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Microchip Technology AT24C512C1-10CI-1.8

Name: AT24C512C1-10CI-1.8
Brand: Microchip Technology
SKU: AT24C512C1-10CI-1.8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AT24C512C1-10CI-1.8

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-TDFN

Datasheet:: AT24C512C1-10CI-1.8.pdf

Description:: IC EEPROM 512KBIT I2C 8LAP

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Product details

Overview

AT24C512C1-10CI-1.8 from Microchip Technology (formerly Atmel) is a 512 Kbit (65,536 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage embedded systems. It operates from 1.8 V to 3.6 V, supports 100 kHz I²C clock rate at 1.8 V, features hardware write protection via WP pin, and delivers 100,000 write cycles with 40-year data retention. It is used in industrial sensor calibration storage and battery-powered IoT node configuration memory.

For engineers reviewing the AT24C512C1-10CI-1.8 datasheet, AT24C512C1-10CI-1.8 pinout, AT24C512C1-10CI-1.8 application, or AT24C512C1-10CI-1.8 equivalent, this page provides verified electrical parameters, industrial-grade temperature support (–40°C to +85°C), 8-pin LAP package details, and validated alternative part options for low-voltage EEPROM design-in.

Technical Context

The AT24C512C1-10CI-1.8 implements a two-wire I²C interface with open-drain SDA/SCL pins, Schmitt-triggered inputs for noise immunity, and bidirectional data transfer using acknowledge polling. Its internal architecture organizes memory into 512 pages of 128 bytes each, enabling partial-page writes without address rollover beyond page boundaries.

Device addressing uses A0/A1 pins to support up to four devices on a shared bus; unconnected A0/A1 default to logic low. The WP pin provides hardware-level write inhibition when tied to VCC, while internally pulled down when floating-enabling robust firmware-independent data protection in field-deployed systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	512 Kbit (65,536 × 8 bits), sufficient for storing full device configuration, calibration tables, or firmware metadata in space-constrained designs.
Supply Voltage Range	1.8 V to 3.6 V - enables direct integration with 1.8 V microcontrollers and energy-harvesting power rails without level-shifting.
I²C Clock Frequency	100 kHz maximum at 1.8 V - ensures reliable timing margin under low-VCC conditions while maintaining compatibility with legacy I²C masters.
Write Cycle Time	20 ms max - defines minimum interval between successive write commands; impacts real-time logging latency and firmware retry logic.
Endurance & Retention	100,000 write cycles / 40 years data retention - meets long-life requirements for industrial control EEPROM usage without wear-leveling firmware.
Operating Temperature	–40°C to +85°C - qualified for industrial ambient environments including factory automation and outdoor metering equipment.
Standby Current	0.2 µA typical at 1.8 V - minimizes quiescent power draw in always-on battery-backed applications such as smart sensors.

Pinout & Package

AT24C512C1-10CI-1.8 is supplied in an 8-pin Leadless Array Package (LAP), 0.300" wide, with exposed pad not electrically connected. This RoHS-compliant surface-mount package measures 4.90 mm × 3.90 mm × 0.95 mm and supports reflow soldering per JEDEC J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
A0	Device Address Input	Hardwired low or floating to set LSB of 7-bit I²C slave address; enables multi-device bus topology with up to four AT24C512 units.
A1	Device Address Input	Hardwired low or floating to set MSB of 7-bit I²C slave address; used with A0 to configure unique device address in cascaded systems.
NC	No Connect	Unbonded pin; must remain unconnected on PCB to avoid unintended coupling or ESD path disruption.
GND	Ground Reference	Primary return path for VCC and I/O signals; requires low-impedance connection to system ground plane for noise immunity.
VCC	Power Supply	1.8 V to 3.6 V supply input; bypass capacitor (0.1 µF ceramic) required within 5 mm for stable I²C communication.
WP	Write Protect Control	Active-high hardware lock: tied to VCC disables all write operations; floating defaults to GND enabling normal writes.
SCL	Serial Clock Input	Open-drain input synchronized to master clock; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC.
SDA	Serial Data I/O	Open-drain bidirectional line for address/data transfer; shares pull-up with SCL and other I²C devices on same bus.

