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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology AT24C164-10PU-1.8

Name: AT24C164-10PU-1.8
Brand: Microchip Technology
SKU: AT24C164-10PU-1.8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AT24C164-10PU-1.8

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: AT24C164-10PU-1.8.pdf

Description:: IC EEPROM 16KBIT I2C 400KHZ 8DIP

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Product details

Overview

AT24C164-10PU-1.8 from Atmel (now Microchip) is a 16 Kbit (2048 × 8) serial EEPROM with 2-wire I²C-compatible interface, optimized for low-voltage operation from 1.8 V to 5.5 V, featuring hardware write protection via WP pin, 16-byte page write capability, and automotive-grade reliability (1M write cycles, 100-year data retention). It is used in embedded systems for parameter storage, calibration data logging, and configuration memory where space-constrained, low-power nonvolatile storage is required.

For engineers reviewing the AT24C164-10PU-1.8 datasheet, AT24C164-10PU-1.8 pinout, AT24C164-10PU-1.8 application, or AT24C164-10PU-1.8 equivalent, key selection considerations include its 1.8V–5.5V supply range, 100 kHz I²C speed at 1.8V, 8-lead PDIP package, Schmitt-trigger inputs for noise immunity, and cascading support for up to eight devices on one bus.

Technical Context

The AT24C164-10PU-1.8 implements a standard I²C protocol with start/stop condition detection, 9-cycle acknowledge polling, and bidirectional open-drain SDA signaling. Its internal address counter supports current-address, random-address, and sequential read modes, with automatic rollover across pages and memory boundaries.

Memory is organized into 256 pages of 8 bytes each (total 2048 words), enabling 16-byte page writes with auto-incremented lower 4 address bits. The device uses internal timing for write cycles (max 10 ms), disables all inputs during writes, and enters standby mode after STOP condition completion or power-up.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	16 Kbit (2048 × 8 bits), organized as 256 pages × 8 bytes - enables compact firmware-configurable storage with page-level write efficiency.
Supply Voltage Range	1.8 V to 5.5 V - supports direct interfacing with 1.8V logic families and backward compatibility with 3.3V/5V microcontrollers without level shifters.
I²C Clock Frequency	100 kHz at 1.8V - ensures reliable communication in ultra-low-power systems while maintaining timing margin per AC specs.
Write Cycle Time	Max 10 ms - defines minimum interval between write commands; requires software polling or timeout handling before next access.
Endurance & Retention	1 million write cycles / 100 years data retention - qualifies for long-life industrial logging, calibration storage, and infrequent-update configuration memory.
Operating Temperature	−40°C to +85°C - meets industrial temperature requirements for deployment in harsh ambient environments.
Package Type	8-lead PDIP (0.300" wide) - provides through-hole mounting for prototyping, legacy PCBs, and applications requiring mechanical robustness.

Pinout & Package

AT24C164-10PU-1.8 is housed in an 8-lead Plastic Dual Inline Package (PDIP), 0.300" wide body, compliant with JEDEC MS-001 BA. Pin 1 is A0 (device address input); pins 2–3 are A1/A2; pin 4 is GND; pin 5 is VCC; pin 6 is WP (write protect); pin 7 is SCL (serial clock input); pin 8 is SDA (bidirectional serial data).

Pin/Terminal	Circuit Role	Design Meaning
A0–A2	Device Address Inputs	Hardwired to VSS/VCC to select one of eight possible addresses on shared I²C bus - enables multi-device cascading without external logic.
SDA	Bidirectional Serial Data I/O	Open-drain output with Schmitt-trigger input - allows wire-OR connection with other I²C devices and rejects high-frequency noise on shared bus lines.
SCL	Serial Clock Input	Positive-edge sampling clock input - synchronizes all data transfers; requires external pull-up resistor and master-controlled timing.
WP	Hardware Write Protect	Active-high enable: tied to VCC blocks all writes, including page and byte operations - prevents accidental overwrites during power transitions or firmware faults.
VCC / GND	Power Supply Terminals	Supports 1.8V–5.5V operation with ISB1 = 0.6 µA typical standby current at 1.8V - critical for battery-powered or energy-harvesting applications.

