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Microchip Technology AT24C164-10SI
- Part No.:
- AT24C164-10SI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C164-10SI.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,779
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Product details
Overview
AT24C164-10SI from Atmel (now Microchip) is an industrial-grade 16K-bit (2048 × 8) serial EEPROM with 2-wire I²C-compatible interface, 2.7V–5.5V supply range, write-protect pin, and 16-byte page write capability. It operates across –40°C to +85°C and supports up to eight devices on a shared bus via A0–A2 address inputs for embedded control, sensor calibration storage, and configuration memory in automotive ECUs and industrial PLCs.
For engineers reviewing the AT24C164-10SI datasheet, AT24C164-10SI pinout, AT24C164-10SI application, or AT24C164-10SI equivalent, key selection criteria include its 10 ms max write cycle time, 1 million endurance cycles, hardware WP pin for data integrity, and compatibility with standard I²C timing at 100 kHz (2.7V operation) - critical for low-power, noise-prone environments.
Technical Context
The AT24C164-10SI implements a true I²C-compliant 2-wire serial interface with open-drain SDA and edge-triggered SCL, supporting bidirectional data transfer and acknowledge polling during internal write cycles. Its device addressing uses three hardware-selectable pins (A0–A2), enabling cascading of up to eight units on one bus without external logic.
Internally organized as 256 pages × 8 bytes, it supports both byte and 16-byte page writes with automatic address incrementing within each page; rollover occurs at page boundary, not memory end. Memory reset recovery after protocol interruption is defined via clock-and-SDA high detection followed by start condition generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8 bits), organized in 256 pages of 8 bytes - enables compact firmware parameter storage with efficient page-level updates. |
| Supply Voltage Range | 2.7V to 5.5V - supports mixed-voltage systems and brown-out resilience in industrial power rails. |
| Interface Speed | 100 kHz max at 2.7V - ensures reliable communication under low-VCC conditions with Schmitt-triggered, noise-filtered inputs. |
| Write Cycle Time | 10 ms maximum - defines minimum interval between write commands; impacts real-time logging latency. |
| Endurance | 1 million write cycles - guarantees long-term reliability for frequently updated calibration or event logs. |
| Data Retention | 100 years at 25°C - ensures nonvolatile storage integrity over full product lifecycle without refresh. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive under-hood applications per ordering code SI. |
Pinout & Package
AT24C164-10SI is housed in an 8-pin JEDEC SOIC package (8S1), 0.150" wide, gull-wing lead form, RoHS-compliant and rated for industrial temperature operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Device Address Inputs | Hardwired or driven to VSS/VDD to select one of eight possible I²C addresses - enables multi-device bus expansion without address conflict. |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up; supports wire-OR with other I²C devices on same bus. |
| SCL | Serial Clock Input | Positive-edge clock input for data sampling; negative-edge for data output - defines strict I²C timing compliance. |
| WP | Write Protect Control | Active-low hardware lock: tied to GND for write enable, VCC for read-only mode - prevents accidental overwrites during power transients. |
| VCC | Power Supply | Primary supply rail (2.7–5.5V); powers internal logic and memory array - decoupling capacitor required per layout guidelines. |
| GND | Ground Reference | Signal and power return path; must be low-impedance connection to minimize noise coupling into SDA/SCL lines. |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte Page Write Mode | Reduces write transaction overhead by up to 16× vs. byte writes - accelerates bulk configuration updates in bootloaders or field upgrades. |
| Schmitt Trigger & Noise Filtering | Suppresses EMI-induced glitches on SDA/SCL - eliminates spurious start/stop detection in electrically noisy industrial enclosures. |
| Hardware Write Protect (WP) | Provides fail-safe, power-independent data lock - critical for preserving factory calibration or safety-critical parameters during firmware updates. |
| 100-Year Data Retention | Eliminates need for periodic refresh or backup power - simplifies design of maintenance-free remote sensors and battery-powered nodes. |
| Cascadable Architecture | Supports up to eight AT24C164-10SI devices on one I²C bus using A0–A2 - scales storage capacity without additional controllers or buses. |
Applications
| Industrial Sensor Calibration | Automotive ECU Configuration |
|---|---|
Use Scenario: Storing temperature-compensated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed at power-on reset and during field recalibration routines. Use Value: Enables traceable, field-updatable calibration without requiring external microcontroller flash space or battery-backed RAM. | Use Scenario: Holding vehicle-specific tuning maps, VIN-linked settings, and diagnostic trouble code history in engine control modules. IC Role / Device Role / Timing Role: I²C-connected persistent storage for runtime-critical parameters updated during service programming or adaptive learning. Use Value: Guarantees data integrity across ignition cycles and thermal extremes, meeting ISO 16750-4 requirements for automotive ambient operation. |
| Smart Meter Firmware Parameters | Medical Device Usage Logs |
