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Microchip Technology AT24C164-10SI-2.5
- Part No.:
- AT24C164-10SI-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C164-10SI-2.5.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,394
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Product details
Overview
AT24C164-10SI-2.5 from Atmel (now Microchip) is a 16K-bit (2048 × 8) two-wire serial EEPROM optimized for low-voltage industrial applications. It operates from 2.5V to 5.5V, supports 100 kHz I²C bus timing, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention in an 8-pin JEDEC SOIC package.
For engineers reviewing the AT24C164-10SI-2.5 datasheet, AT24C164-10SI-2.5 pinout, AT24C164-10SI-2.5 application, or AT24C164-10SI-2.5 equivalent, key selection considerations include its 2.5V minimum supply, industrial temperature range (–40°C to +85°C), page-write capability (16-byte), Schmitt-trigger inputs for noise immunity, and cascading support for up to eight devices on one I²C bus.
Technical Context
The AT24C164-10SI-2.5 implements a standard I²C-compatible two-wire interface with open-drain SDA and edge-triggered SCL, supporting bidirectional data transfer and 7-bit device addressing with three hardware-selectable address pins (A0–A2). Its internal architecture organizes memory into 256 pages of 8 bytes each, enabling both byte and 16-byte page writes with automatic address incrementing within pages.
It features a self-timed write cycle (max 10 ms), acknowledge polling for write completion detection, and robust noise suppression via Schmitt-trigger inputs and input filtering. The WP pin provides hardware-level write protection by disabling write operations when held high, independent of software control or bus state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8 bits), organized as 256 pages × 8 bytes - enables efficient byte/page access without external address latching |
| Supply Voltage Range | 2.5V to 5.5V - supports mixed-voltage systems and battery-backed operation down to 2.5V nominal |
| I²C Bus Speed | 100 kHz max (at 2.5V/2.7V/1.8V), compatible with standard-mode I²C - ensures interoperability with legacy microcontrollers and PMICs |
| Write Endurance | 1,000,000 cycles - suitable for frequent configuration or calibration data logging in industrial controllers |
| Data Retention | 100 years at +25°C - guarantees long-term storage integrity for firmware parameters and device identity data |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems including motor drives and sensor nodes |
| ESD Protection | >3000 V HBM - enhances reliability in handling-sensitive manufacturing and field-replaceable modules |
Pinout & Package
AT24C164-10SI-2.5 is housed in an 8-pin JEDEC-standard SOIC package (8S1), 0.150" wide, with gull-wing leads and 1.27 mm pitch. Pin 1 is marked with a notch or dot; the package is RoHS-compliant and rated for surface-mount reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Device Address Inputs | Hardwired logic inputs selecting one of eight possible I²C addresses (0x50–0x57); enable multi-device bus sharing without address conflict |
| SDA | Serial Data I/O | Open-drain bidirectional line for I²C data transfer; requires external pull-up resistor and supports wire-OR with other open-drain devices |
| SCL | Serial Clock Input | Positive-edge clock input synchronizing all data transfers; must be driven by master with defined rise/fall time per I²C spec |
| WP | Write Protect Control | Active-high hardware lock: when tied to VCC, disables all write operations including page and byte writes - prevents accidental overwrites |
| VCC | Power Supply | Primary supply rail (2.5V–5.5V); powers internal logic and memory array; decoupling capacitor required near pin |
| GND | Ground Reference | System ground return path for all internal circuitry and I/O; must be low-impedance and shared with host controller ground |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte Page Write Mode | Reduces I²C transaction overhead by allowing up to 16 bytes per write cycle - cuts firmware execution time vs. sequential byte writes |
| Schmitt Trigger & Filtered Inputs | Enables reliable operation in electrically noisy environments (e.g., motor control boards) without external signal conditioning |
| Cascadable Architecture | Supports up to eight AT24C164-10SI-2.5 devices on a single I²C bus using A0–A2 address pins - simplifies BOM and layout for multi-parameter storage |
| Self-Timed Write Cycle | Eliminates need for host-controlled timing delays; internal 10 ms max write duration allows predictable firmware flow control via ACK polling |
| Industrial Temperature Rating | Validated operation from –40°C to +85°C - meets extended thermal requirements for factory automation and outdoor telemetry units |
Applications
| Industrial Sensor Calibration Storage | Embedded System Configuration Memory |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up initialization via I²C; retains values across cold starts and brownouts. Use Value: Enables plug-and-play sensor replacement with zero recalibration; leverages 100-year retention and 1M endurance for lifetime field deployment. |
Use Scenario: Holding boot-time configuration flags (e.g., COM port settings, display brightness, network MAC address) in medical diagnostic handhelds. IC Role / Device Role / Timing Role: I²C-configurable memory mapped by MCU during early boot; accessed at 100 kHz to avoid delaying system startup. Use Value: Supports field-upgradable settings without firmware reflashing; 2.5V operation aligns with low-power ARM Cortex-M3/M4 supply domains. |
| Motor Drive Parameter Backup | Smart Meter Firmware Metadata Storage |
Use Scenario: Saving runtime-tuned PID loop gains and fault history logs in HVAC inverter drives exposed to thermal cycling. IC Role / Device Role / Timing Role: Industrial-grade EEPROM interfaced to DSP via isolated I²C; withstands –40°C to +85°C ambient with no derating. Use Value: Guarantees parameter persistence after power loss during motor stall events; WP pin prevents corruption during EMI transients. |
Use Scenario: Storing firmware version, security keys, and tariff schedule timestamps in ANSI C12.19-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, tamper-resistant nonvolatile memory accessed only during meter commissioning or OTA update verification. Use Value: Meets ANSI/IEEE data integrity requirements via >3000 V HBM ESD rating and hardware write lock - critical for revenue-grade metering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M24C16-DRMN3TP/K | 16K-bit, 1.7V–5.5V supply, 400 kHz I²C, SO8 package; lower standby current (1 µA @ 1.8V) | Optimized for ultra-low-power battery IoT nodes; lacks industrial temp grade (-40°C to +85°C not guaranteed) | Select when sub-µA sleep current is critical and ambient temperature stays within commercial range. |
| BR24G16NUX-10 | 16K-bit, 1.6V–5.5V, 1 MHz I²C, 8-pin USON; built-in error correction (ECC), 400 kcycle endurance | Targets automotive infotainment and ADAS where ECC mitigates bit flips; smaller footprint but higher cost | Choose for safety-critical contexts requiring data integrity validation beyond basic EEPROM reliability. |
Compared with M24C16-DRMN3TP/K and BR24G16NUX-10, the AT24C164-10SI-2.5 offers verified industrial temperature operation and hardware write protection at lower cost, making it optimal for fixed-installation industrial equipment where long-term stability outweighs ultra-low-power or ECC requirements.
