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Microchip Technology AT24C64N-10SC
- Part No.:
- AT24C64N-10SC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C64N-10SC.pdf
- Description:
- IC EEPROM 64KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,314
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Product details
Overview
AT24C64N-10SC from Microchip Technology (formerly Atmel) is a 64 Kbit (8192 × 8) I²C-compatible serial EEPROM with 2.7V to 5.5V supply operation, 10 ms max write cycle time, hardware write protection via WP pin, and 1 million write endurance. It serves as nonvolatile configuration storage in embedded controllers, power management units, and industrial sensor nodes requiring reliable data retention over 100 years.
For engineers reviewing the AT24C64N-10SC datasheet, AT24C64N-10SC pinout, AT24C64N-10SC application, or AT24C64N-10SC equivalent, key selection criteria include its 2.7V–5.5V operating range, 32-byte page write capability, Schmitt-triggered I²C inputs for noise immunity, and JEDEC SOIC-8 package compatibility with legacy board layouts.
Technical Context
The AT24C64N-10SC implements a standard two-wire I²C interface with open-drain SDA and active-high SCL, supporting 100 kHz clock frequency at 2.7V–5.5V. Its internal address counter enables current-address and sequential reads without retransmitting the address.
Device addressing uses three hardwired A0–A2 pins to support up to eight devices on one bus; the WP pin provides hardware-level protection of the upper memory quadrant (16K bits). Memory is organized into 256 pages of 32 bytes each, with automatic address rollover within pages during page writes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64 Kbit (8192 × 8), sufficient for firmware calibration tables or device configuration profiles |
| Supply Voltage Range | 2.7V to 5.5V - supports mixed-voltage systems and brown-out tolerant designs |
| Max Write Cycle Time | 10 ms - defines minimum interval between successive write commands |
| I²C Clock Frequency | 100 kHz at 2.7V - ensures timing compliance in low-power microcontroller interfaces |
| Write Endurance | 1 million cycles - guarantees long-term reliability in logging or parameter-tuning applications |
| Data Retention | 100 years at +25°C - meets archival storage requirements for industrial equipment |
| Standby Current | 0.5 µA at 2.7V - enables ultra-low-power operation in battery-backed systems |
Pinout & Package
AT24C64N-10SC is housed in an 8-pin JEDEC SOIC (SOIC-8, package code 8S1), 0.150" wide, with gull-wing leads and standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired low/high to select one of eight possible I²C addresses on shared bus |
| A1 | Device Address Input | Part of 3-bit hardware address; floating defaults to logic low per internal bias |
| A2 | Device Address Input | Enables multi-device cascading without software address remapping |
| GND | Ground Reference | Return path for VCC and all I/O signals; must be low-impedance for noise immunity |
| VCC | Power Supply | 2.7V–5.5V input; decoupling capacitor required near pin for stable I²C signaling |
| WP | Write Protect Control | Tied to VCC to lock upper 16K bits; tied to GND for full read/write access |
| SCL | Serial Clock Input | Positive-edge sampled clock; requires external pull-up; Schmitt trigger suppresses ringing |
| SDA | Serial Data I/O | Open-drain bidirectional line; shared across multiple I²C devices with single pull-up |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte page write mode | Reduces I²C transaction overhead by up to 31× vs. byte writes for contiguous data blocks |
| Schmitt-triggered SDA/SCL inputs | Rejects sub-100 ns noise spikes, eliminating need for external RC filtering in noisy environments |
| Hardware write protection (WP pin) | Prevents accidental overwrites of critical calibration or security data without firmware involvement |
| 100-year data retention | Eliminates periodic refresh routines and supports maintenance-free deployment in sealed enclosures |
| 1 million write cycles | Supports daily firmware updates for >2,700 years before wear-out - exceeds typical product lifecycle |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
Use Scenario: Storing temperature-compensated offset/gain coefficients for analog sensor front-ends in factory automation modules. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding factory-trimmed parameters accessed at power-up by MCU. Use Value: Enables plug-and-play sensor replacement without field recalibration; leverages 100-year retention for unattended operation. |
Use Scenario: Holding user-defined settings (display brightness, network ID, alarm thresholds) in medical diagnostic handhelds. IC Role / Device Role / Timing Role: Persistent parameter store updated infrequently but read at every boot and during UI interaction. Use Value: Guarantees setting persistence across battery swaps and 10+ year service life; 0.5 µA standby current extends battery runtime. |
| Power Supply Management | Consumer Electronics Firmware Storage |
Use Scenario: Recording fault logs and operational history in AC/DC power supplies with digital control loops. IC Role / Device Role / Timing Role: Event-triggered data logger writing timestamped status words after overvoltage or thermal shutdown events. Use Value: Supports root-cause analysis without external host; 1M endurance withstands frequent logging in high-failure-rate environments. |
Use Scenario: Storing audio equalizer presets and Bluetooth pairing keys in wireless headphones. IC Role / Device Role / Timing Role: Secure, low-power memory mapped to I²C peripheral of Bluetooth SoC for fast context switching. Use Value: Enables instant profile recall after power cycle; 2.7V operation matches Li-ion battery discharge curve down to 2.8V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M24C64-WMN6TP | Same 64 Kbit density, 2.5V–5.5V range, but rated for -40°C to +105°C industrial temp; 5 ms write cycle | Better suited for automotive under-hood or outdoor telecom equipment where extended temperature is mandatory | Select M24C64-WMN6TP when ambient operating temperature exceeds +85°C or AEC-Q200 qualification is required |
| CAT24C64WI-GT3 | Identical 64 Kbit, 2.7V–5.5V, SOIC-8 package; 10 ms write cycle; supports 400 kHz I²C at 5V only | Limited to 100 kHz below 5V - less suitable for high-throughput parameter loading in production test fixtures | Choose CAT24C64WI-GT3 only if sourcing continuity for existing Catapult-design boards with identical footprint and voltage constraints |
Compared with AT24C64N-10SC, M24C64-WMN6TP offers faster writes and wider temperature range but higher cost, while CAT24C64WI-GT3 matches pinout and voltage but lacks guaranteed 100 kHz performance below 5V - making AT24C64N-10SC the optimal balance of speed, reliability, and broad-voltage interoperability.
