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Microchip Technology AT24C04A-10PI
- Part No.:
- AT24C04A-10PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C04A-10PI.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,974
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Product details
Overview
AT24C04A-10PI from Microchip Technology (formerly Atmel) is a 4-kbit I²C-compatible serial EEPROM with 512 × 8-bit organization, industrial temperature range (−40°C to +85°C), 2.7V–5.5V supply operation, and hardware write protection via WP pin. It delivers 100-year data retention, 1 million write cycles, and supports 100 kHz I²C communication at 2.7V for embedded system configuration storage in programmable logic controllers.
For engineers reviewing the AT24C04A-10PI datasheet, AT24C04A-10PI pinout, AT24C04A-10PI application, or AT24C04A-10PI equivalent, key selection criteria include industrial-grade reliability, page-write capability (16-byte pages), Schmitt-trigger inputs for noise immunity, and compatibility with microcontroller I²C peripherals requiring low-voltage operation down to 2.7V.
Technical Context
The AT24C04A-10PI implements a two-wire I²C interface with open-drain SDA/SCL pins, device addressing using A2/A1 (A0 is NC), and hardware write protection controlled by the WP pin. Its internal memory is organized as 256 pages of 2 bytes each, requiring a 9-bit word address for random access.
It operates across VCC = 2.7V–5.5V with 100 kHz max clock frequency at 2.7V, features self-timed 10 ms write cycles, and includes Schmitt-triggered, filtered inputs for robustness in electrically noisy environments. Standby current is 1.6 µA typical at 2.7V, supporting low-power battery-backed applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 kbit (512 × 8-bit), enabling storage of firmware calibration tables or device configuration parameters |
| Interface | I²C (2-wire serial), compatible with standard microcontroller I²C peripherals without additional protocol translation |
| Supply Voltage | 2.7V to 5.5V, supporting direct integration into mixed-voltage systems including 3.3V and 5V logic domains |
| Write Cycle Time | Max 10 ms, defining minimum delay between write commands and enabling predictable timing in real-time control loops |
| Data Retention | 100 years at 25°C, ensuring long-term validity of stored settings without periodic refresh |
| Endurance | 1 million write cycles, permitting frequent updates in logging or adaptive tuning applications |
| Operating Temperature | −40°C to +85°C, qualified for industrial automation, motor drives, and outdoor metering equipment |
Pinout & Package
AT24C04A-10PI is supplied in an 8-pin PDIP (Plastic Dual Inline Package), 0.300" wide, per JEDEC MS-001 BA standard. Pin 1 is marked with a notch or dot; package dimensions are 9.02 mm × 6.10 mm × 3.81 mm (L×W×H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect (NC) | Not internally connected; must be left unconnected or tied to GND/VCC - no effect on addressing |
| A1 | Device Address Input | Hardwired address bit; combines with A2 to select one of four possible device addresses on shared I²C bus |
| A2 | Device Address Input | Hardwired address bit; enables up to four AT24C04A-10PI devices on same I²C bus without address conflict |
| GND | Ground Reference | Return path for all internal circuitry and I²C pull-up resistors; requires low-impedance connection to system ground plane |
| VCC | Power Supply | Primary power input; must be decoupled with ≥0.1 µF ceramic capacitor placed within 5 mm of pin |
| WP | Write Protect Control | Hardware lock: tied to GND for read/write; tied to VCC to protect entire 4K array from accidental writes |
| SCL | Serial Clock Input | Open-drain input synchronized to master clock; requires external pull-up resistor (typically 4.7 kΩ) |
| SDA | Serial Data I/O | Bidirectional open-drain data line; shares pull-up with SCL; supports multi-master arbitration and clock stretching |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin enables full-array lockout when pulled high, eliminating software-only vulnerabilities in safety-critical firmware storage |
| 16-Byte Page Write | Reduces I²C transaction overhead by up to 87% vs. byte writes - critical for efficient parameter batch updates in sensor nodes |
| Schmitt-Trigger Inputs | Filters >100 ns noise spikes on SDA/SCL, preventing false start/stop detection in factory-floor EMI environments |
| Low-Voltage Operation | Guaranteed 100 kHz I²C timing at 2.7V allows direct interfacing with 3.3V microcontrollers without level shifters |
| Industrial Temperature Range | Validated operation from −40°C to +85°C ensures reliable boot-time configuration loading in HVAC and power supply controllers |
Applications
| Industrial PLC Configuration Storage | Smart Meter Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping, scaling factors, and alarm thresholds in programmable logic controllers deployed in manufacturing lines. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent setup data accessed during cold boot and runtime reconfiguration. Use Value: Enables field-replaceable modules to retain user-defined logic behavior without external backup power or manual reprogramming. |
Use Scenario: Recording metrology calibration coefficients and tamper-event logs in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, write-protected data vault with guaranteed 100-year retention for regulatory compliance evidence. Use Value: Meets ANSI/IEEE C12.19 requirements for secure, long-term storage of revenue-grade measurement parameters. |
| Automotive Body Control Module (BCM) | Medical Infusion Pump Settings |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock configurations in 12V automotive BCMs. IC Role / Device Role / Timing Role: Low-quiescent-current (1.6 µA standby) nonvolatile memory powered directly from vehicle battery via LDO. Use Value: Maintains user preferences through ignition cycles while drawing negligible current during sleep mode. |
Use Scenario: Storing drug library parameters, dose limits, and operator audit trails in Class II medical infusion pumps. IC Role / Device Role / Timing Role: Safety-critical configuration store with hardware write lock (WP = VCC) preventing runtime corruption during therapy delivery. Use Value: Supports IEC 62304 Class B software requirements by isolating immutable calibration data from application firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95040-DRMN6TP/K | 4-kbit SPI interface (not I²C); 2.5V–5.5V supply; 5 ms max write cycle; SO-8 package only | Requires SPI-capable MCU; incompatible with existing I²C bus topology; faster write but different protocol stack | Select only if migrating from I²C to SPI architecture and board layout supports SO-8 footprint. |
| BR24G04FJ-WE2 | 4-kbit I²C EEPROM; 1.7V–5.5V supply; 100 kHz/400 kHz modes; TSSOP-8 package; AEC-Q100 Grade 2 qualified | Automotive-qualified; lower min voltage (1.7V); same pinout but different package (TSSOP vs. PDIP); no industrial temp guarantee | Prefer for automotive ECUs needing AEC-Q100 compliance; not drop-in for AT24C04A-10PI due to package and qualification mismatch. |
Compared with M95040-DRMN6TP/K and BR24G04FJ-WE2, the AT24C04A-10PI provides guaranteed industrial temperature operation in PDIP packaging with native I²C support - making it optimal for legacy industrial control designs where bus compatibility and extended temperature stability are mandatory.
