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Microchip Technology AT24C64N-10SI-1.8
- Part No.:
- AT24C64N-10SI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C64N-10SI-1.8.pdf
- Description:
- IC EEPROM 64KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,813
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Product details
Overview
AT24C64N-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 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 - used in industrial sensor calibration storage and firmware parameter backup.
For engineers reviewing the AT24C64N-10SI-1.8 datasheet, AT24C64N-10SI-1.8 pinout, AT24C64N-10SI-1.8 application, or AT24C64N-10SI-1.8 equivalent, key selection criteria include 1.8V minimum supply compatibility, 32-byte page write capability, Schmitt-triggered noise-immune I²C interface, and JEDEC SOIC-8 packaging for space-constrained PCBs.
Technical Context
The AT24C64N-10SI-1.8 implements a standard two-wire I²C interface with open-drain SDA/SCL pins, internal address decoding via A0–A2 inputs (supporting up to eight devices on one bus), and hardware-based write protection that disables writes to the upper 16K bits when WP = VCC. Its memory is organized as 256 pages of 32 bytes each, enabling partial-page writes without erasing adjacent data.
It uses an internal low-VCC detector to prevent data corruption during brown-out conditions and incorporates Schmitt-trigger inputs with filtering to suppress noise on SDA and SCL lines. Standby current is specified at 0.1 µA (typ.) at 1.8V, making it suitable for battery-backed or energy-harvesting applications requiring ultra-low quiescent power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64 Kbit (8192 × 8 bits), directly addressable as 13-bit word addresses - enables compact firmware configuration storage without external address latches. |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V logic families and mixed-voltage systems without level shifters. |
| I²C Clock Rate | 100 kHz maximum at 1.8V - ensures reliable timing margin in low-power microcontroller designs using internal RC oscillators. |
| Page Write Capacity | 32-byte page write mode - reduces write transaction overhead by up to 32× versus byte-write, accelerating bulk parameter updates. |
| Write Endurance | 1 million write cycles per memory location - guarantees >10 years of daily reconfiguration in industrial control logging applications. |
| Data Retention | 100 years at +25°C - eliminates need for periodic refresh or backup in long-lifecycle infrastructure equipment. |
| Standby Current | 0.1 µA typical at 1.8V - extends battery life in portable medical devices and wireless sensor nodes operating in deep sleep modes. |
Pinout & Package
AT24C64N-10SI-1.8 is supplied in an 8-pin JEDEC SOIC (8S1) package: 0.150" wide body, gull-wing leads, RoHS-compliant, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired or floating to configure one of eight unique I²C slave addresses (0x50–0x57); floating defaults to '0' for single-device simplicity. |
| SDA | Serial Data I/O | Open-drain bidirectional line - requires external pull-up; supports wire-OR with other I²C peripherals on shared bus. |
| SCL | Serial Clock Input | Positive-edge sampled clock input - synchronizes all data transfers; Schmitt-trigger input rejects sub-100 ns noise spikes. |
| WP | Write Protect Control | Active-high hardware lock - ties to VCC to disable writes to upper 16K bits; tied to GND for full read/write access. |
| VCC | Power Supply | 1.8V–5.5V tolerant supply rail - powers internal logic and charge pump; no separate VDD/VSS decoupling required beyond standard 100 nF ceramic. |
| GND | Ground Reference | System common return - must be connected before VCC to avoid latch-up; shares reference with microcontroller ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 1.8V supply - eliminates need for voltage regulators in coin-cell or energy-harvesting powered systems. |
| Noise-Immune Interface | Schmitt-trigger inputs with 100 ns noise suppression - prevents spurious I²C start/stop detection in electrically noisy motor-control environments. |
| Hardware Write Protection | WP pin disables upper quadrant writes - protects critical calibration data from accidental overwrites during field firmware updates. |
| Self-Timed Write Cycle | Max 10 ms internal write time - relieves host MCU of timing-critical polling; ACK polling allows non-blocking status checking. |
| Industrial Temperature Range | -40°C to +85°C operation - qualified for deployment in outdoor metering, automotive body electronics, and factory automation controllers. |
Applications
| Smart Energy Metering | Industrial PLC Configuration |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed 100-year retention and immunity to power-loss-induced corruption. Use Value: Eliminates need for supercapacitor backup; WP pin prevents unauthorized modification of billing parameters during firmware upgrades. |
Use Scenario: Holding I/O mapping tables, PID tuning coefficients, and user-defined alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Field-updatable configuration memory accessed via microcontroller's I²C peripheral during boot or runtime. Use Value: Enables zero-downtime parameter changes without reprogramming flash; 32-byte page writes reduce update latency by >90% vs. byte-by-byte writes. |
| Medical Sensor Calibration | Automotive Body Control Module |
Use Scenario: Storing factory-trimmed offset/gain values for ECG front-end amplifiers and temperature-compensation lookup tables. IC Role / Device Role / Timing Role: High-reliability calibration data repository with 1M endurance - survives repeated recalibration during device lifetime. Use Value: Meets ISO 13485 traceability requirements; 0.1 µA standby current extends battery life in portable diagnostic tools. |
