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Microchip Technology AT24C08AY1-10YI-1.8
- Part No.:
- AT24C08AY1-10YI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
AT24C08AY1-10YI-1.8.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8MAP
- Quantity:
- Payment:
- Shipping:
Inventory:3,355
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Product details
Overview
AT24C08AY1-10YI-1.8 from Microchip Technology (formerly Atmel) is an 8K-bit (1024 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 1.8V to 5.5V, supports 100 kHz clock rate 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 industrial sensor calibration storage and automotive body control modules requiring nonvolatile parameter persistence across power cycles.
For engineers reviewing the AT24C08AY1-10YI-1.8 datasheet, AT24C08AY1-10YI-1.8 pinout, AT24C08AY1-10YI-1.8 application, or AT24C08AY1-10YI-1.8 equivalent, key selection considerations include its 1.8V minimum supply, 8-lead MAP package footprint, A2-only device addressing, 64-page × 16-byte organization, and automotive-grade temperature range (−40°C to +85°C).
Technical Context
The AT24C08AY1-10YI-1.8 implements a two-wire I²C interface with open-drain SDA/SCL pins, Schmitt-triggered inputs for noise immunity, and bi-directional data transfer protocol compliant with standard I²C timing. Its internal address counter supports current-address, random-address, and sequential read modes.
Write operations support byte and 16-byte page writes with self-timed 5 ms max write cycle; acknowledge polling enables host synchronization. Device addressing uses only the A2 pin (A0/A1 are NC), allowing up to two AT24C08A devices on one bus, with WP pin enabling full-array hardware write protection when pulled high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8 Kbit (1024 words × 8 bits), organized as 64 pages of 16 bytes - enables efficient parameter storage with page-aligned updates. |
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct interfacing with 1.8V logic and mixed-voltage systems without level shifters. |
| I²C Clock Frequency | 100 kHz at 1.8V - ensures reliable communication in ultra-low-power applications where higher speeds are not required. |
| Write Endurance | 1,000,000 cycles - suitable for frequent calibration or configuration updates in field-deployed equipment. |
| Data Retention | 100 years at +25°C - guarantees long-term integrity of stored firmware parameters or device-specific settings. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood environments without derating. |
| Write Protect Function | Hardware-enabled full-array protection when WP = VCC - prevents accidental overwrites during system boot or reset sequences. |
Pinout & Package
AT24C08AY1-10YI-1.8 is housed in an 8-lead Miniature Array Package (MAP), 4.90 mm × 3.00 mm body, non-leaded, dual-footprint compatible with SOIC/TSSOP land patterns. Pin 1 is marked by index area in bottom-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No-connect (NC) | Not bonded; must be left unconnected - eliminates external pull-up/down requirements for address configuration. |
| A1 | No-connect (NC) | Not bonded; no effect on device addressing - simplifies PCB layout and reduces BOM count. |
| A2 | Device Address Input | Hard-wired input determining 1-of-2 device address on shared I²C bus - enables dual-device topology without software arbitration. |
| GND | Ground Reference | System return path for VCC and I/O - requires low-impedance connection to minimize noise coupling into SDA/SCL lines. |
| VCC | Power Supply | 1.8V–5.5V supply input - decoupling capacitor (0.1 µF ceramic) recommended within 5 mm of pin for stable operation. |
| WP | Write Protect Control | Active-high enable for full-array write lock - tied to VCC for permanent protection or GND for normal read/write access. |
| SCL | Serial Clock Input | Positive-edge clock for data sampling; negative-edge for data output - requires external pull-up resistor (typically 2.2–10 kΩ). |
| SDA | Serial Data I/O | Open-drain bidirectional bus line - shares pull-up with other I²C devices; supports wire-OR logic for multi-master arbitration. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V Operation Support | Guaranteed functionality down to 1.8V supply - enables direct integration with ultra-low-power microcontrollers and battery-backed systems. |
| Hardware Write Protection | WP pin disables all write operations to entire 8K array when asserted - eliminates risk of firmware corruption during brown-out or ESD events. |
| 16-Byte Page Write | Allows burst programming of up to 16 bytes per write cycle - reduces I²C transaction overhead and accelerates bulk configuration updates. |
| Automotive-Grade Qualification | Qualified per AEC-Q100 Class 2 (−40°C to +105°C ambient) and extended to +85°C operating range - suitable for body electronics and infotainment subsystems. |
| Noise-Immune Inputs | Schmitt-triggered SCL/SDA with filtered inputs - rejects fast transients and improves robustness in electrically noisy automotive or industrial environments. |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
|
Use Scenario: Storing factory-calibrated offset/gain coefficients for temperature, pressure, and humidity sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-on initialization via I²C; no real-time timing constraints. Use Value: Enables field-replaceable sensor heads with retained calibration data, eliminating re-calibration labor and reducing maintenance downtime. |
Use Scenario: Persisting user-configurable settings (e.g., mirror position, seat memory, lighting profiles) in vehicle door modules. IC Role / Device Role / Timing Role: I²C slave EEPROM storing 8K of user preference data; accessed asynchronously during wake-up or button press. Use Value: Maintains personalized configurations across ignition cycles and battery disconnects without requiring backup capacitors or supercaps. |
| Medical Device Configuration | Smart Energy Meter Firmware Patch Storage |
|
