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Microchip Technology AT24C64N-10SC-2.5
- Part No.:
- AT24C64N-10SC-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C64N-10SC-2.5.pdf
- Description:
- IC EEPROM 64KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,157
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Product details
Overview
AT24C64N-10SC-2.5 from Microchip Technology (formerly Atmel) is a 64K-bit (8192 × 8) I²C-compatible serial EEPROM with 2.5V to 5.5V supply operation, 10 ms max write cycle time, 1 million write endurance, and 100-year data retention. It serves as nonvolatile configuration storage in microcontroller-based systems requiring low-voltage compatibility and hardware write protection.
For engineers reviewing the AT24C64N-10SC-2.5 datasheet, AT24C64N-10SC-2.5 pinout, AT24C64N-10SC-2.5 application, or AT24C64N-10SC-2.5 equivalent, key selection considerations include its 2.5V minimum VCC rating, 8-pin SOIC package, WP pin-based quadrant write protection, 32-byte page write capability, and 100 kHz I²C clock support at 2.5V.
Technical Context
The AT24C64N-10SC-2.5 implements a standard two-wire I²C interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. It uses hardwired A0–A2 pins for device addressing, supporting up to eight devices on a shared bus.
Internal memory is organized into 256 pages of 32 bytes each, enabling partial-page writes and automatic address incrementing within a page boundary. Write operations are self-timed and disable all inputs until completion, requiring acknowledge polling for synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 65,536 bits (8192 × 8), sufficient for firmware parameter tables or calibration data storage |
| Supply Voltage Range | 2.5V to 5.5V - supports direct interfacing with 2.5V/3.3V logic without level shifters |
| Max Write Cycle Time | 10 ms - defines minimum interval between successive write commands |
| I²C Clock Frequency | 100 kHz at 2.5V - ensures reliable timing margin under low-VCC conditions |
| Write Endurance | 1 million cycles - enables long-term logging or frequent configuration updates |
| Data Retention | 100 years - guarantees persistent storage across product lifecycle without refresh |
| Standby Current | 0.5 µA at 2.5V - minimizes power draw in battery-backed or energy-sensitive applications |
Pinout & Package
AT24C64N-10SC-2.5 is housed in an 8-pin JEDEC SOIC (package code 8S1), 0.150" wide, surface-mount package with standard gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired address bits enabling up to eight devices on one I²C bus; float to logic low if unconnected |
| SDA | Serial Data I/O | Bidirectional open-drain line shared across multiple I²C peripherals; requires external pull-up |
| SCL | Serial Clock Input | Master-generated clock signal with Schmitt trigger input for robust noise rejection |
| WP | Write Protect Control | Hardware-enforced inhibition of writes to upper 16K bits when tied to VCC |
| GND | Ground Reference | System common return path for VCC and signal references |
| VCC | Power Supply | Primary supply input supporting 2.5V–5.5V operation; powers internal logic and memory array |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte Page Write Mode | Enables efficient multi-byte updates without repeated start/stop overhead per byte |
| Schmitt Trigger Inputs | Suppresses digital noise on SCL/SDA lines, improving reliability in electrically noisy environments |
| Hardware Write Protection | WP pin disables writes to top 16K bits, preventing accidental corruption of critical firmware data |
| Low Standby Current | 0.5 µA at 2.5V allows integration into always-on systems with minimal quiescent power impact |
| Cascadable I²C Architecture | Three address pins support up to eight AT24C64N-10SC-2.5 devices on a single 2-wire bus |
Applications
| Industrial Sensor Calibration | Consumer Remote Control Memory |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients in programmable temperature or pressure transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during power-up initialization via I²C. Use Value: Enables field-replaceable sensors with retained calibration; 100-year retention avoids recalibration over product lifetime. | Use Scenario: Preserving user-programmed channel presets and volume settings in IR remote controllers. IC Role / Device Role / Timing Role: Low-power parameter storage updated infrequently and read at wake-up. Use Value: 0.5 µA standby current extends coin-cell battery life beyond 5 years; WP pin prevents accidental overwrite during button presses. |
| Medical Device Configuration | Automotive Body Control Module |
