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Microchip Technology AT24C04Y1-10YI-2.7
- Part No.:
- AT24C04Y1-10YI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
AT24C04Y1-10YI-2.7.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8MAP
- Quantity:
- Payment:
- Shipping:
Inventory:4,425
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Product details
Overview
AT24C04Y1-10YI-2.7 from Microchip Technology (formerly Atmel) is a 4-kbit I²C-compatible serial EEPROM organized as 512 × 8 bits, operating from 2.7V to 5.5V, featuring 16-byte page write capability, 100-year data retention, and 1 million write cycles. It is used for parameter storage in industrial controllers, sensor calibration data logging, and firmware configuration in embedded systems.
For engineers reviewing the AT24C04Y1-10YI-2.7 datasheet, AT24C04Y1-10YI-2.7 pinout, AT24C04Y1-10YI-2.7 application, or AT24C04Y1-10YI-2.7 equivalent, key selection criteria include its 2.7V–5.5V supply range, 400 kHz I²C speed at ≥2.5V, hardware write protection via WP pin, 8-lead MAP package footprint, and automotive-grade temperature rating (−40°C to +85°C).
Technical Context
The AT24C04Y1-10YI-2.7 implements a standard two-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs, supporting bi-directional data transfer and ACK polling during internal write cycles. Its memory array is partitioned into 32 pages of 16 bytes each, enabling partial page writes without rollover within the same page boundary.
Device addressing uses A2 and A1 pins (A0 is NC), allowing up to four AT24C04 devices on a single I²C bus. The WP pin provides hardware-level write protection: tied to VCC disables all writes to the full 4K array, while grounded enables normal read/write operations - a critical feature for field-upgrade-safe configuration storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 kbit (512 × 8-bit words), sufficient for storing calibration coefficients, device IDs, or boot configuration flags in space-constrained designs. |
| Supply Voltage Range | 2.7V to 5.5V - supports direct interfacing with 3.3V and 5V microcontrollers without level-shifting. |
| I²C Clock Frequency | Up to 400 kHz at VCC ≥ 2.5V - enables fast parameter updates in real-time systems without bus contention delays. |
| Write Cycle Time | Max 5 ms per byte/page - defines minimum interval between successive write commands; requires ACK polling or timeout handling in firmware. |
| Data Retention | 100 years at +25°C - ensures long-term reliability of stored settings across product lifecycles without refresh. |
| Endurance | 1 million write cycles per memory location - supports frequent recalibration or event logging in industrial monitoring applications. |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments including motor drives, HVAC controls, and factory automation nodes. |
Pinout & Package
AT24C04Y1-10YI-2.7 is housed in an 8-lead Miniature Array Package (MAP), 4.90 mm × 3.00 mm body, non-leaded, dual-footprint compatible with SOIC-8 and TSSOP-8 layouts. Pin 1 is marked by an index area in the top-left corner of the package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No-connect (NC) | Not bonded internally; must be left unconnected - omission prevents accidental bus address conflict with other AT24C04 devices. |
| A1 | Device Address Input | Hard-wired to set one bit of the 3-bit device address; enables up to four AT24C04 units on a shared I²C bus. |
| A2 | Device Address Input | Hard-wired to set second bit of device address; combined with A1, selects unique 7-bit I²C slave address (1010xx0/1). |
| GND | Ground Reference | Return path for VCC and signal logic; must be low-impedance to ensure noise immunity for I²C timing margins. |
| VCC | Power Supply | 2.7V–5.5V input; decoupling capacitor (0.1 µF ceramic) required within 5 mm to suppress switching transients. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC blocks all writes to entire 4K array; tied to GND enables full read/write access. |
| SCL | Serial Clock Input | Positive-edge sampled clock; open-drain compatible; requires external pull-up (typically 2.2–10 kΩ) to VCC. |
| SDA | Serial Data I/O | Open-drain bidirectional line; shares pull-up with SCL; supports multi-master arbitration and wired-AND bus topology. |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte Page Write Mode | Reduces firmware overhead by enabling burst writes of up to 16 bytes per command, cutting I²C transaction count by 94% vs. byte-wise writes. |
| Schmitt-trigger Inputs | Ensures robust clock and data edge detection under noisy industrial conditions, eliminating false starts/stops caused by slow-rising signals. |
| Hardware Write Protection | Prevents inadvertent overwrites during power brownouts or firmware glitches - critical for preserving factory calibration data. |
| ACK Polling Support | Allows host MCU to detect write completion without fixed delays, optimizing bus utilization and reducing worst-case latency. |
| Lead-free/Halogen-free Construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 (MSL3), simplifying PCB assembly planning. |
Applications
| Industrial Sensor Node | Smart Meter Configuration |
|---|---|
Use Scenario: Storing temperature compensation coefficients and sensor ID in battery-powered wireless environmental monitors. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with I²C interface; retains data during 10-year battery life and wake-up cycles. Use Value: Eliminates need for external backup capacitors or supercaps; 1M endurance supports daily recalibration without wear-out risk. |
Use Scenario: Holding tariff tables, meter serial number, and tamper-event logs in utility smart meters deployed outdoors. IC Role / Device Role / Timing Role: Secure, field-upgradeable parameter storage; WP pin prevents unauthorized firmware or billing data modification. Use Value: 100-year retention ensures data integrity over full meter lifetime; −40°C to +85°C rating covers desert and arctic deployments. |
| Motor Drive Parameter Set | Medical Diagnostic Device Calibration |
Use Scenario: Saving PID tuning values, current limits, and encoder offset corrections after commissioning AC inverters. IC Role / Device Role / Timing Role: Persistent memory for runtime-configurable control parameters; accessed during boot and fault recovery. Use Value: 400 kHz I²C speed allows full 512-byte parameter load in <1.3 ms; 2.7V operation interfaces directly with 3.3V drive MCU rails. |
Use Scenario: Archiving factory calibration constants for ECG amplifier gain stages and ADC offset trimming in portable diagnostics gear. IC Role / Device Role / Timing Role: Tamper-resistant calibration vault; WP pin locked during production test to prevent post-calibration corruption. Use Value: Automotive-grade qualification ensures stability under sterilization cycles and transport vibration; no data loss across 5000+ thermal cycles. |
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 capacity, 2.5V–5.5V supply, SOIC-8 package; rated for −40°C to +125°C extended temp. | Supports higher ambient temperatures (e.g., under-hood automotive ECUs); lacks MAP footprint compatibility. | Select when operating beyond +85°C or requiring SOIC-8 reflow compatibility; verify board layout change for 5.0 mm × 4.0 mm vs. 4.9 mm × 3.0 mm. |
| M24C04-RMN6TP | 4K I²C EEPROM, 1.7V–5.5V supply, TSSOP-8 package; 400 kHz max speed; 1M endurance, 40-year retention. | Broader voltage range enables single-supply designs down to 1.7V; shorter data retention than AT24C04Y1-10YI-2.7. | Choose for ultra-low-voltage systems (e.g., coin-cell IoT sensors); confirm WP functionality matches design lock requirements. |
Compared with AT24C04Y1-10YI-2.7, AT24C04D-SSHM-T offers extended temperature support but requires PCB footprint revision, while M24C04-RMN6TP enables lower-voltage operation at the cost of halved data retention - making the original optimal for industrial 3.3V/5V systems needing long-term calibration integrity.