Use Scenario: Saving seat position memory, mirror fold/unfold settings, and lighting scene preferences in vehicle body control units. IC Role / Device Role / Timing Role: Persistent user preference storage accessible over automotive-grade I²C bus with brown-out protection. Use Value: Low 1.8V operation interfaces directly with 1.8V CAN transceiver logic; internal VCC detector prevents writes during ignition cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip AT24C64D-MAHM-T | Same 64Kbit capacity, 1.7V–5.5V range, TSSOP-8 package; lower max clock (100 kHz at all voltages), no WP pin. | Lacks hardware write protection; requires software-only locking - unsuitable where physical tamper resistance is mandated. | Select when board space permits TSSOP and WP functionality is unnecessary; verify I²C timing margins at 1.7V. |
| ON Semiconductor CAT24C64WI-GT3 | 64Kbit, 1.7V–5.5V, SOIC-8; supports 400 kHz at ≥2.5V but only 100 kHz at 1.8V; WP pin present. | Higher standby current (1 µA typ. at 1.8V) - reduces battery life in always-on sensor nodes by ~10×. | Choose if higher-speed operation above 1.8V is needed and 1 µA standby is acceptable; validate noise immunity in target EMI environment. |
Compared with AT24C64N-10SI-1.8, the AT24C64D-MAHM-T trades write protection for smaller footprint and wider voltage headroom, while the CAT24C64WI-GT3 offers faster I²C rates above 2.5V but sacrifices ultra-low-power performance critical for battery longevity.
Availability
AT24C64N-10SI-1.8 is available at Aetrix Electronics and suitable for smart metering, industrial PLC configuration, and medical sensor calibration requiring stable component supply across extended product lifecycles.
Supply support for AT24C64N-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 memory solutions, with a focus on reliability, longevity, and embedded system integration.
The AT24C64N-10SI-1.8 belongs to Microchip's legacy AT24Cxx serial EEPROM family, designed specifically for low-power, noise-immune, and long-retention nonvolatile storage in industrial, automotive, and medical applications.
FAQ
What is the minimum operating voltage for AT24C64N-10SI-1.8?
The AT24C64N-10SI-1.8 operates down to 1.8V, as confirmed in its ordering code suffix "-1.8" and DC characteristics table. At this voltage, it supports 100 kHz I²C communication, 0.1 µA typical standby current, and full 64 Kbit read/write functionality - making it suitable for direct connection to 1.8V FPGA I/O banks or ultra-low-power microcontrollers.
Does AT24C64N-10SI-1.8 support page write operations?
Yes, AT24C64N-10SI-1.8 supports 32-byte page write mode, allowing up to 32 bytes to be written in a single I²C transaction. This reduces bus overhead significantly compared to byte-wise writes and is essential for efficient firmware parameter updates. The internal address counter wraps within the same page boundary, preventing unintended cross-page writes.
How does the WP pin function on AT24C64N-10SI-1.8?
On AT24C64N-10SI-1.8, the WP (Write Protect) pin is active-high: when tied to VCC, it disables write access to the upper 16K bits (addresses 0x2000–0x3FFF); when grounded, full memory is writable. If left unconnected, an internal pull-down ensures default read/write access - a key safety feature for field-deployed systems requiring selective data lockdown.
What package type is used for AT24C64N-10SI-1.8?
AT24C64N-10SI-1.8 uses an 8-lead JEDEC SOIC package (designated 8S1), measuring 0.150" wide with gull-wing leads. This package is compatible with standard surface-mount assembly processes, offers superior thermal performance over PDIP, and provides mechanical robustness for industrial vibration environments - distinct from TSSOP or EIAJ variants in the same family.
Is AT24C64N-10SI-1.8 qualified for industrial temperature operation?
Yes, AT24C64N-10SI-1.8 is rated for -40°C to +85°C operation, as indicated by its "Industrial" qualification in the ordering information table. This includes full functionality of all electrical specifications - including 100 kHz I²C timing, 0.1 µA standby current, and 1 million write cycles - across the entire range, meeting EN 50155 and IEC 60068-2 environmental compliance requirements.
AT24C64N-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:
- 10ms
- 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
AT24C64N-10SI-1.8 FAQ
1.How can I place an order for AT24C64N-10SI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C64N-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 AT24C64N-10SI-1.8 reliable?
The price and inventory of AT24C64N-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 AT24C64N-10SI-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C64N-10SI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C64N-10SI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C64N-10SI-1.8?
AT24C64N-10SI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C64N-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 AT24C64N-10SI-1.8?
For technical support, including AT24C64N-10SI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C64N-10SI-1.8 requirements.
6.How does Aetrix verify that AT24C64N-10SI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C64N-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 AT24C64N-10SI-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C64N-10SI-1.8?
All AT24C64N-10SI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C64N-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 AT24C64N-10SI-1.8 part is unused and in its original packaging.
Return procedure for AT24C64N-10SI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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