Use Scenario: Holding patient-specific therapy parameters and usage logs in portable infusion pumps. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory accessed by MCU during boot and runtime. Use Value: Hardware WP protection isolates critical therapy data from firmware update routines; 1M endurance supports daily log entries for >2700 years. | Use Scenario: Storing seat/mirror position memory and lighting profiles in automotive BCMs. IC Role / Device Role / Timing Role: I²C-connected EEPROM storing user preferences persistently across ignition cycles. Use Value: 2.5V operation interfaces directly with 3.3V CAN/LIN subsystem MCUs; 100 kHz I²C speed meets real-time response requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C64D-SSHM-T | Same 64K-bit capacity and 2.5V–5.5V range, but in 8-pin TSSOP (8T) package; 100 kHz I²C support at 2.5V confirmed | TSSOP offers smaller footprint and better thermal performance than SOIC, suitable for space-constrained PCBs | Select when board layout requires lower profile or higher density; verify mechanical clearance and reflow profile compatibility |
| M24C64-WMN6TP | 64K-bit I²C EEPROM with 1.7V–5.5V range, 10 ms write cycle, and 8-pin SOIC package; supports 400 kHz at ≥2.5V | Wider voltage range and faster clock option enable use with 1.8V logic; identical pinout to AT24C64N-10SC-2.5 | Choose for designs needing 400 kHz I²C speed at 2.5V or backward compatibility with 1.8V systems |
Compared with AT24C64N-10SC-2.5, AT24C64D-SSHM-T provides identical electrical behavior in a smaller TSSOP package, while M24C64-WMN6TP adds 400 kHz capability at 2.5V and extends low-voltage operation to 1.7V-both retain the same 8-pin SOIC-compatible footprint and WP functionality.
Availability
AT24C64N-10SC-2.5 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, automotive body control modules, and consumer remote control memory requiring stable component supply and long-term data integrity.
Supply support for AT24C64N-10SC-2.5 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 a focus on reliability and long-term product support.
The AT24C64N-10SC-2.5 belongs to Microchip's legacy AT24Cxx serial EEPROM family, designed for cost-effective, low-power nonvolatile storage in resource-constrained embedded systems across industrial, automotive, and consumer markets.
FAQ
What is the maximum I²C clock frequency supported by AT24C64N-10SC-2.5 at 2.5V?
The AT24C64N-10SC-2.5 supports a maximum I²C clock frequency of 100 kHz when operating at 2.5V. This is specified in the AC Characteristics table under "2.7-, 2.5-volt" column for fSCL. The device does not support 400 kHz operation at 2.5V - that speed is only guaranteed at VCC ≥ 4.5V.
Does AT24C64N-10SC-2.5 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C64N-10SC-2.5 requires external pull-up resistors on both SDA and SCL lines because its SDA pin is open-drain and SCL is a Schmitt-trigger input without internal pull-ups. Typical values range from 1.8 kΩ to 10 kΩ depending on bus capacitance and desired rise time, as defined by I²C specification.
How does the WP pin function on AT24C64N-10SC-2.5?
On AT24C64N-10SC-2.5, the WP (Write Protect) pin disables write access to the upper 16K bits (addresses 0x2000–0x3FFF) when pulled high to VCC. When WP is grounded or left floating (internally pulled down), full memory access is enabled. This provides hardware-level protection against unintended writes to critical configuration data.
What is the memory organization of AT24C64N-10SC-2.5?
The AT24C64N-10SC-2.5 organizes its 64K-bit capacity as 8192 words of 8 bits each, arranged in 256 pages of 32 bytes. This structure enables efficient 32-byte page writes and supports random, sequential, and current-address read modes via the I²C interface.
Is AT24C64N-10SC-2.5 compatible with 1.8V I²C systems?
No, AT24C64N-10SC-2.5 is not rated for 1.8V operation. Its suffix "-2.5" specifies a minimum supply voltage of 2.5V (2.5V to 5.5V range). For 1.8V systems, Microchip offers the AT24C64N-10SC-1.8 variant, which is characterized down to 1.8V and supports 100 kHz I²C at that voltage.
AT24C64N-10SC-2.5 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C64N-10SC-2.5 FAQ
1.How can I place an order for AT24C64N-10SC-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C64N-10SC-2.5 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-2.5 reliable?
The price and inventory of AT24C64N-10SC-2.5 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-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C64N-10SC-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C64N-10SC-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C64N-10SC-2.5?
AT24C64N-10SC-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C64N-10SC-2.5 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-2.5?
For technical support, including AT24C64N-10SC-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C64N-10SC-2.5 requirements.
6.How does Aetrix verify that AT24C64N-10SC-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C64N-10SC-2.5 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-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C64N-10SC-2.5?
All AT24C64N-10SC-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C64N-10SC-2.5, 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-2.5 part is unused and in its original packaging.
Return procedure for AT24C64N-10SC-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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