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Microchip Technology AT24C64AN-10SI-1.8
- Part No.:
- AT24C64AN-10SI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C64AN-10SI-1.8.pdf
- Description:
- IC EEPROM 64KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,465
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Product details
Overview
AT24C64AN-10SI-1.8 from Microchip Technology (formerly Atmel) is a 64 Kbit (8192 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 1.8V to 5.5V, supports 400 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 retention across power cycles.
For engineers reviewing the AT24C64AN-10SI-1.8 datasheet, AT24C64AN-10SI-1.8 pinout, AT24C64AN-10SI-1.8 application, or AT24C64AN-10SI-1.8 equivalent, key selection considerations include its 1.8V minimum supply, 8-lead JEDEC SOIC (8S1) package, 32-byte page write capability, Schmitt-triggered SDA/SCL inputs for noise immunity, and hardware write protect functionality.
Technical Context
The AT24C64AN-10SI-1.8 implements a standard two-wire (I²C) interface with open-drain SDA and active-high SCL, supporting up to eight devices on a shared bus via A0–A2 address pins. Its internal architecture organizes memory as 256 pages of 32 bytes each, enabling partial-page writes and automatic address incrementing during sequential access.
It uses proprietary internal biasing on A0–A2 and WP pins to ensure predictable logic levels when left floating (pull-down if capacitive coupling <3 pF), and integrates Schmitt-triggered inputs with 100 ns noise suppression on both SDA and SCL lines-critical for robust operation in electrically noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 65,536 bits (8192 × 8), enabling storage of firmware configuration tables or sensor calibration coefficients. |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V microcontrollers without level shifting. |
| I²C Clock Rate | 400 kHz at 1.8V - enables fast parameter updates while maintaining compatibility with legacy 100 kHz designs. |
| Page Write Size | 32 bytes per page - reduces write overhead and improves efficiency over byte-write-only EEPROMs. |
| Write Endurance | 1 million cycles - suitable for applications requiring frequent field-updatable settings (e.g., energy meter tariff tables). |
| Data Retention | 100 years at +25°C - ensures long-term reliability in unattended infrastructure deployments. |
| Standby Current | 1.0 µA at 1.8V - minimizes battery drain in always-on IoT edge nodes. |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade operation in harsh ambient conditions. |
Pinout & Package
AT24C64AN-10SI-1.8 is housed in an 8-lead JEDEC SOIC package (package code 8S1), measuring 4.90 mm × 3.90 mm × 1.75 mm, with gull-wing leads and 1.27 mm pitch. This RoHS-compliant, lead-free/halogen-free package supports reflow soldering and is compatible with standard SOIC footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Device Address Inputs | Hardwired or pulled high/low to select one of eight possible I²C addresses (0x50–0x57); internally pulled down if floating and capacitive coupling <3 pF. |
| SDA | Serial Data I/O | Bidirectional open-drain line requiring external pull-up; supports wire-OR with other I²C devices on same bus. |
| SCL | Serial Clock Input | Positive-edge clock input for data-in; negative-edge sampling for data-out; Schmitt-triggered for noise immunity. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC disables all writes; tied to GND enables normal operation; internally pulled down if floating. |
| VCC | Power Supply | Primary supply rail (1.8V–5.5V); powers internal logic and memory array; decoupling capacitor required near pin. |
| GND | Ground Reference | System ground return path; must be low-impedance and co-located with VCC decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V-compatible I²C interface | Guaranteed 400 kHz operation at 1.8V supply - eliminates need for voltage translators in ultra-low-power MCU designs. |
| Hardware write protection | WP pin directly inhibits all write commands when driven high - prevents accidental corruption during firmware updates or brownout events. |
| 32-byte page write mode | Reduces average write time by >90% vs. byte-wise writes - critical for logging burst data (e.g., CAN bus diagnostics snapshots). |
| Schmitt-triggered inputs | 100 ns noise filtering on SDA/SCL - suppresses EMI-induced glitches in motor drive or power supply monitoring circuits. |
| Industrial temperature range | -40°C to +85°C operation - validated for deployment in factory automation PLCs and outdoor smart metering enclosures. |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up initialization via I²C; no timing-critical latency requirements. Use Value: Enables plug-and-play sensor replacement without manual recalibration; leverages 100-year data retention to avoid field recalibration over product lifetime. |
Use Scenario: Saving user-configured mirror/window position preferences and fault history logs in vehicle door modules. IC Role / Device Role / Timing Role: Persistent configuration storage updated infrequently but requiring guaranteed write completion before power loss. Use Value: WP pin prevents corruption during ignition cycling; 1M endurance supports 10+ years of daily use even with aggressive logging. |
| Smart Energy Meter Firmware Settings | Medical Infusion Pump Parameter Storage |
|
Use Scenario: Holding tariff schedules, billing cycle counters, and communication module credentials in ANSI C12.22-compliant meters. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage accessed during meter boot and periodic secure update windows. Use Value: Hardware write protect ensures regulatory compliance by preventing unauthorized modification of billing parameters. |
