My Inquiry
My Account
Microchip Technology AT24C64AN-10SI-2.7-T
- Part No.:
- AT24C64AN-10SI-2.7-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C64AN-10SI-2.7-T.pdf
- Description:
- IC EEPROM 64KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,207
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT24C64AN-10SI-2.7-T from Microchip Technology (formerly Atmel) is a 64 Kbit I²C-compatible serial EEPROM organized as 8192 × 8 bits, operating from 2.7V to 5.5V, featuring 32-byte page write mode, hardware write protection via WP pin, and 1 million write cycles endurance. It is used for nonvolatile parameter storage in embedded controllers, power management units, and sensor calibration modules.
For engineers reviewing the AT24C64AN-10SI-2.7-T datasheet, AT24C64AN-10SI-2.7-T pinout, AT24C64AN-10SI-2.7-T application, or AT24C64AN-10SI-2.7-T equivalent, key selection considerations include its 400 kHz clock rate at 1.8V, 5 ms max self-timed write cycle, industrial temperature range (−40°C to +85°C), JEDEC SOIC-8 package, and hardware write protect functionality.
Technical Context
The AT24C64AN-10SI-2.7-T implements a standard two-wire I²C interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. It supports cascading up to eight devices on a single bus using A0–A2 address pins and uses acknowledge polling to detect write completion.
Internally, memory is structured as 256 pages of 32 bytes each, enabling partial page writes and automatic address roll-over within pages. The device enters low-power standby mode (<2 µA at 2.7V) after STOP condition receipt and supports current address, random, and sequential read modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 65,536 bits (8192 × 8), sufficient for firmware configuration tables or calibration data sets in resource-constrained systems. |
| Supply Voltage Range | 2.7 V to 5.5 V - compatible with 3.3 V and 5 V logic domains without level shifting. |
| I²C Clock Rate | 400 kHz at 1.8 V - enables fast parameter updates while maintaining compatibility with legacy 100 kHz systems. |
| Write Cycle Time | 5 ms maximum - defines minimum interval between successive write commands; impacts real-time logging latency. |
| Endurance | 1 million write cycles - supports frequent recalibration or event logging over product lifetime. |
| Data Retention | 100 years at +25°C - ensures long-term validity of stored settings without refresh. |
| Standby Current | 2.0 µA at 2.7 V - minimizes battery drain in always-on or energy-harvesting applications. |
| Operating Temperature | −40°C to +85°C - qualified for industrial control, automotive body electronics, and outdoor equipment. |
Pinout & Package
AT24C64AN-10SI-2.7-T is housed in an 8-lead JEDEC SOIC (8S1) package: 0.150" wide, gull-wing leads, 1.27 mm pitch, 5.0 mm × 4.0 mm footprint, 1.75 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Hardware Device Address Inputs | Set 3-bit slave address (0x50–0x57); floating pins are internally pulled down, enabling up to 8 devices on one I²C bus. |
| SDA | Serial Data I/O | Bidirectional open-drain line requiring external pull-up; supports wire-OR with other I²C peripherals. |
| SCL | Serial Clock Input | Positive-edge sampled clock input with Schmitt trigger for robust noise rejection in electrically noisy environments. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC disables all writes, preventing accidental overwrites during power transitions. |
| VCC | Power Supply | Primary supply rail (2.7–5.5 V); powers internal logic and memory array; decoupling capacitor required near pin. |
| GND | Ground Reference | Return path for VCC and I/O signals; must be connected to system ground plane with low impedance. |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte Page Write Mode | Enables burst programming of up to 32 bytes per transaction, reducing I²C bus occupancy by >90% vs. byte-wise writes. |
| Schmitt Trigger Inputs | Provides hysteresis on SCL/SDA to suppress EMI-induced glitches, eliminating need for external RC filtering in industrial layouts. |
| Hardware Write Protection | WP pin allows deterministic, power-fail-safe locking of memory contents without software intervention or register access. |
| 100-Year Data Retention | Guarantees integrity of factory-trimmed coefficients or security keys across full product lifecycle without backup power. |
| Cascadable Architecture | Supports up to eight AT24C64AN-10SI-2.7-T devices on one I²C bus using A0–A2, simplifying multi-module BOM consolidation. |
Applications
| Industrial Sensor Calibration | Power Supply Configuration |
|---|---|
Use Scenario: Storing temperature-compensated gain/offset coefficients for analog sensor front-ends in PLC I/O modules. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during boot and periodic recalibration; no real-time timing constraints. Use Value: Eliminates need for external trimming components and enables field-updatable calibration without hardware changes. |
Use Scenario: Holding output voltage/current setpoints, protection thresholds, and startup sequences in programmable DC-DC controllers. IC Role / Device Role / Timing Role: Persistent configuration store read at power-on reset; write occurs only during maintenance mode. Use Value: Enables OEM-specific power profiles and safe recovery after brownout events without firmware reflash. |
| Consumer Audio Device Settings | Automotive Body Control Module |
Use Scenario: Saving user preferences (volume, EQ, input source) across power cycles in smart speakers and soundbars. IC Role / Device Role / Timing Role: Low-latency I²C slave responding to MCU reads/writes during UI interaction; operates at 3.3 V. Use Value: Supports rapid setting recall and silent background writes without interrupting audio playback. |
Use Scenario: Storing door lock logic states, mirror position memories, and lighting fade profiles in vehicle BCMs. IC Role / Device Role / Timing Role: Automotive-grade EEPROM interfacing with 8-bit microcontroller over I²C; −40°C to +85°C operation. Use Value: Meets AEC-Q100 stress test requirements and provides fail-safe memory for safety-critical convenience functions. |
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 and SOIC-8 package, but newer revision with enhanced ESD rating (4 kV HBM) and extended 1.7–5.5 V supply range. | Preferred for new designs targeting higher reliability in portable or handheld equipment with frequent handling. | Select AT24C64D-SSHM-T when upgrading for improved robustness; not drop-in due to different ordering suffix and minor AC timing shifts. |
| 24LC64-I/SN | Microchip's legacy 64 Kbit EEPROM in SOIC-8; identical pinout and basic functionality, but rated only to 100 kHz at 2.7 V and lacks 400 kHz support at 1.8 V. | Suitable for cost-sensitive, low-speed legacy systems where bandwidth is not critical and 1.8 V operation is unused. | Choose 24LC64-I/SN only for backward compatibility in existing 100 kHz designs; not recommended for new 400 kHz implementations. |
Compared with AT24C64AN-10SI-2.7-T, AT24C64D-SSHM-T offers broader voltage flexibility and stronger ESD immunity, while 24LC64-I/SN trades speed and low-voltage capability for lower unit cost in static configurations.