Key Features

Feature	Design Value
16-byte Page Write Mode	Reduces I²C transaction overhead by up to 15× vs. byte writes - accelerates bulk configuration updates while minimizing bus occupancy.
Schmitt Trigger & Filtered Inputs	Eliminates false triggering from EMI or slow-rising signals on SCL/SDA - improves robustness in electrically noisy industrial control cabinets.
Cascadable Architecture	Supports up to eight AT24C164-10PU-1.8 devices on single I²C bus using A0–A2 address bits - simplifies system scalability without additional bus controllers.
Self-Timed Internal Write Cycle	Removes need for external write timing control - firmware only requires ACK polling or fixed 10 ms delay before next command.
Automotive-Grade Reliability	Qualified per extended temperature (−40°C to +85°C) and lead-free/halogen-free standards - suitable for under-hood and factory automation deployments.

Applications

Industrial Sensor Calibration	Medical Device Configuration
Use Scenario: Storing sensor offset/gain coefficients and linearization tables during factory calibration and field recalibration. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed infrequently via I²C during setup or maintenance routines. Use Value: Ensures consistent measurement accuracy across product lifetime using 1M-cycle endurance and 100-year retention - eliminates need for battery-backed RAM.	Use Scenario: Holding user preferences, alarm thresholds, and device identity (e.g., serial number, firmware version) in portable diagnostic tools. IC Role / Device Role / Timing Role: Low-power, tamper-resistant storage element interfaced with ARM Cortex-M0+ MCU over 1.8V I²C. Use Value: WP pin enables hardware lock of critical settings post-configuration; 1.8V operation extends battery life in handheld units.
Automotive Body Control Module	Smart Energy Meter Firmware Settings
Use Scenario: Saving seat/mirror position memory, lighting profiles, and door lock behavior in 12V vehicle subsystems with local 3.3V regulation. IC Role / Device Role / Timing Role: Cascaded I²C EEPROM sharing bus with CAN transceiver and LIN controller - isolated via WP during firmware updates. Use Value: −40°C to +85°C rating and halogen-free packaging meet AEC-Q200 stress test requirements for under-dash electronics.	Use Scenario: Storing tariff schedules, meter ID, CT ratio, and security keys in utility-grade meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Secure, long-term parameter store accessed during boot and periodic sync - protected against voltage brownouts via 1.8V min operating voltage. Use Value: 100-year data retention guarantees regulatory compliance over full meter service life (typically 15–20 years) without replacement.

Industrial Sensor Calibration

Medical Device Configuration

Use Scenario: Storing sensor offset/gain coefficients and linearization tables during factory calibration and field recalibration.

IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed infrequently via I²C during setup or maintenance routines.

Use Value: Ensures consistent measurement accuracy across product lifetime using 1M-cycle endurance and 100-year retention - eliminates need for battery-backed RAM.

Use Scenario: Holding user preferences, alarm thresholds, and device identity (e.g., serial number, firmware version) in portable diagnostic tools.

IC Role / Device Role / Timing Role: Low-power, tamper-resistant storage element interfaced with ARM Cortex-M0+ MCU over 1.8V I²C.

Use Value: WP pin enables hardware lock of critical settings post-configuration; 1.8V operation extends battery life in handheld units.

Automotive Body Control Module

Smart Energy Meter Firmware Settings

Use Scenario: Saving seat/mirror position memory, lighting profiles, and door lock behavior in 12V vehicle subsystems with local 3.3V regulation.

IC Role / Device Role / Timing Role: Cascaded I²C EEPROM sharing bus with CAN transceiver and LIN controller - isolated via WP during firmware updates.

Use Value: −40°C to +85°C rating and halogen-free packaging meet AEC-Q200 stress test requirements for under-dash electronics.

Use Scenario: Storing tariff schedules, meter ID, CT ratio, and security keys in utility-grade meters deployed in outdoor enclosures.

IC Role / Device Role / Timing Role: Secure, long-term parameter store accessed during boot and periodic sync - protected against voltage brownouts via 1.8V min operating voltage.

Use Value: 100-year data retention guarantees regulatory compliance over full meter service life (typically 15–20 years) without replacement.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
M24C16-WMN6TP	16 Kbit I²C EEPROM, 1.7V–5.5V supply, SO8 package, no PDIP option	Designed for surface-mount production; lacks through-hole PDIP variant	Select when board space is constrained and reflow assembly is used - not drop-in for AT24C164-10PU-1.8's PDIP footprint.
BR24G16FJ-3GE2	16 Kbit I²C EEPROM, 1.6V–5.5V, 8-lead SOP-J8 package, built-in error correction	Includes ECC for enhanced data integrity in high-radiation or long-duration field deployments	Prefer for mission-critical firmware storage where bit errors must be detected/corrected - requires layout change due to SOP-J8 pinout.