Availability
AT24C64N-10SC is available at Aetrix Electronics and suitable for industrial sensor nodes, embedded power management units, and consumer audio devices requiring stable component supply, long-term data integrity, and drop-in compatibility with legacy SOIC-8 EEPROM footprints.
Supply support for AT24C64N-10SC 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 technical and manufacturing continuity for the AT24Cxx EEPROM family, delivering high-reliability nonvolatile memory solutions since 1998.
The AT24Cxx series was designed specifically for low-power, space-constrained embedded systems needing robust, pin-compatible serial EEPROMs with hardware write protection and extended data retention - targeting industrial, medical, and consumer applications.
FAQ
What is the maximum I²C clock frequency supported by AT24C64N-10SC?
The AT24C64N-10SC supports up to 100 kHz I²C clock frequency across its full 2.7V–5.5V supply range. While some variants in the AT24C64 family support 400 kHz at 5V, the -10SC suffix denotes the 100 kHz version optimized for stable low-voltage operation - confirmed in the AT24C64 Ordering Information table on page 12 of the datasheet.
Does AT24C64N-10SC support partial page writes?
Yes, AT24C64N-10SC supports partial page writes: up to 32 bytes can be written in a single page write transaction, and fewer than 32 bytes may be sent - the internal address counter increments automatically, wrapping within the same 32-byte page boundary. This behavior is explicitly documented in the "Page Write" section on page 7 of the datasheet.
What is the function of the WP pin on AT24C64N-10SC?
The WP (Write Protect) pin on AT24C64N-10SC disables write operations to the upper quadrant (16K bits) of memory when pulled high to VCC. When grounded, full read/write access is enabled. If left unconnected, an internal pull-down ensures default write-enable behavior - a hardware-level safeguard against unintended firmware corruption.
Is AT24C64N-10SC compatible with 1.8V I²C systems?
No, AT24C64N-10SC is not compatible with 1.8V I²C systems. Its -10SC suffix indicates the 2.7V–5.5V operating range. For 1.8V operation, the correct variant is AT24C64N-10SC-1.8 (documented on page 13), which specifies 1.8V–5.5V supply and 100 kHz timing - the base AT24C64N-10SC requires minimum 2.7V on VCC.
What package type does AT24C64N-10SC use?
AT24C64N-10SC uses an 8-pin JEDEC SOIC package (package code 8S1), 0.150" wide, with gull-wing leads and 1.27 mm pitch. This is confirmed in the AT24C64 Ordering Information table (page 12) and Packaging Information diagrams (page 14), distinguishing it from PDIP, TSSOP, or 14-pin SOIC variants.
AT24C64N-10SC 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C64N-10SC FAQ
1.How can I place an order for AT24C64N-10SC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C64N-10SC 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-10SC reliable?
The price and inventory of AT24C64N-10SC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C64N-10SC is usually 5 days.
3.What payment methods are accepted for AT24C64N-10SC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C64N-10SC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C64N-10SC?
AT24C64N-10SC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C64N-10SC 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-10SC?
For technical support, including AT24C64N-10SC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C64N-10SC requirements.
6.How does Aetrix verify that AT24C64N-10SC is sourced from the original manufacturer or authorized distributors?
All AT24C64N-10SC 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-10SC meets industry standards.
7.What is the process for return or replacement of AT24C64N-10SC?
All AT24C64N-10SC units undergo pre-shipment inspection (PSI). If there is an issue with AT24C64N-10SC, 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-10SC part is unused and in its original packaging.
Return procedure for AT24C64N-10SC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C64N-10SC Tags
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