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Microchip Technology AT24C164-10PI
- Part No.:
- AT24C164-10PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C164-10PI.pdf
- Description:
- IC EEPROM 16KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,824
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Product details
Overview
AT24C164-10PI from Atmel (now Microchip) is an industrial-grade 16K-bit (2048 × 8) two-wire serial EEPROM with 2.7V–5.5V supply operation, 10 ms max write cycle time, and hardware write protection via WP pin. It supports cascading up to eight devices on a shared I²C bus and is used in embedded systems for parameter storage, calibration data retention, and configuration backup in automotive control units and industrial PLCs.
For engineers reviewing the AT24C164-10PI datasheet, AT24C164-10PI pinout, AT24C164-10PI application, or AT24C164-10PI equivalent, key selection criteria include industrial temperature range (−40°C to +85°C), 100 kHz I²C speed at 2.7V, 16-byte page write capability, and PDIP/SOIC package compatibility with legacy board layouts.
Technical Context
The AT24C164-10PI implements a standard I²C-compatible 2-wire interface with open-drain SDA and edge-triggered SCL, supporting both byte and 16-byte page writes. Its internal address counter enables sequential reads across memory boundaries, while Schmitt-trigger inputs and noise filtering ensure robust operation in electrically noisy environments.
Device addressing uses three hardware-selectable pins (A0–A2) to support up to eight devices on one bus, and the WP pin provides hardware-level write inhibition independent of software control - critical for preventing accidental overwrites during power transitions or firmware updates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8 bits), organized in 256 pages of 8 bytes each - enables efficient block-level data management |
| Supply Voltage Range | 2.7V to 5.5V - supports mixed-voltage systems and brown-out tolerant operation down to 2.7V |
| I²C Clock Frequency | 100 kHz max at 2.7V - ensures timing compliance in low-voltage industrial designs |
| Write Cycle Time | 10 ms maximum - defines minimum interval between write commands; impacts firmware polling strategy |
| Data Retention | 100 years at +25°C - guarantees long-term reliability for infrequently updated configuration data |
| Endurance | 1 million write cycles per memory location - supports frequent recalibration or logging use cases |
| Operating Temperature | −40°C to +85°C - qualified for industrial control, motor drives, and under-hood automotive modules |
Pinout & Package
AT24C164-10PI is supplied in an 8-pin JEDEC SOIC (8S1) package with 0.150" body width and gull-wing leads - compatible with standard surface-mount reflow profiles and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired select lines enabling up to eight AT24C164-10PI devices on one I²C bus without address conflict |
| SDA | Serial Data I/O | Open-drain bidirectional line for I²C data transfer; requires external pull-up resistor |
| SCL | Serial Clock Input | Positive-edge clock input synchronizing all data transfers; must be driven by master device |
| WP | Write Protect Control | Active-low hardware lock: tied to GND for write enable, VCC for full read-only mode |
| VCC | Power Supply | Primary supply input (2.7–5.5V); powers internal logic and EEPROM array |
| GND | Ground Reference | System ground return path for all internal circuitry and I/O signals |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte Page Write Mode | Reduces firmware overhead by allowing burst writes within a single page - cuts I²C transaction count vs. byte-by-byte writes |
| Schmitt Trigger Inputs | Enables reliable signal detection despite slow-rising or noisy I²C bus edges - eliminates need for external signal conditioning |
| Hardware Write Protection (WP) | Prevents unintended writes during power-up/down or reset sequences - no software dependency required |
| Cascadable Architecture | Supports multi-device EEPROM expansion without additional address decoding logic - simplifies BOM and layout |
| Self-Timed Write Cycle | Removes need for external timing control; host MCU can poll ACK or wait fixed 10 ms before next command |
Applications
| Industrial Sensor Calibration | Automotive ECU Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in programmable logic controllers and RTUs. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed 100-year data retention and 1M endurance for field recalibration cycles. Use Value: Eliminates need for external battery-backed RAM; reduces system cost and improves long-term field reliability. | Use Scenario: Holding vehicle-specific tuning maps, VIN-linked settings, and diagnostic trouble code (DTC) history in engine control modules. IC Role / Device Role / Timing Role: I²C-accessible EEPROM providing secure, WP-protected storage compliant with AEC-Q100 Class 2 temperature requirements. Use Value: Enables safe over-the-air (OTA) updates without risk of corruption during power interruption due to hardware write lock. |
| 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: Low-power (0.6 µA standby at 1.8V) serial EEPROM interfaced to metrology SoCs via isolated I²C. Use Value: Meets stringent 10-year battery life targets while maintaining secure, timestamped audit trails. | Use Scenario: Archiving usage counts, sterilization cycles, and operator IDs in FDA-class II portable infusion pumps and ventilators. IC Role / Device Role / Timing Role: Industrial-temperature EEPROM storing critical lifecycle data with write-protection enforced during normal operation. Use Value: Supports regulatory traceability requirements without requiring real-time OS or file-system overhead. |
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, but rated for commercial temp (0°C to +70°C); 400 kHz I²C at 5V only | Lacks industrial temperature qualification; not suitable for extended ambient or under-hood use | Select only for cost-sensitive consumer or lab equipment where −40°C operation is unnecessary |
| ON SEMICONDUCTOR CAT24C16WI-GT3 | Pin-compatible SOIC-8; supports 1.7V–5.5V; 1 MHz I²C at 5V; 1M endurance; 100-year retention | Broader voltage range and higher speed, but WP pin function differs (active-high vs. active-low) | Requires firmware revision to invert WP logic; verify I²C timing margins at 1 MHz in target system |
Compared with AT24C164-10PI, the AT24C16C-SSHM-T sacrifices industrial temperature range for lower unit cost, while the CAT24C16WI-GT3 offers faster I²C and wider voltage support but demands hardware and software adaptation for its active-high write protect.
