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

Microchip Technology AT24C512C-SSHMEU-T

Name: AT24C512C-SSHMEU-T
Brand: Microchip Technology
SKU: AT24C512C-SSHMEU-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AT24C512C-SSHMEU-T

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: AT24C512C-SSHMEU-T.pdf

Description:: IC EEPROM 512KBIT I2C 8SOIC

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Product details

Overview

AT24C512C-SSHMEU-T from Microchip Technology is a 512-Kbit I²C-compatible serial EEPROM organized as 65,536 × 8 bits, operating from 1.7V to 3.6V or 2.5V to 5.5V, with industrial temperature range (−40°C to +85°C), 1 MHz Fast Mode Plus support, and hardware write-protection via WP pin - used for nonvolatile parameter storage in embedded controllers, power management units, and sensor calibration modules.

For engineers reviewing the AT24C512C-SSHMEU-T datasheet, AT24C512C-SSHMEU-T pinout, AT24C512C-SSHMEU-T application, or AT24C512C-SSHMEU-T equivalent, key selection criteria include voltage-grade compatibility (1.7–3.6V vs. 2.5–5.5V), page-write timing (≤5 ms), standby current (≤6 μA), and I²C bus address configuration using A0/A1/A2 pins.

Technical Context

The AT24C512C-SSHMEU-T implements a two-wire I²C slave interface with Schmitt-triggered, noise-filtered SDA/SCL inputs, supporting Standard (100 kHz), Fast (400 kHz), and Fast Mode Plus (1 MHz) speeds depending on VCC level. It uses an internal high-voltage generation circuit for EEPROM cell programming and includes a Power-on Reset (POR) circuit with 100 µs tPUP delay after stable VCC.

Memory is organized into 512 pages of 128 bytes each, enabling partial-page writes and sequential reads across address boundaries. Device addressing uses a fixed 4-bit identifier (1010b) plus three hardware-configurable bits (A0–A2), allowing up to eight devices on one bus; the WP pin provides full-array hardware write protection when driven high.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory size	512 Kbit (65,536 × 8), sufficient for firmware configuration tables, calibration coefficients, or device identity data in space-constrained systems.
Supply voltage range	1.7V–3.6V (low-voltage grade) or 2.5V–5.5V (standard grade); dual-range operation enables drop-in use across battery-powered and line-powered designs.
I²C speed modes	100 kHz (1.7–5.5V), 400 kHz (1.7–5.5V), 1 MHz (2.5–5.5V); supports high-throughput updates without bus contention in mixed-speed systems.
Write endurance	1,000,000 cycles per memory location - validated for frequent recalibration or logging applications over product lifetime.
Data retention	100 years at 55°C - ensures long-term reliability of stored settings without refresh in industrial environments.
Standby current	Max 6 μA at 5.5V - minimizes quiescent power draw in always-on systems such as smart meters or IoT edge nodes.
Page write time	≤5 ms maximum self-timed write cycle - enables deterministic firmware update latency and simplifies host timeout handling.
ESD protection	>4,000 V HBM - enhances robustness against handling and system-level ESD events in manufacturing and field deployment.

Pinout & Package

AT24C512C-SSHMEU-T is supplied in an 8-lead SOIC package (3.9 mm × 4.9 mm, 1.27 mm pitch), with pin 1 marked by a beveled corner or dot. The package is RoHS-compliant, halide-free, and green.

Pin/Terminal	Circuit Role	Design Meaning
A0	Device address input	Hardware-selectable bit for I²C slave address; tied high/low to enable up to eight devices on same bus without software reconfiguration.
A1	Device address input	Second hardware-selectable address bit; combined with A0/A2, defines unique 3-bit slave address extension (1010xxxR/W).
A2	Device address input	Third hardware-selectable address bit; allows cascading multiple AT24C512C-SSHMEU-T devices on single I²C bus.
GND	Ground reference	System ground return path; must be low-impedance connection to minimize noise coupling into sensitive I²C signaling.
SDA	Serial data bidirectional I/O	Open-drain I²C data line requiring external pull-up (≤10 kΩ); supports wire-OR with other open-drain devices on shared bus.
SCL	Serial clock input	Input-only I²C clock line; must be pulled high externally; rising edge latches input data, falling edge outputs data.
WP	Write-protect control	Hardware lock: driven high to disable all writes (full-array protection); internally pulled down if floating, but external tie recommended.
VCC	Power supply	Single-supply input (1.7–3.6V or 2.5–5.5V); requires local decoupling capacitor (0.1 µF ceramic) near pin for noise immunity.