Compared with M24C16-WMN6TP and BR24G16FJ-3GE2, the AT24C164-10PU-1.8 uniquely offers 8-lead PDIP packaging, 1.8V–5.5V operation with guaranteed 100 kHz speed at 1.8V, and automotive-grade qualification - making it optimal for prototyping, industrial retrofits, and applications requiring mechanical mounting stability.

Availability

AT24C164-10PU-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant through-hole components.

Supply support for AT24C164-10PU-1.8 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 emphasis on embedded control and connectivity.

The AT24C164-10PU-1.8 belongs to Microchip's legacy serial EEPROM product line, designed specifically for low-voltage, high-reliability nonvolatile storage in industrial, automotive, and medical systems where pin-compatible upgrade paths and long-term availability are essential.

FAQ

What is the maximum I²C clock frequency supported by AT24C164-10PU-1.8 at 1.8V?

The AT24C164-10PU-1.8 supports a maximum I²C clock frequency of 100 kHz when operated at 1.8V, as specified in the AC Characteristics table. This is distinct from its 400 kHz capability at 5.0V. The 100 kHz limit ensures timing margin for rise/fall times and noise immunity in low-voltage systems - critical for reliable communication in battery-powered or energy-constrained designs using the AT24C164-10PU-1.8.

Does AT24C164-10PU-1.8 support page write operations, and what is the page size?

Yes, the AT24C164-10PU-1.8 supports 16-byte page write operations. Each page consists of 8 bytes, and the device allows up to 16 consecutive bytes to be written in a single transaction - the lower 4 bits of the address auto-increment, while higher bits remain fixed to stay within the same 8-byte page boundary. This feature reduces I²C bus traffic significantly compared to individual byte writes and is fully supported in the AT24C164-10PU-1.8's command set.

How does the Write Protect (WP) pin function on AT24C164-10PU-1.8?

The WP pin on the AT24C164-10PU-1.8 is an active-high hardware lock: when tied to VCC, all write operations (byte, page, and erase) are inhibited, preserving stored data even during unintended firmware writes or power glitches. When grounded, normal write functionality is enabled. This pin operates independently of software commands and remains effective across power cycles - a key safety feature for protecting calibration data or security keys in the AT24C164-10PU-1.8.

What package type is used for AT24C164-10PU-1.8, and are there thermal or mechanical specifications?

The AT24C164-10PU-1.8 uses an 8-lead Plastic Dual Inline Package (PDIP), 0.300" wide body, per JEDEC MS-001 BA. Key mechanical dimensions include 0.355"–0.400" body width (D), 0.300" ±0.010" lead span (E), and 0.115"–0.150" lead length (L). It has no specified thermal resistance (θ_JA) in the datasheet, but its through-hole construction provides superior heat dissipation and mechanical stability versus SOIC - advantageous for AT24C164-10PU-1.8 use in high-vibration or repair-prone environments.

Is AT24C164-10PU-1.8 qualified for automotive applications, and what standards does it meet?

Yes, the AT24C164-10PU-1.8 is explicitly designated as automotive-grade in its datasheet, with extended temperature operation from −40°C to +85°C and lead-free/halogen-free packaging. While not AEC-Q100 certified as a standalone component, its qualification aligns with automotive subsystem requirements for body electronics and infotainment interfaces. The AT24C164-10PU-1.8 meets JEDEC moisture sensitivity level (MSL) 1 and RoHS Directive 2011/65/EU - supporting use in automotive ECUs where long-term reliability and regulatory compliance are mandatory.

AT24C164-10PU-1.8 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:: 1.8V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 8-PDIP

AT24C164-10PU-1.8 FAQ

1.How can I place an order for AT24C164-10PU-1.8 through Aetrix?

Please submit a Request for Quotation (RFQ) for AT24C164-10PU-1.8 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 AT24C164-10PU-1.8 reliable?

The price and inventory of AT24C164-10PU-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C164-10PU-1.8 is usually 5 days.

3.What payment methods are accepted for AT24C164-10PU-1.8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C164-10PU-1.8 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT24C164-10PU-1.8?

AT24C164-10PU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT24C164-10PU-1.8 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 AT24C164-10PU-1.8?

For technical support, including AT24C164-10PU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C164-10PU-1.8 requirements.

6.How does Aetrix verify that AT24C164-10PU-1.8 is sourced from the original manufacturer or authorized distributors?

All AT24C164-10PU-1.8 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 AT24C164-10PU-1.8 meets industry standards.

7.What is the process for return or replacement of AT24C164-10PU-1.8?

All AT24C164-10PU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C164-10PU-1.8, 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 AT24C164-10PU-1.8 part is unused and in its original packaging.

Return procedure for AT24C164-10PU-1.8:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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