Key Features

Feature	Design Value
1.8 V Operation	Enables direct interfacing with 1.8 V logic families and ultra-low-power MCUs without voltage translation circuitry.
128-byte Page Write	Reduces firmware overhead by allowing burst programming of up to 128 bytes per I²C transaction, improving write throughput.
Schmitt-trigger Inputs	Rejects high-frequency noise on SCL/SDA lines, eliminating false start/stop detection in electrically noisy industrial enclosures.
Hardware Write Protect	Prevents accidental overwrites during power brownouts or firmware glitches by physically disabling write access via WP pin.
Industrial Temperature Range	Validated operation from –40°C to +85°C ensures reliability in uncontrolled environments like HVAC controllers or motor drives.

Applications

Smart Energy Metering	Industrial PLC Configuration Storage
Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs in utility-grade electricity meters operating on 1.8 V backup power. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent settings accessible via I²C during cold boot or brownout recovery. Use Value: Maintains metrological accuracy across 40-year service life with guaranteed 100,000 write cycles for daily log updates.	Use Scenario: Saving ladder logic runtime parameters and I/O mapping tables in programmable logic controllers deployed in factory-floor cabinets. IC Role / Device Role / Timing Role: Dedicated EEPROM for user-modifiable operational parameters, isolated from main MCU flash to prevent corruption during firmware updates. Use Value: Enables field reconfiguration without hardware changes; WP pin prevents unintended writes during EMI-heavy motor switching events.
Wireless Sensor Node Calibration	Medical Diagnostic Device Settings
Use Scenario: Storing factory-calibrated ADC offset/gain coefficients and temperature compensation curves in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Low-power serial memory accessed only during sensor initialization or recalibration routines to minimize active time. Use Value: 0.2 µA standby current extends coin-cell battery life beyond 10 years; 1.8 V compatibility eliminates need for boost converters.	Use Scenario: Holding regulatory-compliant device-specific settings (e.g., alarm thresholds, display brightness, language selection) in portable diagnostic tools. IC Role / Device Role / Timing Role: Secure parameter store with hardware write protection ensuring FDA-mandated configuration integrity after initial setup. Use Value: WP pin tied to system security controller prevents unauthorized modification; 40-year retention satisfies medical device lifecycle requirements.

Smart Energy Metering

Industrial PLC Configuration Storage

Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs in utility-grade electricity meters operating on 1.8 V backup power.

IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent settings accessible via I²C during cold boot or brownout recovery.

Use Value: Maintains metrological accuracy across 40-year service life with guaranteed 100,000 write cycles for daily log updates.

Use Scenario: Saving ladder logic runtime parameters and I/O mapping tables in programmable logic controllers deployed in factory-floor cabinets.

IC Role / Device Role / Timing Role: Dedicated EEPROM for user-modifiable operational parameters, isolated from main MCU flash to prevent corruption during firmware updates.

Use Value: Enables field reconfiguration without hardware changes; WP pin prevents unintended writes during EMI-heavy motor switching events.

Wireless Sensor Node Calibration

Medical Diagnostic Device Settings

Use Scenario: Storing factory-calibrated ADC offset/gain coefficients and temperature compensation curves in battery-powered environmental sensors.

IC Role / Device Role / Timing Role: Low-power serial memory accessed only during sensor initialization or recalibration routines to minimize active time.

Use Value: 0.2 µA standby current extends coin-cell battery life beyond 10 years; 1.8 V compatibility eliminates need for boost converters.

Use Scenario: Holding regulatory-compliant device-specific settings (e.g., alarm thresholds, display brightness, language selection) in portable diagnostic tools.

IC Role / Device Role / Timing Role: Secure parameter store with hardware write protection ensuring FDA-mandated configuration integrity after initial setup.

Use Value: WP pin tied to system security controller prevents unauthorized modification; 40-year retention satisfies medical device lifecycle requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
M24C512-RMN6TP	Same 512 Kbit density and 1.8 V operation, but rated for –40°C to +105°C and uses 8-pin SOIC-EP package.	Higher max temperature rating suits automotive under-hood use; different package requires PCB layout change.	Select if extended temperature range or SOIC footprint is required; not pin-compatible with AT24C512C1-10CI-1.8's LAP package.
BR24G512FJ-WE2	512 Kbit I²C EEPROM with 1.7 V min supply, 400 kHz max speed at 1.8 V, and built-in error correction code (ECC).	ECC improves bit-error resilience in high-radiation or long-term archival applications where data integrity is critical.	Choose when enhanced reliability against soft errors is needed; ECC adds minor firmware overhead but no pinout change.

Compared with M24C512-RMN6TP and BR24G512FJ-WE2, AT24C512C1-10CI-1.8 offers proven industrial qualification in a compact LAP package with minimal external components, making it optimal for cost-sensitive, space-constrained industrial designs where ECC or >85°C operation is unnecessary.

