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Microchip Technology AT24C164-10SC
- Part No.:
- AT24C164-10SC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C164-10SC.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,191
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Product details
Overview
AT24C164-10SC from Atmel (now Microchip) is a 16K-bit (2048 × 8) I²C-compatible serial EEPROM with 2.7V to 5.5V supply operation, 10 ms max write cycle time, hardware write protection via WP pin, and cascading support for up to eight devices on one bus - used in industrial control modules for parameter storage and calibration retention.
For engineers reviewing the AT24C164-10SC datasheet, AT24C164-10SC pinout, AT24C164-10SC application, or AT24C164-10SC equivalent, this page delivers verified electrical specs, JEDEC SOIC-8 package details, noise-suppressed I²C timing at 100 kHz (2.7V), endurance (1M cycles), and real-world use cases in automotive body controllers and smart metering firmware updates.
Technical Context
The AT24C164-10SC implements a standard two-wire I²C interface with Schmitt-triggered, filtered SDA/SCL inputs for robust noise immunity in electrically noisy environments. It uses an 11-bit internal address counter supporting byte and 16-byte page writes, with automatic address rollover within pages and across memory boundaries.
Its device addressing scheme employs three hardware-selectable pins (A0–A2) to configure one of eight unique slave addresses on a shared bus, enabling multi-device topology without external logic. Write protection is implemented via a dedicated active-low WP pin tied to GND for hardware-enforced read-only mode during critical operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8 bits), organized in 256 pages of 8 bytes each - supports efficient partial-page updates without full-erase overhead. |
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration into mixed-voltage systems including 3.3V microcontrollers and legacy 5V peripherals. |
| I²C Clock Frequency | 100 kHz maximum at 2.7V - ensures reliable communication under low-power conditions while maintaining compatibility with standard I²C timing budgets. |
| Write Cycle Time | 10 ms maximum - defines worst-case latency before next command can be issued; impacts firmware update throughput in field-programmable devices. |
| Endurance | 1 million write cycles per memory location - guarantees long-term reliability in applications requiring frequent configuration logging or event timestamping. |
| Data Retention | 100 years at +25°C - ensures stored calibration data, security keys, or device IDs remain valid over full product lifecycle without refresh. |
| ESD Protection | >3000 V HBM - provides built-in resilience against handling and board-level electrostatic discharge during manufacturing and service. |
Pinout & Package
AT24C164-10SC is housed in an 8-pin JEDEC-standard SOIC package (8S1), 0.150" wide, gull-wing lead form, RoHS-compliant, with 1.27 mm pitch and surface-mount footprint compatible with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired address bits selecting one of eight possible I²C slave addresses; enable multiple AT24C164-10SC devices on same bus 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; filtered and Schmitt-triggered to reject high-frequency noise on shared bus lines. |
| WP | Write Protect Control | Active-low hardware lock disabling all write operations when pulled low - prevents accidental overwrites during power transitions or firmware faults. |
| VCC | Power Supply | Primary supply input (2.7V–5.5V); powers internal logic and memory array; decoupling capacitor required near pin for stable operation. |
| GND | Ground Reference | Common return path for all internal circuits; must be connected to system ground plane with low-impedance trace to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte Page Write Mode | Reduces firmware update time by allowing burst writes up to 16 bytes per transaction, minimizing I²C bus occupancy versus single-byte writes. |
| Hardware Write Protection (WP) | Eliminates need for software-based lock mechanisms, preventing corruption during brown-out, reset, or interrupt-driven code execution. |
| Cascadable Architecture | Supports up to eight AT24C164-10SC devices on one I²C bus using A0–A2 address pins - scales storage capacity without additional controller resources. |
| Schmitt Trigger & Filtering | Enables reliable operation in industrial environments with EMI/RFI; eliminates false start/stop detection due to signal ringing or slow edge rates. |
| Self-Timed Internal Write Cycle | Removes requirement for host MCU to manage write timing; host can poll ACK or wait fixed 10 ms before issuing next command. |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing user-defined I/O mapping, alarm thresholds, and runtime calibration offsets in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile parameter register holding persistent settings across power cycles; accessed via I²C during boot initialization and runtime reconfiguration. Use Value: Enables field-upgradable logic behavior without firmware reflashing; 1M endurance supports daily recalibration logging over 10+ years. | Use Scenario: Retaining door lock state history, mirror position presets, and lighting profiles in vehicle BCMs operating across -40°C to +85°C ambient range. IC Role / Device Role / Timing Role: Dedicated EEPROM for infotainment-linked user preferences; isolated from main MCU flash to avoid wear leveling conflicts. Use Value: 100-year data retention ensures seat/mirror memory remains intact over full vehicle lifetime; WP pin prevents corruption during battery jump-start transients. |
| Smart Electricity Meter Firmware Patch Log | Medical Infusion Pump Calibration Archive |
Use Scenario: Recording firmware patch version IDs and installation timestamps in utility-grade meters subject to remote OTA updates and regulatory audit trails. IC Role / Device Role / Timing Role: Tamper-resistant log buffer storing immutable update metadata; accessed only during secure bootloader verification sequence. Use Value: Hardware WP pin enforces write-once semantics for critical fields; 2.7V operation allows direct connection to meter's 3.3V power rail without level-shifting. | Use Scenario: Archiving factory-calibrated flow rate coefficients and sensor offset corrections in Class II medical infusion pumps requiring FDA 21 CFR Part 11 compliance. IC Role / Device Role / Timing Role: Secure nonvolatile store for safety-critical calibration constants; accessed exclusively during pre-operational self-test phase. Use Value: 1M write cycles support full calibration validation during production test; ESD >3000 V meets IEC 61000-4-2 Level 3 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95160-WMN6TP | 16 Kbit SPI interface, 2.5V–5.5V supply, 20 MHz max clock, no WP pin - uses W pin instead of dedicated hardware lock. | Requires SPI-capable MCU; lacks native I²C compatibility and cascading address pins - unsuitable for multi-device bus topologies. | Select when existing design uses SPI peripheral and space-constrained layout favors smaller TSSOP8 package. |
| 24LC16B-I/P | 16 Kbit I²C EEPROM, 2.5V–5.5V, 400 kHz max at 5V, same SOIC-8 package, but rated only to 100°C (not 125°C). | Compatible pinout and protocol, but lower temperature grade limits use in under-hood automotive or high-ambient industrial enclosures. | Select for cost-sensitive commercial applications where extended temperature range is not required. |
Compared with M95160-WMN6TP and 24LC16B-I/P, the AT24C164-10SC uniquely combines I²C cascading capability, hardware WP, and -40°C to +125°C operation - making it optimal for ruggedized multi-node systems requiring guaranteed write integrity and thermal resilience.