Use Scenario: Holding regulatory-compliant operational limits and safety thresholds in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration store; WP pin hardwired to VCC to prevent runtime modification. Use Value: Ensures compliance with IEC 62304 safety requirements by preventing unauthorized changes to critical operational parameters. |
Use Scenario: Storing field-upgradable firmware patches and metering constants in utility-grade electricity meters. IC Role / Device Role / Timing Role: High-endurance EEPROM supporting over-the-air patch writes (≤1000/year) with CRC-verified integrity checks. Use Value: Extends product lifecycle by enabling remote firmware correction without physical meter replacement or service visits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics M24C08-RMN6TP | Same 8K-bit size, 1.7–5.5V range, 400 kHz max speed at ≥2.5V; 8-lead SOIC package only. | Lacks A2-only addressing flexibility; supports only single-device-per-bus unless externally multiplexed. | Preferred for cost-sensitive SOIC-based designs where 400 kHz speed is needed above 2.5V and board space allows larger package. |
| Renesas R1EX24008ASAS0I | 8K-bit, 1.7–5.5V, 1 MHz max clock; supports 32-byte page write; A0/A1/A2 all functional for 8-device addressing. | Higher speed and deeper addressing support - overqualified for simple dual-device topologies using AT24C08AY1-10YI-1.8. | Recommended when future scalability to >2 EEPROMs or faster write throughput is anticipated in the same footprint family. |
Compared with M24C08-RMN6TP and R1EX24008ASAS0I, AT24C08AY1-10YI-1.8 offers optimal balance of 1.8V compatibility, compact MAP packaging, and simplified dual-device addressing - making it ideal for space-constrained industrial and automotive nodes where 100 kHz I²C bandwidth suffices.
Availability
AT24C08AY1-10YI-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, medical device configuration, and smart energy meter firmware patch storage requiring stable component supply across extended product lifecycles.
Supply support for AT24C08AY1-10YI-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 components, and memory solutions, with broad industrial and automotive qualification expertise.
The AT24C08A series was designed for reliable, low-voltage serial data storage in resource-constrained embedded systems - emphasizing endurance, data retention, and interoperability across voltage domains.
FAQ
What is the maximum I²C clock frequency supported by AT24C08AY1-10YI-1.8 at 1.8V?
The AT24C08AY1-10YI-1.8 supports a maximum clock frequency of 100 kHz when operated at 1.8V. This is specified in the AC Characteristics table under "AT24C02A/04A/08A/16A 1.8V" column. Higher frequencies (up to 400 kHz) require VCC ≥ 2.5V, which is outside the guaranteed 1.8V operation window of this variant. The 100 kHz limit ensures timing margin and noise immunity in low-voltage systems.
How many AT24C08AY1-10YI-1.8 devices can share the same I²C bus?
Up to two AT24C08AY1-10YI-1.8 devices can operate on a single I²C bus. This is because the AT24C08A uses only the A2 pin for hardware device addressing (A0 and A1 are no-connect), providing two possible states (A2 = low or high). Each state corresponds to a unique 7-bit device address, enabling collision-free communication without software arbitration.
What is the function of the WP pin on AT24C08AY1-10YI-1.8, and how is it used?
The WP (Write Protect) pin on AT24C08AY1-10YI-1.8 provides hardware-level protection against unintended writes. When WP is pulled high to VCC, the entire 8K memory array is write-protected; only read operations are allowed. When WP is grounded, full read/write capability is enabled. This feature is critical for safeguarding calibration data or firmware parameters during power-up sequences or system faults.
Does AT24C08AY1-10YI-1.8 support partial page writes?
Yes, AT24C08AY1-10YI-1.8 supports partial page writes. In page write mode, the device accepts 1 to 16 bytes per transaction - the internal address pointer auto-increments after each byte, wrapping within the 16-byte page boundary. This allows flexible updates of non-aligned data blocks without requiring full-page erasure or pre-read-modify-write sequences.
What package type is used for AT24C08AY1-10YI-1.8, and what are its key mechanical features?
AT24C08AY1-10YI-1.8 uses the 8Y1 Miniature Array Package (MAP): a 4.90 mm × 3.00 mm body, non-leaded, dual-footprint package compatible with SOIC and TSSOP land patterns. Its bottom-view pinout places VCC, WP, SCL, and SDA on one side and A0–A2/GND on the opposite side, enabling compact routing and thermal performance suitable for dense PCB layouts.
AT24C08AY1-10YI-1.8 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:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 4.5 µs
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MAP (3x4.9)
AT24C08AY1-10YI-1.8 FAQ
1.How can I place an order for AT24C08AY1-10YI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08AY1-10YI-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 AT24C08AY1-10YI-1.8 reliable?
The price and inventory of AT24C08AY1-10YI-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 AT24C08AY1-10YI-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C08AY1-10YI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08AY1-10YI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08AY1-10YI-1.8?
AT24C08AY1-10YI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08AY1-10YI-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 AT24C08AY1-10YI-1.8?
For technical support, including AT24C08AY1-10YI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08AY1-10YI-1.8 requirements.
6.How does Aetrix verify that AT24C08AY1-10YI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C08AY1-10YI-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 AT24C08AY1-10YI-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C08AY1-10YI-1.8?
All AT24C08AY1-10YI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08AY1-10YI-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 AT24C08AY1-10YI-1.8 part is unused and in its original packaging.
Return procedure for AT24C08AY1-10YI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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