Key Features

Feature	Design Value
128-byte page write mode	Enables efficient multi-byte updates without full-memory erase; partial-page writes reduce host overhead and improve write throughput.
Schmitt-triggered, filtered inputs	Suppresses bus noise and contact bounce, eliminating need for external RC filtering on SDA/SCL lines in noisy industrial environments.
Ultra-low standby current (6 μA max)	Extends battery life in portable or energy-harvesting systems where EEPROM remains powered but inactive for extended periods.
Hardware write protection (WP pin)	Prevents accidental or malicious firmware corruption during power-up, reset, or software faults - no software dependency required.
100-year data retention at 55°C	Guarantees calibration data integrity over full product lifecycle in automotive or industrial deployments without periodic refresh.
Green packaging (RoHS/halide-free)	Meets global environmental compliance requirements for consumer, medical, and industrial end equipment without performance trade-offs.

Applications

Industrial PLC Configuration Storage	Medical Device Calibration Data
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing persistent state between power cycles and firmware updates. Use Value: Enables zero-downtime parameter changes via HMI without requiring EEPROM reprogramming tools - supported by 1 MHz I²C speed and 5 ms write time.	Use Scenario: Retaining sensor offset/gain coefficients and patient-specific therapy profiles in portable infusion pumps and diagnostic monitors. IC Role / Device Role / Timing Role: Trusted calibration vault with tamper-resistant write protection and long-term data integrity assurance. Use Value: Meets IEC 62304 Class C software safety requirements via hardware WP pin and 1M-cycle endurance for recalibration events.
Smart Energy Meter Firmware Settings	Automotive Body Control Module Identity
Use Scenario: Holding tariff schedules, metering constants, and communication credentials in ANSI C12.19-compliant electricity meters exposed to wide temperature swings. IC Role / Device Role / Timing Role: Secure, low-power configuration store interfacing directly with metrology SoC over I²C. Use Value: −40°C to +85°C operation and 100-year retention ensure accuracy compliance over 20+ year utility deployment lifetimes.	Use Scenario: Storing vehicle-specific VIN derivatives, seat position presets, and lighting configuration in BCMs for OEM production and dealership programming. IC Role / Device Role / Timing Role: Production-programmable identity and personalization memory with hardware write-lock post-assembly. Use Value: WP pin prevents unauthorized rewrites during service diagnostics, while 1.7V operation supports start-stop battery voltage transients.

Industrial PLC Configuration Storage

Medical Device Calibration Data

Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation cabinets.

IC Role / Device Role / Timing Role: Nonvolatile configuration register providing persistent state between power cycles and firmware updates.

Use Value: Enables zero-downtime parameter changes via HMI without requiring EEPROM reprogramming tools - supported by 1 MHz I²C speed and 5 ms write time.

Use Scenario: Retaining sensor offset/gain coefficients and patient-specific therapy profiles in portable infusion pumps and diagnostic monitors.

IC Role / Device Role / Timing Role: Trusted calibration vault with tamper-resistant write protection and long-term data integrity assurance.

Use Value: Meets IEC 62304 Class C software safety requirements via hardware WP pin and 1M-cycle endurance for recalibration events.

Smart Energy Meter Firmware Settings

Automotive Body Control Module Identity

Use Scenario: Holding tariff schedules, metering constants, and communication credentials in ANSI C12.19-compliant electricity meters exposed to wide temperature swings.

IC Role / Device Role / Timing Role: Secure, low-power configuration store interfacing directly with metrology SoC over I²C.

Use Value: −40°C to +85°C operation and 100-year retention ensure accuracy compliance over 20+ year utility deployment lifetimes.

Use Scenario: Storing vehicle-specific VIN derivatives, seat position presets, and lighting configuration in BCMs for OEM production and dealership programming.

IC Role / Device Role / Timing Role: Production-programmable identity and personalization memory with hardware write-lock post-assembly.

Use Value: WP pin prevents unauthorized rewrites during service diagnostics, while 1.7V operation supports start-stop battery voltage transients.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AT24C512BN-SH-B	Same 512-Kbit capacity and I²C interface, but rated only for 1.8V–5.5V operation; lacks 1.7V low-voltage support.	Not suitable for sub-1.8V battery-backed systems; otherwise functionally identical in industrial temperature range.	Select AT24C512C-SSHMEU-T when 1.7V operation or Fast Mode Plus (1 MHz) is required.
M24512-RMN6TP	STMicroelectronics 512-Kbit EEPROM with identical 1.7–5.5V range and 1 MHz support, but different I²C address map (10100xxR/W vs. 1010xxxR/W).	Requires minor firmware adjustment for A0–A2 address bit interpretation; pinout compatible but not software-transparent.	Choose M24512-RMN6TP only if ST's qualification pedigree or dual-sourcing strategy outweighs AT24C512C-SSHMEU-T's Microchip ecosystem integration.

