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Microchip Technology AT24C64-10TC-2.7
- Part No.:
- AT24C64-10TC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT24C64-10TC-2.7.pdf
- Description:
- IC EEPROM 64KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,255
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Product details
Overview
AT24C64-10TC-2.7 from Microchip Technology (formerly Atmel) is a 64 Kbit (8192 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 2.7V to 5.5V, supports 100 kHz I²C bus speed, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in industrial control panels for parameter storage and calibration data backup.
For engineers reviewing the AT24C64-10TC-2.7 datasheet, AT24C64-10TC-2.7 pinout, AT24C64-10TC-2.7 application, or AT24C64-10TC-2.7 equivalent, key selection considerations include VCC range compatibility (2.7–5.5 V), TSSOP-8 package footprint, 100 kHz I²C timing at low voltage, page-write capability (32-byte), and hardware write-protect functionality.
Technical Context
The AT24C64-10TC-2.7 implements a two-wire I²C interface with open-drain SDA/SCL pins, Schmitt-trigger inputs for noise immunity, and bidirectional data transfer using acknowledge polling. Its internal address counter supports current-address, random-address, and sequential read modes.
Memory is organized into 256 pages of 32 bytes each, enabling partial-page writes without erasing full pages. The WP pin provides hardware-level protection for the upper quadrant (16 Kbits), and the device enters standby mode automatically after STOP condition or power-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64 Kbit (8192 × 8 bits), sufficient for firmware configuration tables or sensor calibration datasets |
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct integration into 3.3 V and 5 V systems without level-shifting |
| I²C Clock Frequency | 100 kHz maximum at 2.7 V - ensures reliable communication in noise-sensitive industrial environments |
| Write Cycle Time | 10 ms max - defines minimum interval between successive write commands; impacts real-time logging latency |
| Endurance | 1 million write cycles - supports frequent recalibration or event-logging use cases over product lifetime |
| Data Retention | 100 years at +25°C - guarantees long-term integrity of stored configuration or security keys |
| Standby Current | 0.5 µA max at 2.7 V - minimizes battery drain in always-on or energy-harvesting applications |
Pinout & Package
AT24C64-10TC-2.7 is housed in an 8-pin TSSOP (Thin Shrink Small Outline Package) with 0.65 mm pitch, 3.0 mm × 4.4 mm body size, and exposed pad not connected - suitable for compact PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Enable up to eight AT24C64-10TC-2.7 devices on one I²C bus; hardwired or left floating (internally pulled low) |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up resistor; supports wire-OR with other I²C peripherals |
| SCL | Serial Clock Input | Positive-edge clock-in / negative-edge clock-out; controls all data transfers and timing windows |
| WP | Write Protect | Active-high signal: tied to VCC disables writes to upper 16 Kbits; tied to GND enables full memory access |
| GND | Ground Reference | Return path for supply and signal currents; must be low-impedance to minimize noise coupling |
| VCC | Power Supply | Primary supply input; accepts 2.7–5.5 V; decoupling capacitor (0.1 µF) required near pin |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte page write mode | Enables efficient burst writes without inter-byte delays; reduces total programming time vs. byte-by-byte writes |
| Schmitt-trigger, filtered inputs | Rejects fast transients and EMI-induced glitches on SDA/SCL, improving bus reliability in electrically noisy enclosures |
| Hardware write protection (WP) | Prevents accidental overwrites of critical firmware parameters or security credentials during field updates |
| Self-timed write cycle | Eliminates need for external timing control; microcontroller can poll ACK or wait fixed 10 ms before next operation |
| 100-year data retention | Validated under JEDEC JESD22-A117; ensures stored calibration coefficients remain intact across product lifecycle |
Applications
| Industrial Sensor Node | Smart Meter Firmware Storage |
|---|---|
Use Scenario: Stores temperature/humidity calibration offsets and sensor linearization coefficients in battery-powered wireless nodes. IC Role / Device Role: Nonvolatile configuration memory interfaced via I²C to an ultra-low-power MCU. Use Value: Enables field recalibration without firmware reflash; 0.5 µA standby current extends 10-year battery life. |
Use Scenario: Holds tariff tables, billing history, and cryptographic keys in utility-grade electricity meters operating at 3.3 V. IC Role / Device Role: Secure, tamper-resistant parameter storage with hardware write protection for regulatory compliance. Use Value: WP pin prevents unauthorized modification of billing logic; 1M endurance supports daily metering logs for >27 years. |
| Medical Diagnostic Device | Automotive Body Control Module |
Use Scenario: Saves user-defined test protocols and calibration history in portable ultrasound equipment with cold-start requirements. IC Role / Device Role: Low-voltage (2.7 V) EEPROM ensuring reliable boot-time parameter loading after power interruption. Use Value: 100 kHz I²C timing at 2.7 V guarantees deterministic initialization within safety-critical boot window. |