Use Scenario: Recording tariff schedules, metering constants, and tamper-event timestamps in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, write-protected memory block accessed via isolated I²C bus from metrology MCU. Use Value: Meets ANSI C12.19 security requirements through hardware WP pin and 1M-cycle endurance for daily log updates over 10+ years. | Use Scenario: Archiving patient session counts, calibration cycles, and self-test results in portable infusion pumps and diagnostic analyzers. IC Role / Device Role / Timing Role: Fail-safe configuration and audit trail storage with guaranteed 100-year retention for regulatory compliance (IEC 62304). Use Value: Eliminates need for external backup power or complex wear-leveling firmware - reduces BOM cost and validation burden. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MICROCHIP AT24C16C-SSHM-T | Same 16K-bit density, SOIC-8, 1.7–5.5V supply, but rated only for commercial temp (0°C to 70°C); lacks industrial qualification. | Not suitable for extended temperature deployments; limited to indoor consumer or office equipment. | Select only if operating environment remains within 0°C–70°C and cost sensitivity outweighs industrial reliability needs. |
| ON SEMICONDUCTOR CAT24C16WI-GT3 | 16K-bit, SOIC-8, 1.7–5.5V, industrial temp (–40°C to +85°C), but no dedicated WP pin - write protection relies on software address locking. | Lacks hardware-level write lock; unsuitable where physical fault or firmware crash could corrupt critical data. | Prefer when system-level software control suffices and hardware WP is not mandated by safety standards. |
Compared with AT24C164-10SI, AT24C16C-SSHM-T trades industrial qualification for broader voltage flexibility, while CAT24C16WI-GT3 sacrifices hardware WP for lower unit cost - making AT24C164-10SI the optimal choice for safety-critical, thermally demanding, or tamper-resilient designs.
Availability
AT24C164-10SI is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive ECU configuration, and smart meter firmware parameter storage requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT24C164-10SI 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 components, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The AT24C164-10SI belongs to Microchip's legacy AT24Cxx serial EEPROM product line, designed specifically for robust, low-power, I²C-based configuration and calibration storage in harsh environments.
FAQ
What is the maximum clock frequency supported by AT24C164-10SI at 2.7V operation?
The AT24C164-10SI supports a maximum I²C clock frequency of 100 kHz when operated at 2.7V. This is specified in the AC Characteristics table under "2.7-, 2.5-, 1.8-volt" column for fSCL. The device maintains full timing compliance-including tLOW, tHIGH, and tSU.STA-at this rate, ensuring reliable communication in low-voltage industrial systems where noise immunity is prioritized over speed.
Does AT24C164-10SI require external pull-up resistors on SDA and SCL lines?
Yes, AT24C164-10SI 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 standard-mode operation. Proper resistor selection depends on bus capacitance and desired rise time; undersized resistors increase power consumption, while oversized ones risk violating I²C rise-time specifications.
How does the write protect (WP) pin function on AT24C164-10SI?
The WP pin on AT24C164-10SI is an active-low hardware lock: when pulled low (GND), write operations are enabled; when pulled high (VCC), all write attempts-including byte, page, and erase-are blocked. This feature operates independently of firmware state, providing fail-safe protection against corruption during power-up/down sequences or MCU resets. It is essential for safeguarding calibration data in AT24C164-10SI-based systems.
Can multiple AT24C164-10SI devices share the same I²C bus?
Yes, up to eight AT24C164-10SI devices can share a single I²C bus using the A0, A1, and A2 address input pins to configure unique 3-bit device addresses. Each combination of A0–A2 hardwiring sets a distinct base address, allowing individual addressing without bus contention. This cascading capability is explicitly confirmed in the AT24C164-10SI datasheet's Device Addressing section and Block Diagram.
What is the endurance rating and data retention specification for AT24C164-10SI?
The AT24C164-10SI is rated for 1 million write cycles per memory location and guarantees 100 years of data retention at 25°C. These values are measured and characterized per JEDEC standards and apply across the full industrial temperature range (–40°C to +85°C). The 100-year retention enables maintenance-free deployment in infrastructure equipment where field replacement is impractical - a core design objective of the AT24C164-10SI product line.
AT24C164-10SI 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C164-10SI FAQ
1.How can I place an order for AT24C164-10SI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C164-10SI 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 reliable?
The price and inventory of AT24C164-10SI 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 is usually 5 days.
3.What payment methods are accepted for AT24C164-10SI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C164-10SI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C164-10SI?
AT24C164-10SI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C164-10SI 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?
For technical support, including AT24C164-10SI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C164-10SI requirements.
6.How does Aetrix verify that AT24C164-10SI is sourced from the original manufacturer or authorized distributors?
All AT24C164-10SI 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 meets industry standards.
7.What is the process for return or replacement of AT24C164-10SI?
All AT24C164-10SI units undergo pre-shipment inspection (PSI). If there is an issue with AT24C164-10SI, 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 part is unused and in its original packaging.
Return procedure for AT24C164-10SI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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