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Microchip Technology AT24C64AN-10SU-1.8
- Part No.:
- AT24C64AN-10SU-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C64AN-10SU-1.8.pdf
- Description:
- IC EEPROM 64KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,358
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Product details
Overview
AT24C64AN-10SU-1.8 from Microchip Technology (formerly Atmel) is a 64 Kbit (8192 × 8) two-wire serial EEPROM optimized for low-voltage embedded systems. It operates from 1.8 V to 5.5 V, supports 400 kHz I²C bus speed, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in industrial sensor calibration storage and power meter firmware parameter backup.
For engineers reviewing the AT24C64AN-10SU-1.8 datasheet, AT24C64AN-10SU-1.8 pinout, AT24C64AN-10SU-1.8 application, or AT24C64AN-10SU-1.8 equivalent, this page provides verified electrical specifications, JEDEC SOIC-8 package details, noise-suppressed I²C interface behavior, and validated alternative parts for design continuity and supply resilience.
Technical Context
The AT24C64AN-10SU-1.8 implements a standard two-wire (I²C-compatible) serial interface with Schmitt-triggered SDA/SCL inputs for robust noise immunity. Its internal architecture organizes memory as 256 pages of 32 bytes each, enabling partial-page writes and supporting up to eight devices on a shared bus via A0–A2 address pins.
It uses open-drain bidirectional SDA with internal pull-down biasing on floating address and WP pins when capacitive coupling to VCC is below 3 pF. Write operations are self-timed (≤5 ms), and standby current is characterized at 1.0 µA @ 1.8 V - critical for battery-powered metering and IoT edge nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64 Kbit (8192 × 8 bits), sufficient for storing full configuration sets in PLC I/O modules |
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interfacing with 1.8 V logic rails without level shifters |
| I²C Clock Frequency | Up to 400 kHz at 1.8 V - meets standard Fast-mode I²C timing for real-time parameter updates |
| Write Cycle Time | Max 5 ms - defines minimum interval between successive write commands in firmware |
| Endurance | 1 million write cycles - supports daily recalibration logging over 27 years |
| Data Retention | 100 years at +25°C - ensures long-term validity of factory-trimmed coefficients in medical devices |
| Standby Current | 1.0 µA @ 1.8 V - extends battery life in wireless sensor nodes beyond 10 years |
Pinout & Package
AT24C64AN-10SU-1.8 is packaged in an 8-lead JEDEC SOIC (8S1), 0.150" wide body, RoHS-compliant and halogen-free. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired or grounded to select one of up to eight devices on same I²C bus; internally pulled down if floating |
| SDA | Serial Data I/O | Bidirectional open-drain line; requires external pull-up; supports wire-OR with other I²C peripherals |
| SCL | Serial Clock Input | Positive-edge clock-in / negative-edge clock-out; Schmitt-triggered for noise suppression |
| WP | Write Protect Input | High = full memory write inhibition; low = normal operation; internally pulled down if floating |
| GND | Ground Reference | Return path for VCC and all signal currents; must be low-impedance for stable I²C signaling |
| VCC | Power Supply | 1.8–5.5 V input; decoupling capacitor (0.1 µF) required within 10 mm of pin for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional at 1.8 V min - eliminates need for voltage translators in ultra-low-power MCU designs |
| 32-byte Page Write Mode | Enables efficient bulk parameter updates without exceeding page boundaries or triggering roll-over |
| Schmitt Trigger Inputs | Rejects <50 ns noise spikes on SDA/SCL - improves reliability in electrically noisy industrial enclosures |
| Hardware Write Protection | WP pin disables all writes when tied to VCC - prevents accidental firmware corruption during field upgrades |
| Industrial Temp Range | –40°C to +85°C - qualified for deployment in outdoor utility meters and factory automation controllers |
Applications
| Smart Energy Metering | Industrial PLC Configuration |
|---|---|
|
Use Scenario: Storing tariff tables, calibration coefficients, 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 1M endurance under daily write cycles. Use Value: Eliminates need for battery-backed SRAM; reduces BOM cost and field failure risk from capacitor aging. |
Use Scenario: Holding I/O mapping, PID tuning parameters, and safety thresholds in modular programmable logic controllers. IC Role / Device Role / Timing Role: I²C-configurable persistent memory accessed during boot and runtime reconfiguration. Use Value: Enables field-upgradable control logic without firmware reflashing; supports hot-swap module identification. |
| Medical Sensor Calibration | IoT Edge Node State Storage |
|
Use Scenario: Recording factory-trimmed gain/offset values and patient-specific calibration offsets in portable ECG monitors. IC Role / Device Role / Timing Role: Low-power serial EEPROM interfaced directly to 1.8 V ADC/MCU subsystems. Use Value: Ensures traceable, unalterable calibration history across device lifetime - compliant with IEC 62304 requirements. |
