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Microchip Technology AT24C04A-10PC-2.7
- Part No.:
- AT24C04A-10PC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C04A-10PC-2.7.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,476
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Product details
Overview
AT24C04A-10PC-2.7 from Microchip Technology (formerly Atmel) is a 4K-bit (512 × 8) I²C-compatible serial EEPROM with hardware write protection, low-voltage operation (2.7V to 5.5V), and 100 kHz maximum clock frequency. It features 16-byte page write capability, 1 million write cycles endurance, and 100-year data retention - deployed in embedded systems for parameter storage, calibration data logging, and configuration backup.
For engineers reviewing the AT24C04A-10PC-2.7 datasheet, AT24C04A-10PC-2.7 pinout, AT24C04A-10PC-2.7 application, or AT24C04A-10PC-2.7 equivalent, key selection considerations include its 2.7V–5.5V supply range, 8-pin PDIP package, WP pin-based hardware write protection, and compatibility with I²C-bus timing at 100 kHz under low-voltage conditions.
Technical Context
The AT24C04A-10PC-2.7 implements a two-wire I²C interface with open-drain SDA/SCL pins, Schmitt-triggered inputs for noise immunity, and bidirectional data transfer using acknowledge polling. Its internal address space is organized as 512 words of 8 bits, requiring a 9-bit word address for random access.
Device addressing uses A2 and A1 pins (A0 is NC), enabling up to four AT24C04A devices on a single bus. The WP pin enables hardware-level protection of the upper 2K-bit memory block when pulled high, while standby current is specified at 4 µA max at 2.7V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Kbit (512 × 8), supporting nonvolatile storage of device configuration or calibration data without external power |
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration into 3.3V and 5V systems without level-shifting |
| I²C Clock Frequency | 100 kHz max - compatible with legacy microcontrollers and low-speed industrial buses |
| Page Write Size | 16 bytes - reduces write transaction overhead versus byte-write mode for bulk updates |
| Write Endurance | 1 million cycles - supports frequent field-updatable parameters in metering or sensor nodes |
| Data Retention | 100 years at +25°C - ensures long-term reliability for unattended equipment |
| Standby Current | 4 µA max at VCC = 2.7V - critical for battery-powered applications with infrequent writes |
Pinout & Package
AT24C04A-10PC-2.7 is housed in an 8-lead, 0.300" wide plastic dual in-line package (PDIP), compliant with JEDEC MS-001 BA. Pin 1 is marked with a notch or dot; leads are spaced 0.100" (2.54 mm) apart.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect (NC) | Not internally connected - must be left floating or tied to GND/VCC per design; no effect on addressing |
| A1 | Device Address Input | Hardwired input used with A2 to select one of four possible I²C slave addresses on shared bus |
| A2 | Device Address Input | Hardwired input used with A1 to configure device address; enables multi-device topology |
| GND | Ground Reference | System common return path for VCC, SDA, SCL, and WP signals |
| VCC | Power Supply | Primary DC supply input (2.7V–5.5V); powers internal logic and memory array |
| WP | Write Protect Control | Hardware-enforced lock: high = protects upper 2K-bit memory block; low = full read/write access |
| SCL | Serial Clock Input | Positive-edge sampled clock for synchronizing I²C data transfers; requires external pull-up |
| SDA | Serial Data I/O | Bidirectional open-drain data line; requires external pull-up and supports wire-OR with other I²C devices |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin disables writes to upper 2K-bit memory segment when asserted - prevents accidental firmware corruption during power-up or reset |
| Low-Voltage Operation | Functional down to 2.7V supply - eliminates need for voltage regulators in 3.3V systems and extends battery life in portable designs |
| Noise-Immune Inputs | Schmitt-triggered SCL/SDA with 100 ns noise suppression - improves robustness in electrically noisy industrial environments |
| Page Write Efficiency | 16-byte page writes reduce I²C transaction count by up to 15× vs. byte writes - accelerates configuration updates in real-time systems |
| High Reliability | 1M write cycles and 100-year data retention - validated for use in automotive ECUs, smart meters, and medical diagnostics equipment |
Applications
| Smart Energy Meters | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Storing tariff tables, meter calibration coefficients, and tamper-event logs across power cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent system state between mains outages. Use Value: 100-year retention and 1M write cycles ensure accurate billing data integrity over 20+ year field deployment. |
Use Scenario: Saving I/O mapping definitions, scaling factors, and diagnostic history in modular automation controllers. IC Role / Device Role / Timing Role: Serial configuration memory accessed via isolated I²C bus during boot and runtime reconfiguration. Use Value: WP pin enables secure factory programming of default settings while permitting field updates to user-defined parameters. |
| Medical Diagnostic Sensors | Automotive Body Control Units |
Use Scenario: Recording sensor offset corrections, usage counters, and regulatory compliance timestamps in handheld analyzers. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced to ultra-low-power MCU for infrequent but critical data writes. Use Value: 4 µA standby current at 2.7V extends battery life in portable diagnostics tools without compromising data safety. |