Use Scenario: Stores seat position presets, mirror angles, and lighting profiles in 12 V automotive systems with local 3.3 V LDO rail. IC Role / Device Role: Cascadable I²C memory supporting multiple ECUs sharing same bus; A0–A2 pins enable unique addressing. Use Value: 8-device addressing allows centralized configuration storage across door modules, HVAC, and lighting controllers. |
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 64 Kbit capacity, 2.5–5.5 V operation, SOIC-8 package; no -2.7 suffix - rated down to 2.5 V only | Requires ≥2.5 V supply; lacks explicit 2.7 V min guarantee; unsuitable for marginal 2.7 V brownout conditions | Select when board uses SOIC-8 footprint and system VCC never drops below 2.5 V |
| BR24G64FJ-3GE2 | Rohm 64 Kbit EEPROM; 1.7–5.5 V range; supports 400 kHz at 2.7 V+; TSSOP-8 pinout identical to AT24C64-10TC-2.7 | Higher speed at low voltage; different ACK polling behavior; slightly lower standby current (0.1 µA @ 1.8 V) | Choose for faster I²C throughput in 2.7–3.3 V systems where timing margins are tight |
Compared with AT24C64D-SSHM-T, AT24C64-10TC-2.7 guarantees stable operation down to 2.7 V and matches TSSOP-8 layout; versus BR24G64FJ-3GE2, it offers broader legacy design support and documented 100 kHz timing at 2.7 V, though at lower max speed.
Availability
AT24C64-10TC-2.7 is available at Aetrix Electronics and suitable for industrial automation, smart metering, and medical diagnostics requiring stable component supply, long-term obsolescence management, and consistent TSSOP-8 packaging.
Supply support for AT24C64-10TC-2.7 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.
The AT24C64-10TC-2.7 belongs to Microchip's serial EEPROM product line, designed specifically for robust, low-power nonvolatile storage in space-constrained embedded systems with I²C interfaces.
FAQ
What is the guaranteed minimum supply voltage for AT24C64-10TC-2.7?
The AT24C64-10TC-2.7 is specified for operation from 2.7 V to 5.5 V. This means it will reliably perform all read/write functions-including 100 kHz I²C communication and page writes-down to exactly 2.7 V, as confirmed in the "-2.7" option designation and DC Characteristics table of the official datasheet.
Does AT24C64-10TC-2.7 support standard I²C addressing with multiple devices on one bus?
Yes. AT24C64-10TC-2.7 uses three hardware address pins (A0–A2) to support up to eight devices on a shared I²C bus. Each device responds only to its unique 7-bit address (1010xxx), where xxx is determined by A0–A2 logic levels - enabling scalable memory expansion without additional buses.
How does the WP pin function on AT24C64-10TC-2.7?
On AT24C64-10TC-2.7, the WP (Write Protect) pin is active-high: when tied to VCC, it inhibits writes to the upper 16 Kbits (addresses 0x2000–0x3FFF); when grounded or floating (internally pulled low), full memory access is enabled. This provides hardware-level security for critical configuration blocks.
What is the maximum write speed and timing constraint for AT24C64-10TC-2.7?
The AT24C64-10TC-2.7 has a maximum write cycle time of 10 ms per byte or page. While it supports 100 kHz I²C clocking, the internal clear-and-write operation is self-timed and blocks further I²C commands until complete - requiring either ACK polling or a fixed 10 ms delay before issuing subsequent writes.
Is AT24C64-10TC-2.7 compatible with 1.8 V I²C systems?
No. AT24C64-10TC-2.7 is rated for 2.7 V to 5.5 V operation. For 1.8 V systems, Microchip offers the AT24C64-10TC-1.8 variant, which guarantees functionality down to 1.8 V and includes adjusted timing (100 kHz max) and lower standby current (0.1 µA). Using AT24C64-10TC-2.7 below 2.7 V risks functional failure or data corruption.
AT24C64-10TC-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT24C64-10TC-2.7 FAQ
1.How can I place an order for AT24C64-10TC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C64-10TC-2.7 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 AT24C64-10TC-2.7 reliable?
The price and inventory of AT24C64-10TC-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C64-10TC-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C64-10TC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C64-10TC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C64-10TC-2.7?
AT24C64-10TC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C64-10TC-2.7 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 AT24C64-10TC-2.7?
For technical support, including AT24C64-10TC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C64-10TC-2.7 requirements.
6.How does Aetrix verify that AT24C64-10TC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C64-10TC-2.7 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 AT24C64-10TC-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C64-10TC-2.7?
All AT24C64-10TC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C64-10TC-2.7, 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 AT24C64-10TC-2.7 part is unused and in its original packaging.
Return procedure for AT24C64-10TC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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