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Microchip Technology AT24C04-10PI-1.8
- Part No.:
- AT24C04-10PI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C04-10PI-1.8.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,650
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Product details
Overview
AT24C04-10PI-1.8 from Microchip Technology (formerly Atmel) is a 4K-bit (512 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage embedded systems. It operates from 1.8V to 5.5V, supports 100 kHz I²C bus speed at 1.8V, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in battery-powered IoT sensors for nonvolatile parameter storage.
For engineers reviewing the AT24C04-10PI-1.8 datasheet, AT24C04-10PI-1.8 pinout, AT24C04-10PI-1.8 application, or AT24C04-10PI-1.8 equivalent, key selection criteria include 1.8V minimum supply compatibility, industrial temperature range (−40°C to +85°C), 16-byte page write capability, Schmitt-triggered noise-immune inputs, and JEDEC SOIC-8 packaging.
Technical Context
The AT24C04-10PI-1.8 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, using a 9-bit word address where A2 and A1 serve as hardwired device address bits (A0 is NC).
Write protection is enforced by the WP pin: tied to VCC, it locks the full 4K array; tied to GND, full read/write access is enabled. The device enters low-power standby mode after STOP condition or power-up, drawing only 3 µA typical at 1.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4096 bits (512 × 8), sufficient for storing calibration coefficients or device configuration in compact MCU systems. |
| Supply Voltage Range | 1.8V to 5.5V - enables direct integration with 1.8V logic families and mixed-voltage systems without level shifters. |
| I²C Clock Frequency | 100 kHz max at 1.8V - ensures reliable timing margin in low-power, noise-prone environments like portable medical devices. |
| Page Write Size | 16 bytes per page - reduces firmware overhead during bulk writes compared to byte-wise programming. |
| Write Endurance | 1 million cycles - supports frequent field updates in telemetry loggers or adaptive control systems. |
| Data Retention | 100 years at 25°C - guarantees long-term integrity of stored firmware patches or security keys without refresh. |
| Operating Temperature | −40°C to +85°C - qualified for industrial automation, automotive body electronics, and outdoor sensor nodes. |
Pinout & Package
AT24C04-10PI-1.8 is supplied in an 8-lead JEDEC SOIC package (8S1), measuring 4.9 mm × 3.9 mm × 1.75 mm, with standard gull-wing leads compatible with automated PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect | Not bonded internally; must be left unconnected - omission prevents accidental device addressing conflicts on shared I²C bus. |
| A1 | Device Address Input | Hardwired address bit; combined with A2, selects one of four possible AT24C04 devices on same bus. |
| A2 | Device Address Input | Hardwired address bit; determines unique 7-bit I²C slave address (1010xx0 for AT24C04 family). |
| GND | Ground Reference | Return path for all internal circuitry and I²C signaling; requires low-impedance connection to minimize noise coupling. |
| VCC | Power Supply | Primary supply input; must be decoupled with ≥0.1 µF ceramic capacitor placed within 5 mm of pin. |
| WP | Write Protect Control | Active-high hardware lock: logic high disables all write operations, protecting critical configuration data from corruption. |
| SCL | Serial Clock Input | Asynchronous clock for I²C transactions; Schmitt-trigger input rejects fast transients and ensures clean edge detection. |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC for proper I²C protocol compliance. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V Operation Support | Enables direct interfacing with modern ultra-low-power MCUs (e.g., ARM Cortex-M0+ or RISC-V cores) without voltage translation. |
| Schmitt Trigger Inputs | Provides >1.0 V hysteresis on SCL/SDA, rejecting EMI-induced glitches in electrically noisy industrial enclosures. |
| Partial Page Writes | Allows writing fewer than 16 bytes into a page without erasing prior contents - simplifies firmware update routines and reduces wear. |
| Self-timed Write Cycle | Internal 10 ms max write completion eliminates need for host polling delay; host can proceed to next task immediately after STOP. |
| Industrial Temperature Grade | Qualified across −40°C to +85°C, ensuring stable I²C timing and memory retention in uncontrolled ambient deployments. |
Applications
| Smart Metering Module | Medical Wearable Sensor |
|---|---|
Use Scenario: Storing tariff tables, meter calibration constants, and tamper-event logs in electricity/water meters deployed outdoors. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with infrequent writes and long-term data integrity requirements. Use Value: 100-year retention and 1M endurance ensure lifetime validity of billing parameters without field replacement. | Use Scenario: Holding patient-specific thresholds and sensor calibration offsets in Bluetooth-enabled ECG patches. IC Role / Device Role / Timing Role: Low-voltage persistent memory for user-configurable settings powered by coin-cell batteries. Use Value: 1.8V operation extends battery life by enabling direct connection to 1.8V LDO output, eliminating extra regulators. |
| Automotive Body Control Unit | Industrial PLC I/O Module |