Use Scenario: Saving last known sensor readings, network credentials, and sleep-cycle counters in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Ultra-low-quiescent-current nonvolatile storage synchronized with MCU deep-sleep wake events. Use Value: Achieves >10-year battery life using 1.0 µA standby current at 1.8 V - critical for sealed deployments. |
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-SSHM-T | Same 64 Kbit density and SOIC-8 package; supports 1 MHz I²C at 1.7–5.5 V; lower 0.5 µA standby current @ 1.8 V | Higher-speed bus support enables faster firmware updates in gateway-class devices | Select when upgrading legacy designs requiring >400 kHz throughput or tighter power budgets |
| ON Semiconductor CAT24C64WI-GT3 | 64 Kbit, SOIC-8, 1.7–5.5 V; 1 µA standby @ 1.8 V; identical 400 kHz max clock; AEC-Q100 Grade 3 qualified | Automotive-qualified variant suitable for under-hood telematics and ADAS sensor modules | Select for automotive-grade compliance where industrial temp range is insufficient |
Compared with AT24C64AN-10SU-1.8, AT24C64D-SSHM-T offers higher I²C speed and marginally lower standby current, while CAT24C64WI-GT3 adds automotive qualification - both retain pin compatibility and identical memory organization but differ in qualification scope and timing margins.
Availability
AT24C64AN-10SU-1.8 is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, medical calibration storage, and IoT edge node state retention requiring stable component supply across multi-year production cycles.
Supply support for AT24C64AN-10SU-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 acquired Atmel in 2016 and maintains full product continuity, technical documentation, and manufacturing for the AT24Cxx EEPROM family.
The AT24C64AN-10SU-1.8 belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power, I²C-based nonvolatile data storage in industrial, medical, and communications equipment.
FAQ
What is the maximum I²C clock frequency supported by AT24C64AN-10SU-1.8 at 1.8 V?
The AT24C64AN-10SU-1.8 supports up to 400 kHz I²C clock frequency when operating at 1.8 V, as specified in Table 4 of the official datasheet. This is consistent across 1.8 V, 2.5 V, 2.7 V, and 5.0 V supply conditions - no derating is required at minimum voltage.
Does AT24C64AN-10SU-1.8 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C64AN-10SU-1.8 requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and desired rise time - 4.7 kΩ is commonly used for 400 kHz operation with ≤400 pF total capacitance.
How does the WP pin function on AT24C64AN-10SU-1.8?
When the WP pin of AT24C64AN-10SU-1.8 is driven high to VCC, all write operations (byte and page) are inhibited - protecting the entire memory array from accidental modification. When WP is low or floating (internally pulled down if capacitive coupling <3 pF), normal write access is enabled. No software command is needed to activate hardware protection.
What package type is used for AT24C64AN-10SU-1.8?
AT24C64AN-10SU-1.8 uses an 8-lead JEDEC SOIC package (designated 8S1), 0.150" wide body, with lead-free and halogen-free construction. The "SU" suffix explicitly denotes this SOIC packaging per Atmel's ordering nomenclature in the datasheet's ordering information table.
Is AT24C64AN-10SU-1.8 suitable for automotive applications?
No, AT24C64AN-10SU-1.8 is rated for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. For automotive use, Microchip recommends the AT24C64C-SSHM-T or alternatives like ON Semiconductor's CAT24C64WI-GT3, which carry Grade 3 qualification and extended reliability testing for under-hood environments.
AT24C64AN-10SU-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-10SU-1.8 FAQ
1.How can I place an order for AT24C64AN-10SU-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C64AN-10SU-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-10SU-1.8 reliable?
The price and inventory of AT24C64AN-10SU-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-10SU-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C64AN-10SU-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C64AN-10SU-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C64AN-10SU-1.8?
AT24C64AN-10SU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C64AN-10SU-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-10SU-1.8?
For technical support, including AT24C64AN-10SU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C64AN-10SU-1.8 requirements.
6.How does Aetrix verify that AT24C64AN-10SU-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C64AN-10SU-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-10SU-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C64AN-10SU-1.8?
All AT24C64AN-10SU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C64AN-10SU-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-10SU-1.8 part is unused and in its original packaging.
Return procedure for AT24C64AN-10SU-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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