Availability
AT24C04Y1-10YI-2.7 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter configuration storage, motor drive parameter sets, and medical diagnostic device calibration requiring stable component supply across multi-year production cycles.
Supply support for AT24C04Y1-10YI-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 reliability and long-term product support.
The AT24C04Y1-10YI-2.7 belongs to Microchip's legacy AT24C serial EEPROM family, designed specifically for robust, low-power, I²C-based configuration and calibration storage in industrial, automotive, and medical equipment.
FAQ
What is the memory organization of the AT24C04Y1-10YI-2.7?
The AT24C04Y1-10YI-2.7 contains 4096 bits organized as 512 words of 8 bits each (512 × 8). It is internally structured into 32 pages of 16 bytes each, supporting both byte-write and 16-byte page-write operations. This layout enables efficient block updates while maintaining compatibility with standard I²C EEPROM drivers. The AT24C04Y1-10YI-2.7 uses A2 and A1 for device addressing, with A0 designated as no-connect.
Does the AT24C04Y1-10YI-2.7 support 400 kHz I²C communication?
Yes, the AT24C04Y1-10YI-2.7 supports up to 400 kHz I²C clock frequency when operated at VCC ≥ 2.5V (including its specified 2.7V–5.5V range). At 1.8V operation, maximum speed drops to 100 kHz. The device includes Schmitt-triggered inputs and noise filtering to maintain timing integrity at high speeds. The AT24C04Y1-10YI-2.7 meets standard I²C protocol timing requirements for both modes.
How does the Write Protect (WP) pin function on the AT24C04Y1-10YI-2.7?
On the AT24C04Y1-10YI-2.7, the WP pin provides hardware-level write protection: when pulled high to VCC, it disables all write operations to the entire 4K memory array; when grounded, full read/write access is enabled. This feature prevents accidental or malicious overwrites during power transitions or firmware errors. The AT24C04Y1-10YI-2.7 does not support partial-array protection - WP is all-or-nothing.
What package type is used for the AT24C04Y1-10YI-2.7?
The AT24C04Y1-10YI-2.7 uses an 8-lead Miniature Array Package (MAP), measuring 4.90 mm × 3.00 mm with a 0.65 mm lead pitch. It features a dual footprint compatible with SOIC-8 and TSSOP-8 land patterns, easing migration across form factors. The package is lead-free and halogen-free, rated MSL3 per JEDEC J-STD-020. The AT24C04Y1-10YI-2.7 has no exposed pad and requires standard reflow profiles.
Is the AT24C04Y1-10YI-2.7 suitable for automotive applications?
The AT24C04Y1-10YI-2.7 is qualified for industrial temperature range (−40°C to +85°C) and carries automotive-grade reliability certifications including 1 million write cycles and 100-year data retention. While not AEC-Q100 certified, its construction and testing align with automotive subsystem requirements such as body control modules and infotainment configuration storage. For ASIL-B or higher systems, validation per ISO 26262 is required. The AT24C04Y1-10YI-2.7 is widely deployed in Tier-1 supplier designs meeting OEM robustness specs.
AT24C04Y1-10YI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MAP (3x4.9)
AT24C04Y1-10YI-2.7 FAQ
1.How can I place an order for AT24C04Y1-10YI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C04Y1-10YI-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 AT24C04Y1-10YI-2.7 reliable?
The price and inventory of AT24C04Y1-10YI-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 AT24C04Y1-10YI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C04Y1-10YI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C04Y1-10YI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C04Y1-10YI-2.7?
AT24C04Y1-10YI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C04Y1-10YI-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 AT24C04Y1-10YI-2.7?
For technical support, including AT24C04Y1-10YI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C04Y1-10YI-2.7 requirements.
6.How does Aetrix verify that AT24C04Y1-10YI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C04Y1-10YI-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 AT24C04Y1-10YI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C04Y1-10YI-2.7?
All AT24C04Y1-10YI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C04Y1-10YI-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 AT24C04Y1-10YI-2.7 part is unused and in its original packaging.
Return procedure for AT24C04Y1-10YI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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