Availability
AT24C64AN-10SI-2.7-T is available at Aetrix Electronics and suitable for industrial sensor calibration, power supply configuration, and automotive body control module applications requiring stable component supply, long-term obsolescence planning, and traceable sourcing.
Supply support for AT24C64AN-10SI-2.7-T 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with global manufacturing and quality certifications including ISO 9001 and IATF 16949.
The AT24C64AN-10SI-2.7-T belongs to Microchip's AT24Cxx family of I²C serial EEPROMs, designed specifically for reliable, low-power, pin-efficient data storage in space-constrained embedded systems across industrial, automotive, and consumer markets.
FAQ
What is the maximum I²C clock frequency supported by the AT24C64AN-10SI-2.7-T?
The AT24C64AN-10SI-2.7-T supports up to 400 kHz clock frequency when operating at 1.8 V or higher. At 2.7 V, it maintains full 400 kHz capability per the AC characteristics table. This enables faster parameter updates than legacy 100 kHz EEPROMs while remaining compatible with standard I²C controllers.
Does the AT24C64AN-10SI-2.7-T require external pull-up resistors on SDA and SCL lines?
Yes, the AT24C64AN-10SI-2.7-T requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and desired rise time; Microchip recommends 4.7 kΩ for standard 100–400 kHz operation with ≤400 pF total bus load.
How does the write protect (WP) pin function on the AT24C64AN-10SI-2.7-T?
When the WP pin of the AT24C64AN-10SI-2.7-T is driven high to VCC, all write operations-including byte, page, and write-enable commands-are inhibited. When WP is grounded or left floating (internally pulled down), normal write functionality is enabled. This provides hardware-level protection against unintended memory corruption during power transitions.
What is the memory organization of the AT24C64AN-10SI-2.7-T?
The AT24C64AN-10SI-2.7-T organizes its 65,536 bits as 8192 words of 8 bits each, arranged in 256 pages of 32 bytes. This structure supports efficient partial-page writes and automatic address incrementing within pages, with wraparound occurring at page boundaries rather than across the full memory space.
Is the AT24C64AN-10SI-2.7-T qualified for automotive applications?
The AT24C64AN-10SI-2.7-T is rated for industrial temperature (−40°C to +85°C) and is not AEC-Q100 qualified. For automotive under-hood or infotainment applications requiring automotive qualification, Microchip offers the AT24C64AN-10SQ-2.7 variant, which is explicitly specified for extended temperature (−40°C to +125°C) and automotive-grade reliability.
AT24C64AN-10SI-2.7-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C64AN-10SI-2.7-T FAQ
1.How can I place an order for AT24C64AN-10SI-2.7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C64AN-10SI-2.7-T 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-10SI-2.7-T reliable?
The price and inventory of AT24C64AN-10SI-2.7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C64AN-10SI-2.7-T is usually 5 days.
3.What payment methods are accepted for AT24C64AN-10SI-2.7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C64AN-10SI-2.7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C64AN-10SI-2.7-T?
AT24C64AN-10SI-2.7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C64AN-10SI-2.7-T 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-10SI-2.7-T?
For technical support, including AT24C64AN-10SI-2.7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C64AN-10SI-2.7-T requirements.
6.How does Aetrix verify that AT24C64AN-10SI-2.7-T is sourced from the original manufacturer or authorized distributors?
All AT24C64AN-10SI-2.7-T 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-10SI-2.7-T meets industry standards.
7.What is the process for return or replacement of AT24C64AN-10SI-2.7-T?
All AT24C64AN-10SI-2.7-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C64AN-10SI-2.7-T, 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-10SI-2.7-T part is unused and in its original packaging.
Return procedure for AT24C64AN-10SI-2.7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C64AN-10SI-2.7-T Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