Availability
AT24C164-10SI-2.5 is available at Aetrix Electronics and suitable for industrial sensor calibration storage, embedded system configuration memory, and motor drive parameter backup requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AT24C164-10SI-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 (formerly Atmel) is a global semiconductor company specializing in microcontrollers, analog, FPGA, and memory solutions, with broad industrial and automotive qualification expertise.
The AT24C164 series was designed as a drop-in upgrade path for legacy 24Cxx EEPROMs, delivering enhanced voltage flexibility (down to 1.8V), improved noise immunity, and industrial-grade reliability for mission-critical embedded storage.
FAQ
What is the maximum I²C clock frequency supported by AT24C164-10SI-2.5?
The AT24C164-10SI-2.5 supports up to 100 kHz I²C clock frequency when operating at 2.5V, 2.7V, or 1.8V supply levels. This is specified in the AC Characteristics table under fSCL for low-voltage operation. It does not support 400 kHz at 2.5V - that speed is only guaranteed at 5.0V (4.5V–5.5V) operation. Always verify bus timing margins using tLOW, tHIGH, and tSU.STA values from the datasheet for your specific VCC and load conditions.
Does AT24C164-10SI-2.5 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C164-10SI-2.5 requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. The datasheet specifies typical values of 4.7 kΩ for 100 kHz operation with standard bus capacitance. Pull-up voltage must match the host controller's I/O voltage level, and resistor value must be adjusted based on bus length, node count, and rise time requirements per I²C specification.
How does the Write Protect (WP) pin function on AT24C164-10SI-2.5?
The WP pin on AT24C164-10SI-2.5 is an active-high hardware lock: when pulled to VCC, it disables all write operations (byte, page, and erase) regardless of I²C commands received. When grounded, normal write functionality is enabled. This provides fail-safe protection against accidental overwrites during power-up glitches or firmware errors - a critical feature for storing calibration data or security keys in AT24C164-10SI-2.5 deployments.
Can AT24C164-10SI-2.5 be used in place of AT24C164-10PI-2.5?
No - AT24C164-10SI-2.5 and AT24C164-10PI-2.5 differ in package type only: "SI" denotes 8-pin SOIC, while "PI" denotes 8-pin PDIP. Both share identical electrical specifications, industrial temperature range (–40°C to +85°C), and 2.5V–5.5V operation. Substitution is mechanically constrained: AT24C164-10SI-2.5 requires surface-mount assembly, whereas AT24C164-10PI-2.5 is through-hole. Electrical compatibility is full, but PCB layout and assembly process must match the package.
What is the page size and write cycle time for AT24C164-10SI-2.5?
The AT24C164-10SI-2.5 has a page size of 16 bytes and a maximum write cycle time of 10 ms per byte or page. During this internal write period, the device does not acknowledge I²C start conditions until completion - a behavior exploited by ACK polling. This 10 ms tWR value is guaranteed across the full industrial temperature range and 2.5V–5.5V supply, ensuring deterministic firmware timing for AT24C164-10SI-2.5 integration.
AT24C164-10SI-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:
- 16Kbit
- Memory Organization:
- 2K 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C164-10SI-2.5 FAQ
1.How can I place an order for AT24C164-10SI-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C164-10SI-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 AT24C164-10SI-2.5 reliable?
The price and inventory of AT24C164-10SI-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 AT24C164-10SI-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C164-10SI-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C164-10SI-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C164-10SI-2.5?
AT24C164-10SI-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C164-10SI-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 AT24C164-10SI-2.5?
For technical support, including AT24C164-10SI-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C164-10SI-2.5 requirements.
6.How does Aetrix verify that AT24C164-10SI-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C164-10SI-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 AT24C164-10SI-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C164-10SI-2.5?
All AT24C164-10SI-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C164-10SI-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 AT24C164-10SI-2.5 part is unused and in its original packaging.
Return procedure for AT24C164-10SI-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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