action or setup completion. Use Value: Ensures consistent UX after reboot or OTA update; avoids reliance on volatile RAM or complex flash wear-leveling. |
| Medical Diagnostic Equipment | Automotive Body Control Modules |
Use Scenario: Recording usage logs, error counters, and calibration history in portable blood glucose meters and pulse oximeters. IC Role / Device Role / Timing Role: Secure, tamper-resistant event logging with guaranteed write completion before power loss. Use Value: Supports regulatory traceability requirements; withstands >1M write cycles needed for daily clinical use over 5+ years. |
Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in vehicle door modules and control units. IC Role / Device Role / Timing Role: Low-power configuration storage accessible over LIN/I²C bridge interfaces during ignition-on initialization. Use Value: Delivers instant personalization without delay; operates reliably across automotive temperature range with minimal quiescent current draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C04-10PU-2.7 | Same 4K-bit capacity, 2.7V–5.5V operation, and PDIP-8 package; differs only in tape-and-reel vs. tube packaging (PU = tube, PC = tube). | No functional difference; identical electrical and timing specs; interchangeable in all designs. | Select AT24C04-10PU-2.7 if tube packaging is preferred for manual prototyping or low-volume assembly. |
| M24C04-RMN6TP | 4K-bit I²C EEPROM from STMicroelectronics; supports 1.7V–5.5V, 400 kHz max speed, and same 16-byte page size; different pinout (SO8, not PDIP). | Requires PCB layout change due to SO8 footprint; offers wider voltage range but lacks A1/A2 address pins (single-device bus only). | Choose M24C04-RMN6TP only when upgrading to surface-mount assembly or needing sub-2.7V operation; verify WP functionality matches system protection needs. |
Compared with AT24C04-10PU-2.7, the AT24C04-10PC-2.7 offers identical performance in tube packaging optimized for through-hole evaluation and small-batch production; versus M24C04-RMN6TP, it provides proven A1/A2 address flexibility and PDIP compatibility but requires higher minimum supply voltage.
Availability
AT24C04-10PC-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer device configuration, medical diagnostic logging, and automotive body control module applications requiring stable component supply and long-term obsolescence management.
Supply support for AT24C04-10PC-2.7 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 AT24C series EEPROMs, ensuring long-term support and qualification consistency.
The AT24C04 belongs to Microchip's serial EEPROM product line, designed specifically for cost-sensitive, low-power embedded systems requiring reliable, byte-addressable nonvolatile storage with simple two-wire interface integration.
FAQ
What is the memory organization of the AT24C04-10PC-2.7?
The AT24C04-10PC-2.7 contains 4,096 bits organized as 512 words of 8 bits each, internally structured into 32 pages of 16 bytes. This allows efficient 16-byte page writes and requires a 9-bit data word address for random access. The device uses A2 and A1 pins for hardware address selection, with A0 designated as no-connect per its datasheet specification.
Does the AT24C04-10PC-2.7 support 3.3V microcontroller interfaces?
Yes, the AT24C04-10PC-2.7 fully supports 3.3V operation: its 2.7V–5.5V supply range includes 3.3V nominal systems, and its I²C interface meets standard-mode timing at 100 kHz with VIL/VIH thresholds compatible with 3.3V logic levels. External pull-up resistors to 3.3V are required on SDA and SCL lines.
How does the Write Protect (WP) pin function on the AT24C04-10PC-2.7?
On the AT24C04-10PC-2.7, the WP pin provides hardware-level write protection: when pulled high (to VCC), it disables all write operations-including byte, page, and erase commands-across the entire 4K-bit memory array. When grounded, normal read/write functionality resumes. This feature prevents accidental or malicious overwrites during power transitions or firmware errors.
What package type is used for the AT24C04-10PC-2.7?
The AT24C04-10PC-2.7 uses an 8-pin PDIP (Plastic Dual Inline Package), 0.300" wide, with through-hole leads. Its JEDEC MS-001 BA-compliant footprint matches legacy board layouts and facilitates manual soldering, prototyping, and socket-based testing without requiring SMT rework.
Can the AT24C04-10PC-2.7 be used in place of the AT24C02 or AT24C08?
No - the AT24C04-10PC-2.7 is not a drop-in replacement for AT24C02 (2K-bit) or AT24C08 (8K-bit) due to differences in memory size, page length (16 vs. 8 bytes), and device addressing (A2/A1 used vs. A2-only or none). While pin-compatible in PDIP-8, firmware must be updated to handle the 512-word address space and revised page boundaries to avoid data corruption.
AT24C04-10PC-2.7 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C04-10PC-2.7 FAQ
1.How can I place an order for AT24C04-10PC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C04-10PC-2.7 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-2.7 reliable?
The price and inventory of AT24C04-10PC-2.7 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-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C04-10PC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C04-10PC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C04-10PC-2.7?
AT24C04-10PC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C04-10PC-2.7 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-2.7?
For technical support, including AT24C04-10PC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C04-10PC-2.7 requirements.
6.How does Aetrix verify that AT24C04-10PC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C04-10PC-2.7 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-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C04-10PC-2.7?
All AT24C04-10PC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C04-10PC-2.7, 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-2.7 part is unused and in its original packaging.
Return procedure for AT24C04-10PC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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