Use Scenario: Retaining drug library definitions, dose limits, and operator audit trails in Class II infusion pumps with battery backup. IC Role / Device Role / Timing Role: Fail-safe nonvolatile memory that retains critical safety data across AC power loss and battery swaps. Use Value: 1.8V operation allows direct connection to low-power MCU's I/O domain; self-timed 5 ms max write cycle ensures data integrity during brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95640-DWMN6TP | 64 Kbit SPI interface, 2.5–5.5V supply only; no 1.8V support; 20 MHz max clock; no WP pin (software-only protection). | Requires SPI-capable MCU; unsuitable for 1.8V systems or noise-prone environments lacking Schmitt triggers. | Select when existing design uses SPI bus and operates ≥2.5V; avoid if WP hardware lock or 1.8V I²C is required. |
| BR24G64FJ-WE2 | 64 Kbit I²C EEPROM, 1.7–5.5V supply, 400 kHz at 1.7V; built-in write protect register (not pin-based); 1.2 µA standby at 1.8V. | Software-configurable protection adds flexibility but requires firmware coordination; slightly higher standby current. | Prefer for new designs needing configurable protection zones; retain AT24C64AN-10SI-1.8 when hardware WP pin simplifies safety certification. |
Compared with M95640-DWMN6TP and BR24G64FJ-WE2, the AT24C64AN-10SI-1.8 uniquely combines guaranteed 1.8V I²C operation, pin-based hardware write protection, and Schmitt-triggered inputs-making it the optimal choice for cost-sensitive, noise-immune, ultra-low-voltage industrial control nodes where deterministic protection is mandatory.
Availability
AT24C64AN-10SI-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, and smart energy meter firmware settings requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT24C64AN-10SI-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 nonvolatile memory solutions, with a focus on reliability and long-term product support.
The AT24C64AN-10SI-1.8 belongs to Microchip's AT24Cxx family of I²C serial EEPROMs, designed specifically for low-power, space-constrained embedded systems requiring robust, field-updatable nonvolatile storage in industrial, automotive, and medical applications.
FAQ
What is the minimum operating voltage for AT24C64AN-10SI-1.8?
The AT24C64AN-10SI-1.8 is rated for operation down to 1.8V, with full functionality-including 400 kHz I²C communication and reliable write operations-guaranteed across the 1.8V to 5.5V supply range. This makes AT24C64AN-10SI-1.8 suitable for direct integration with 1.8V logic families without level-shifting circuitry.
Does AT24C64AN-10SI-1.8 support hardware write protection?
Yes, AT24C64AN-10SI-1.8 includes a dedicated Write Protect (WP) pin. When WP is driven high to VCC, all write operations-including byte, page, and erase-are disabled. When WP is grounded, normal write functionality is enabled. The pin is internally pulled down if left floating under low-capacitance conditions.
What package type is used for AT24C64AN-10SI-1.8?
AT24C64AN-10SI-1.8 is supplied in an 8-lead JEDEC SOIC package (package code 8S1), measuring 4.90 mm × 3.90 mm × 1.75 mm, with gull-wing leads and 1.27 mm pitch. It is lead-free, halogen-free, and qualified for industrial temperature operation (-40°C to +85°C).
How many devices can share the same I²C bus with AT24C64AN-10SI-1.8?
Up to eight AT24C64AN-10SI-1.8 devices can share a single I²C bus using the three hardware address pins A0, A1, and A2. These pins configure the device's 3-bit address segment (0x50–0x57), allowing unique addressing without software arbitration overhead. Each AT24C64AN-10SI-1.8 must have a distinct A0–A2 combination.
What is the maximum write cycle time for AT24C64AN-10SI-1.8?
The maximum self-timed write cycle time for AT24C64AN-10SI-1.8 is 5 ms, applicable to devices marked with process letter "A" (located in lower right corner of package). This value is independent of supply voltage and guarantees completion before the next valid I²C command, enabling predictable system timing in real-time applications.
AT24C64AN-10SI-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C64AN-10SI-1.8 FAQ
1.How can I place an order for AT24C64AN-10SI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C64AN-10SI-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 AT24C64AN-10SI-1.8 reliable?
The price and inventory of AT24C64AN-10SI-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 AT24C64AN-10SI-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C64AN-10SI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C64AN-10SI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C64AN-10SI-1.8?
AT24C64AN-10SI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C64AN-10SI-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 AT24C64AN-10SI-1.8?
For technical support, including AT24C64AN-10SI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C64AN-10SI-1.8 requirements.
6.How does Aetrix verify that AT24C64AN-10SI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C64AN-10SI-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 AT24C64AN-10SI-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C64AN-10SI-1.8?
All AT24C64AN-10SI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C64AN-10SI-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 AT24C64AN-10SI-1.8 part is unused and in its original packaging.
Return procedure for AT24C64AN-10SI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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