Use Scenario: Saving seat/mirror position presets and lighting profiles in vehicle cabin ECUs. IC Role / Device Role / Timing Role: Robust parameter storage tolerant of automotive load-dump transients and wide thermal cycling. Use Value: Industrial-grade temperature rating and WP pin prevent inadvertent overwrites during CAN-based firmware updates. | Use Scenario: Retaining module identification, channel scaling factors, and fault history in DIN-rail mounted analog input cards. IC Role / Device Role / Timing Role: Field-serviceable configuration memory accessible via isolated I²C interface. Use Value: 16-byte page writes reduce communication time during factory calibration, improving production throughput. |
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-1.8 | Same 4K-bit capacity and 1.8V operation, but in 8-pin PDIP (8P3) package instead of SOIC. | PDIP variant suits through-hole prototyping or legacy board rework where SOIC footprint is unavailable. | Select when manual soldering or socket-based validation is required; not suitable for high-density SMT production. |
| M24C04-RMN6TP | 4K-bit I²C EEPROM from STMicroelectronics; supports 1.7–5.5V, 400 kHz at 2.5V+, but only 100 kHz at 1.8V - identical timing behavior to AT24C04-10PI-1.8. | Qualified to AEC-Q100 Grade 2 (−40°C to +105°C); broader temp range than AT24C04-10PI-1.8's industrial grade. | Choose for automotive under-hood applications requiring extended temperature margin beyond −40°C to +85°C. |
Compared with AT24C04-10PI-1.8, AT24C04-10PU-1.8 offers identical electrical specs but different mechanical fit, while M24C04-RMN6TP provides enhanced automotive qualification at equivalent 1.8V/100 kHz performance - both require no firmware changes but may need layout adaptation.
Availability
AT24C04-10PI-1.8 is available at Aetrix Electronics and suitable for smart metering, medical wearables, automotive body control units, and industrial PLC I/O modules requiring stable component supply across extended temperature ranges and low-voltage operation.
Supply support for AT24C04-10PI-1.8 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 deep expertise in embedded control and secure data storage.
The AT24C04-10PI-1.8 belongs to Microchip's legacy AT24C serial EEPROM product line, designed specifically for cost-sensitive, low-power embedded systems needing reliable nonvolatile storage with minimal board space and external components.
FAQ
What is the maximum I²C clock frequency supported by AT24C04-10PI-1.8 at 1.8V?
The AT24C04-10PI-1.8 supports up to 100 kHz I²C clock frequency when operating at 1.8V. This is specified in the AC Characteristics table under fSCL for 1.8V operation. Higher frequencies (e.g., 400 kHz) require VCC ≥ 2.5V. The 100 kHz limit ensures robust signal integrity and timing margin in ultra-low-voltage systems where rise/fall times are slower.
Does AT24C04-10PI-1.8 support partial page writes?
Yes, AT24C04-10PI-1.8 supports partial page writes: up to 16 bytes can be written in a single transaction, and fewer than 16 bytes may be sent without affecting unwritten bytes in the same page. This capability simplifies firmware logic for updating subsets of configuration data and reduces unnecessary wear on unchanged memory locations within the target page.
What is the function of the A0 pin on AT24C04-10PI-1.8?
The A0 pin on AT24C04-10PI-1.8 is a no-connect (NC) terminal - it is not bonded internally and must remain unconnected in the circuit. Unlike the AT24C01A/AT24C02, the AT24C04 uses only A2 and A1 for device addressing; A0 is reserved and unused, preventing misconfiguration when migrating from smaller-density variants.
How does the WP pin protect memory on AT24C04-10PI-1.8?
The WP pin on AT24C04-10PI-1.8 enables hardware write protection: when pulled high to VCC, it disables all write operations to the entire 4K-bit array; when grounded, full read/write access is permitted. This feature prevents accidental or malicious overwrites of critical calibration data or security keys during system boot or firmware updates.
Is AT24C04-10PI-1.8 compatible with standard I²C protocols?
Yes, AT24C04-10PI-1.8 fully complies with standard I²C protocol specifications, including START/STOP conditions, 7-bit slave addressing (1010xx0 format), ACK/NACK handshaking, and repeated START support. Its open-drain SDA/SCL pins, Schmitt-trigger inputs, and defined timing parameters (tSU.STA, tHD.STA, etc.) ensure interoperability with any I²C master - from legacy 8-bit MCUs to modern Linux-based SoCs.
AT24C04-10PI-1.8 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C04-10PI-1.8 FAQ
1.How can I place an order for AT24C04-10PI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C04-10PI-1.8 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 AT24C04-10PI-1.8 reliable?
The price and inventory of AT24C04-10PI-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C04-10PI-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C04-10PI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C04-10PI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C04-10PI-1.8?
AT24C04-10PI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C04-10PI-1.8 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 AT24C04-10PI-1.8?
For technical support, including AT24C04-10PI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C04-10PI-1.8 requirements.
6.How does Aetrix verify that AT24C04-10PI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C04-10PI-1.8 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 AT24C04-10PI-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C04-10PI-1.8?
All AT24C04-10PI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C04-10PI-1.8, 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 AT24C04-10PI-1.8 part is unused and in its original packaging.
Return procedure for AT24C04-10PI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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