Availability

AT24C512C1-10CI-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration storage, battery-powered IoT node configuration, and medical device parameter retention requiring stable component supply across multi-year production cycles.

Supply support for AT24C512C1-10CI-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 is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with broad industrial and automotive qualifications.

The AT24C512 series was designed for low-voltage, high-reliability serial memory applications in industrial control, instrumentation, and embedded systems requiring long-term data integrity without refresh.

FAQ

What is the maximum I²C clock frequency supported by AT24C512C1-10CI-1.8?

The AT24C512C1-10CI-1.8 supports up to 100 kHz I²C clock frequency when operated at 1.8 V. This is specified in the AC Characteristics table under fSCL for the 1.8-volt column. Higher frequencies (400 kHz or 1 MHz) require higher VCC levels (2.7 V or 5.0 V), which are outside the operating range of this specific variant. The 100 kHz limit ensures timing compliance and noise margin in low-voltage systems.

Does AT24C512C1-10CI-1.8 include built-in write protection beyond the WP pin?

Yes, AT24C512C1-10CI-1.8 supports both hardware and software write protection. The WP pin provides hardware-level inhibition of all writes when pulled high to VCC. Additionally, software write protection is enabled by toggling WP to VCC just before initiating a write sequence - a feature documented in the WP pin description. No internal block-lock or sector-protection registers are present; protection is global and pin-controlled.

What package type is used for AT24C512C1-10CI-1.8, and is it RoHS compliant?

AT24C512C1-10CI-1.8 uses the 8-pin Leadless Array Package (LAP), designated as 8C1 in Microchip's ordering guide. It is RoHS compliant and lead-free, with dimensions of 4.90 mm × 3.90 mm × 0.95 mm. The package has no exposed thermal pad and is qualified for standard reflow profiles per JEDEC J-STD-020, making it suitable for automated SMT assembly.

Can AT24C512C1-10CI-1.8 be used in automotive applications?

AT24C512C1-10CI-1.8 is rated for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. While it may function in some under-dash automotive environments, Microchip offers automotive-grade variants (e.g., AT24C512C1-10CU-1.8) with AEC-Q100 Grade 3 certification. For production automotive use, the automotive-qualified version - not AT24C512C1-10CI-1.8 - must be selected to meet reliability and qualification requirements.

How many devices can share the same I²C bus with AT24C512C1-10CI-1.8?

Up to four AT24C512C1-10CI-1.8 devices can share a single I²C bus using the A0 and A1 address pins. Each device's 7-bit slave address is formed by fixed prefix bits plus A1/A0 values, allowing unique addresses 0x50–0x53. All devices must use identical VCC and signal levels; bus capacitance must remain ≤400 pF, requiring appropriate pull-up resistor sizing for the total number of devices.

AT24C512C1-10CI-1.8 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-TDFN

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: EEPROM

Technology:: EEPROM

Memory Size:: 512Kbit

Memory Organization:: 64K x 8

Memory Interface:: I2C

Clock Frequency:: 400 kHz

Write Cycle Time - Word, Page:: 10ms

Access Time:: 900 ns

Voltage - Supply:: 1.8V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-LAP (8x5)

AT24C512C1-10CI-1.8 FAQ

1.How can I place an order for AT24C512C1-10CI-1.8 through Aetrix?

Please submit a Request for Quotation (RFQ) for AT24C512C1-10CI-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 AT24C512C1-10CI-1.8 reliable?

The price and inventory of AT24C512C1-10CI-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 AT24C512C1-10CI-1.8 is usually 5 days.

3.What payment methods are accepted for AT24C512C1-10CI-1.8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C512C1-10CI-1.8 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT24C512C1-10CI-1.8?

AT24C512C1-10CI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT24C512C1-10CI-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 AT24C512C1-10CI-1.8?

For technical support, including AT24C512C1-10CI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C512C1-10CI-1.8 requirements.

6.How does Aetrix verify that AT24C512C1-10CI-1.8 is sourced from the original manufacturer or authorized distributors?

All AT24C512C1-10CI-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 AT24C512C1-10CI-1.8 meets industry standards.

7.What is the process for return or replacement of AT24C512C1-10CI-1.8?

All AT24C512C1-10CI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C512C1-10CI-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 AT24C512C1-10CI-1.8 part is unused and in its original packaging.

Return procedure for AT24C512C1-10CI-1.8:

1.Submit a request within 90 days.

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

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