Availability
AT24C04A-10PI is available at Aetrix Electronics and suitable for industrial automation, smart metering, and automotive body electronics requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT24C04A-10PI 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 AT24CxxA EEPROM family. The company specializes in microcontrollers, analog, and memory solutions for embedded systems.
The AT24C04A-10PI belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power, nonvolatile data storage in space-constrained industrial and automotive applications where I²C simplicity and proven endurance are critical.
FAQ
What is the maximum I²C clock frequency supported by the AT24C04A-10PI?
The AT24C04A-10PI supports up to 100 kHz I²C clock frequency when operating at VCC = 2.7V–5.5V. This is specified in the AC Characteristics table under fSCL (Clock Frequency, SCL). While higher-speed variants exist in the AT24CxxA family (e.g., 400 kHz at 5V), the AT24C04A-10PI variant is characterized and guaranteed for 100 kHz across its full voltage and temperature range. This ensures deterministic timing in noise-sensitive industrial environments.
How does the Write Protect (WP) pin function on the AT24C04A-10PI?
On the AT24C04A-10PI, the WP pin provides hardware-level write protection: when tied to GND, normal read and write operations are permitted; when tied to VCC, the entire 4-kbit memory array is locked against writes. This behavior is explicitly defined in the WP Pin Status table and applies regardless of I²C command sequence. The AT24C04A-10PI uses this feature to prevent accidental overwrites during power transients or firmware bugs - a critical safeguard in safety-related systems.
What package type is used for the AT24C04A-10PI?
The AT24C04A-10PI is packaged in an 8-pin PDIP (Plastic Dual Inline Package), 0.300" wide, per JEDEC MS-001 BA standard. This is confirmed in the AT24C04A Ordering Information table, where "AT24C04A-10PI" maps to package code "8P3". The PDIP package offers through-hole mounting compatibility, ease of prototyping, and thermal performance suitable for industrial ambient conditions.
Can the AT24C04A-10PI be used in automotive applications?
The AT24C04A-10PI is rated for industrial temperature (−40°C to +85°C) and is not AEC-Q200 qualified. While it may function in some automotive cabin environments, Microchip does not certify or guarantee its use in automotive applications. For automotive-grade deployment, engineers should select alternatives like the BR24G04FJ-WE2 (AEC-Q100 Grade 2) or Microchip's automotive-qualified EEPROMs - not the AT24C04A-10PI.
What is the memory organization of the AT24C04A-10PI?
The AT24C04A-10PI contains 4096 bits organized as 512 words of 8 bits each (512 × 8). Internally, it is structured as 256 pages of 2 bytes each, requiring a 9-bit word address for random access. This organization is explicitly stated in the Memory Organization section and distinguishes it from the 2K (AT24C02A) and 8K (AT24C08A) variants in the same family. Page writes support up to 16 bytes per transaction.
AT24C04A-10PI 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C04A-10PI FAQ
1.How can I place an order for AT24C04A-10PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C04A-10PI 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-10PI reliable?
The price and inventory of AT24C04A-10PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C04A-10PI is usually 5 days.
3.What payment methods are accepted for AT24C04A-10PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C04A-10PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C04A-10PI?
AT24C04A-10PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C04A-10PI 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-10PI?
For technical support, including AT24C04A-10PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C04A-10PI requirements.
6.How does Aetrix verify that AT24C04A-10PI is sourced from the original manufacturer or authorized distributors?
All AT24C04A-10PI 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-10PI meets industry standards.
7.What is the process for return or replacement of AT24C04A-10PI?
All AT24C04A-10PI units undergo pre-shipment inspection (PSI). If there is an issue with AT24C04A-10PI, 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-10PI part is unused and in its original packaging.
Return procedure for AT24C04A-10PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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