Use Scenario: Storing seat position presets, mirror calibration, and lighting profiles in vehicle convenience modules. IC Role / Device Role / Timing Role: I²C-configurable memory mapped to CAN gateway firmware for user preference persistence. Use Value: 2.7V–5.5V operation tolerates automotive battery transients (e.g., load dump, cranking dips) without data loss. |
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-bit capacity and 2.7V–5.5V range, but in 8-pin SOIC (8S1) and rated for -40°C to +85°C industrial temp range | Preferred for surface-mount production and extended temperature operation; lacks PDIP through-hole option | Select when board space is constrained and industrial-grade thermal performance is required |
| M24C04-RMN6TP | 4K-bit I²C EEPROM from STMicroelectronics; 1.7V–5.5V supply, 400 kHz max clock, 16-byte page write, same 8-pin TSSOP package | Higher speed and wider voltage range; pinout differs (no A0/A1/A2 address pins - fixed address only) | Choose for faster bus timing or lower minimum voltage, but verify address conflict avoidance in multi-device systems |
Compared with AT24C04A-10PC-2.7, AT24C04D-SSHM-T offers superior thermal ruggedness in compact SOIC packaging, while M24C04-RMN6TP provides higher-speed operation and broader voltage tolerance but sacrifices configurable slave addressing - impacting scalability in multi-EEPROM designs.
Availability
AT24C04A-10PC-2.7 is available at Aetrix Electronics and suitable for smart energy meters, industrial PLC I/O modules, and medical diagnostic sensors requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AT24C04A-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 is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with a focus on embedded control and connectivity.
The AT24C04A-10PC-2.7 belongs to Microchip's legacy AT24Cxx serial EEPROM product line, designed specifically for cost-sensitive, low-power embedded systems requiring reliable, byte-addressable nonvolatile storage with minimal footprint and simple I²C integration.
FAQ
What is the memory organization of the AT24C04A-10PC-2.7?
The AT24C04A-10PC-2.7 contains 4096 bits organized as 512 words of 8 bits each. It uses a 9-bit internal address counter for random access, with memory divided into 256 pages of 2 bytes each. This structure enables efficient 16-byte page writes and supports both byte and sequential read operations without external address latching.
Does the AT24C04A-10PC-2.7 support I²C standard-mode or fast-mode timing?
The AT24C04A-10PC-2.7 supports I²C standard-mode operation at up to 100 kHz under its 2.7V–5.5V supply range. It does not support fast-mode (400 kHz) at 2.7V - that speed is only guaranteed for 5.0V versions (e.g., AT24C04A-10PC). Designers must adhere to tLOW ≥ 4.7 µs and tHIGH ≥ 4.0 µs when operating AT24C04A-10PC-2.7 at 100 kHz.
How does the Write Protect (WP) pin function on the AT24C04A-10PC-2.7?
On the AT24C04A-10PC-2.7, the WP pin provides hardware-level write protection: when pulled high to VCC, it locks the upper 2K-bit memory block (addresses 0x200–0x3FF); when grounded, full read/write access is enabled. This feature prevents unintended overwrites during power transitions or firmware errors, and is independent of software commands.
What package type is used for the AT24C04A-10PC-2.7?
The AT24C04A-10PC-2.7 uses an 8-lead, 0.300" wide plastic dual in-line package (PDIP), designated as 8P3 per Microchip's ordering guide. This through-hole package supports manual prototyping and legacy wave-solder assembly, with 0.100" lead pitch and JEDEC MS-001 BA mechanical dimensions.
Is the AT24C04A-10PC-2.7 suitable for automotive applications?
The AT24C04A-10PC-2.7 is rated for commercial temperature range (0°C to +70°C) and is not qualified for automotive AEC-Q100 stress testing. For automotive body control or infotainment systems, Microchip recommends industrial-grade variants like AT24C04A-10PI-2.7 (–40°C to +85°C) or automotive-qualified alternatives such as the AT24C04C series.
AT24C04A-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
AT24C04A-10PC-2.7 FAQ
1.How can I place an order for AT24C04A-10PC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C04A-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 AT24C04A-10PC-2.7 reliable?
The price and inventory of AT24C04A-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 AT24C04A-10PC-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C04A-10PC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C04A-10PC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C04A-10PC-2.7?
AT24C04A-10PC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C04A-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 AT24C04A-10PC-2.7?
For technical support, including AT24C04A-10PC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C04A-10PC-2.7 requirements.
6.How does Aetrix verify that AT24C04A-10PC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C04A-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 AT24C04A-10PC-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C04A-10PC-2.7?
All AT24C04A-10PC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C04A-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 AT24C04A-10PC-2.7 part is unused and in its original packaging.
Return procedure for AT24C04A-10PC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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