Availability
AT24C164-10PI is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device manufacturing requiring stable component supply, long-lifecycle assurance, and consistent SOIC-8 packaging.
Supply support for AT24C164-10PI 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 for embedded control applications.
The AT24C164-10PI belongs to Microchip's legacy serial EEPROM product line, designed specifically for industrial and automotive systems needing reliable, low-power, I²C-compatible nonvolatile storage with hardware write protection.
FAQ
What is the operating temperature range specified for the AT24C164-10PI?
The AT24C164-10PI is rated for industrial temperature operation from −40°C to +85°C. This specification is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the official datasheet. The "I" suffix explicitly denotes industrial grade, distinguishing it from commercial-grade variants like AT24C164-10PC. This range ensures reliable performance in demanding environments such as factory automation controllers and automotive under-hood modules where the AT24C164-10PI is commonly deployed.
Does the AT24C164-10PI support 400 kHz I²C communication?
No, the AT24C164-10PI supports up to 100 kHz I²C clock frequency when operating at 2.7V, as specified in the AC Characteristics table. While the base AT24C164 family includes 5V-rated versions capable of 400 kHz, the "-10PI" variant - indicated by the "-2.7" suffix in its ordering row - is optimized for 2.7V–5.5V operation with timing parameters validated at 100 kHz. Using 400 kHz with AT24C164-10PI may result in setup/hold violations and communication failures, especially at lower VCC levels.
How does the Write Protect (WP) pin function on the AT24C164-10PI?
The WP pin on the AT24C164-10PI is an active-low hardware enable for write operations. When WP is pulled low (connected to GND), writes to memory are permitted; when WP is high (tied to VCC), all write commands - including byte, page, and write-enable instructions - are ignored. This behavior is independent of software state and remains effective during power transitions. The AT24C164-10PI datasheet confirms this function in the Pin Description and Features sections, making it a critical safeguard against accidental overwrites in safety-critical applications.
What package type is used for the AT24C164-10PI?
The AT24C164-10PI is supplied in an 8-lead JEDEC-standard SOIC package (package code 8S1), measuring 0.150" wide with gull-wing leads. This is explicitly stated in the Ordering Information table and Packaging Information section of the datasheet. The "PI" suffix denotes industrial temperature grade in SOIC packaging, distinguishing it from the PDIP variant (8P3) denoted by "PC" or "PI" with different package codes. The 8S1 footprint is compatible with standard surface-mount assembly processes and widely supported in PCB design libraries.
Can multiple AT24C164-10PI devices share the same I²C bus?
Yes, up to eight AT24C164-10PI devices can share a single I²C bus using hardware address lines A0, A1, and A2. Each device's 7-bit I²C address is formed by the fixed prefix "1010" followed by the logic states of A0–A2, allowing unique addressing without external logic. This cascading capability is documented in the Device Addressing and Features sections of the datasheet and is functionally identical across all AT24C164 variants, including the AT24C164-10PI. No firmware or hardware modification is needed beyond setting the address pins.
AT24C164-10PI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C164-10PI FAQ
1.How can I place an order for AT24C164-10PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C164-10PI 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 AT24C164-10PI reliable?
The price and inventory of AT24C164-10PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C164-10PI is usually 5 days.
3.What payment methods are accepted for AT24C164-10PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C164-10PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C164-10PI?
AT24C164-10PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C164-10PI 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 AT24C164-10PI?
For technical support, including AT24C164-10PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C164-10PI requirements.
6.How does Aetrix verify that AT24C164-10PI is sourced from the original manufacturer or authorized distributors?
All AT24C164-10PI 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 AT24C164-10PI meets industry standards.
7.What is the process for return or replacement of AT24C164-10PI?
All AT24C164-10PI units undergo pre-shipment inspection (PSI). If there is an issue with AT24C164-10PI, 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 AT24C164-10PI part is unused and in its original packaging.
Return procedure for AT24C164-10PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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