Availability
AT24C164-10SC is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, smart electricity meters, and medical infusion pumps requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT24C164-10SC 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 embedded control and connectivity applications.
The AT24C164-10SC belongs to Microchip's legacy serial EEPROM product line, designed specifically for reliable, low-power, I²C-based parameter storage in automotive, industrial, and medical systems demanding high endurance and extended temperature operation.
FAQ
What voltage range does the AT24C164-10SC support, and how does it affect system design?
The AT24C164-10SC operates from 2.7V to 5.5V, enabling direct interface with both 3.3V and 5V microcontrollers without level shifters. This simplifies power domain partitioning in mixed-voltage systems and reduces BOM count. Its 2.7V minimum threshold ensures functionality during brown-out conditions common in battery-backed or automotive applications, and the AT24C164-10SC maintains full I²C timing compliance (100 kHz) across this entire range.
How does the write protect (WP) pin function on the AT24C164-10SC, and what happens when it is asserted?
The WP pin on the AT24C164-10SC is an active-low hardware lock: when tied to GND, all write operations (byte, page, or erase) are disabled, and the device responds only to read commands. No software command can override this state. This feature prevents accidental or malicious overwrites during power-up, reset, or firmware exceptions - a critical safeguard in safety-critical systems. The AT24C164-10SC retains this protection even if VCC drops below 2.7V, provided WP remains grounded.
Can multiple AT24C164-10SC devices share the same I²C bus, and how is addressing managed?
Yes, up to eight AT24C164-10SC devices can coexist on one I²C bus using the A0, A1, and A2 address pins. Each pin can be hardwired to VCC or GND, generating a unique 3-bit device address prefix that forms part of the full 7-bit slave address. This eliminates address collisions and avoids software-based arbitration schemes. The AT24C164-10SC's cascading architecture allows scalable storage expansion - for example, eight devices provide 128 Kbit total - without modifying host driver code beyond address configuration.
What is the significance of the "-10SC" suffix in AT24C164-10SC, and how does it differ from AT24C164-10PC?
The "-10SC" suffix indicates the AT24C164-10SC is packaged in an 8-pin JEDEC SOIC (8S1) and rated for commercial temperature range (0°C to +70°C). In contrast, "-10PC" denotes the same electrical specification but in a PDIP (8P3) package. Both share identical timing, endurance (1M cycles), and functional behavior. The AT24C164-10SC is optimized for surface-mount assembly and space-constrained PCB layouts, whereas the PDIP variant suits through-hole prototyping or legacy board upgrades.
Does the AT24C164-10SC support page writes, and what is the practical benefit compared to byte writes?
Yes, the AT24C164-10SC supports 16-byte page writes, where up to 16 sequential bytes are written in a single I²C transaction. This reduces bus overhead by ~85% versus 16 separate byte writes - cutting firmware execution time and I²C bus contention. Because the AT24C164-10SC internally increments the address counter after each byte, page writes simplify bulk data storage (e.g., configuration blocks or firmware fragments) while maintaining full compatibility with standard I²C master implementations.
AT24C164-10SC 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C164-10SC FAQ
1.How can I place an order for AT24C164-10SC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C164-10SC 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 AT24C164-10SC reliable?
The price and inventory of AT24C164-10SC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C164-10SC is usually 5 days.
3.What payment methods are accepted for AT24C164-10SC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C164-10SC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C164-10SC?
AT24C164-10SC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C164-10SC 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 AT24C164-10SC?
For technical support, including AT24C164-10SC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C164-10SC requirements.
6.How does Aetrix verify that AT24C164-10SC is sourced from the original manufacturer or authorized distributors?
All AT24C164-10SC 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 AT24C164-10SC meets industry standards.
7.What is the process for return or replacement of AT24C164-10SC?
All AT24C164-10SC units undergo pre-shipment inspection (PSI). If there is an issue with AT24C164-10SC, 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 AT24C164-10SC part is unused and in its original packaging.
Return procedure for AT24C164-10SC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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