Compared with AT24C512BN-SH-B, AT24C512C-SSHMEU-T adds 1.7V operation and 1 MHz Fast Mode Plus - critical for ultra-low-power and high-throughput designs; versus M24512-RMN6TP, it offers native 3-bit hardware addressing alignment and broader Microchip design support resources.

Availability

AT24C512C-SSHMEU-T is available at Aetrix Electronics and suitable for industrial PLCs, medical calibration systems, smart energy meters, and automotive body control modules requiring stable component supply, long-lifecycle availability, and RoHS-compliant sourcing.

Supply support for AT24C512C-SSHMEU-T 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on embedded control and connectivity.

The AT24C512C-SSHMEU-T belongs to Microchip's AT24C family of I²C serial EEPROMs, designed specifically for reliable, low-power nonvolatile data storage in resource-constrained embedded systems across industrial, medical, and automotive markets.

FAQ

What voltage ranges does the AT24C512C-SSHMEU-T support, and how do they affect I²C speed?

The AT24C512C-SSHMEU-T supports two voltage grades: 1.7V–3.6V (low-voltage) and 2.5V–5.5V (standard). At 1.7V–2.5V, it operates up to 400 kHz Fast mode; above 2.5V, it supports 1 MHz Fast Mode Plus. This dual-range capability allows direct integration into both battery-powered and mains-powered systems without level-shifting. The AT24C512C-SSHMEU-T datasheet specifies exact timing parameters per voltage band to ensure reliable bus timing.

How does the WP pin on the AT24C512C-SSHMEU-T provide hardware write protection?

The WP (Write-Protect) pin on the AT24C512C-SSHMEU-T disables all write operations - including byte, page, and erase - when driven high (to VCC). When WP is low or floating (internally pulled down), normal writes are enabled. This hardware lock operates independently of software state, preventing corruption during power-up glitches or firmware crashes. For secure deployment, AT24C512C-SSHMEU-T recommends tying WP to a controlled system signal rather than leaving it floating.

What is the memory organization of the AT24C512C-SSHMEU-T, and how does it impact page writes?

The AT24C512C-SSHMEU-T organizes its 65,536 bytes into 512 pages of 128 bytes each. Page writes are limited to within a single page boundary - crossing pages requires separate write commands. This structure enables efficient partial-page updates (e.g., writing 10 bytes starting at offset 120 in a page) without disturbing adjacent data. The AT24C512C-SSHMEU-T supports this via automatic address wraparound within the 128-byte window, reducing host-side address management overhead.

Can multiple AT24C512C-SSHMEU-T devices share the same I²C bus, and how is addressing managed?

Yes, up to eight AT24C512C-SSHMEU-T devices can share one I²C bus using hardware-configurable address pins A0, A1, and A2. Each pin connects to VCC or GND to set a unique 3-bit slave address extension, forming a full 7-bit address (1010xxxR/W). The AT24C512C-SSHMEU-T datasheet confirms this cascading capability and specifies that unconnected pins are internally pulled down - though Microchip recommends explicit biasing for noise immunity in production designs.

What is the guaranteed endurance and data retention for the AT24C512C-SSHMEU-T, and under what conditions are these specified?

The AT24C512C-SSHMEU-T guarantees 1,000,000 write cycles per memory location and 100 years of data retention at 55°C - both validated per JEDEC standards and confirmed in the official Microchip datasheet DS20006161B. Endurance is measured using page-write stress at 3.3V and 25°C; retention is extrapolated from accelerated testing at elevated temperature and voltage. These figures apply to the AT24C512C-SSHMEU-T across its full industrial temperature range (−40°C to +85°C) with no derating required.

AT24C512C-SSHMEU-T Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

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:: 5ms

Access Time:: 900 ns

Voltage - Supply:: 1.7V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

AT24C512C-SSHMEU-T FAQ

1.How can I place an order for AT24C512C-SSHMEU-T through Aetrix?

Please submit a Request for Quotation (RFQ) for AT24C512C-SSHMEU-T 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 AT24C512C-SSHMEU-T reliable?

The price and inventory of AT24C512C-SSHMEU-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C512C-SSHMEU-T is usually 5 days.

3.What payment methods are accepted for AT24C512C-SSHMEU-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C512C-SSHMEU-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT24C512C-SSHMEU-T?

AT24C512C-SSHMEU-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT24C512C-SSHMEU-T 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 AT24C512C-SSHMEU-T?

For technical support, including AT24C512C-SSHMEU-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C512C-SSHMEU-T requirements.

6.How does Aetrix verify that AT24C512C-SSHMEU-T is sourced from the original manufacturer or authorized distributors?

All AT24C512C-SSHMEU-T 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 AT24C512C-SSHMEU-T meets industry standards.

7.What is the process for return or replacement of AT24C512C-SSHMEU-T?

All AT24C512C-SSHMEU-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C512C-SSHMEU-T, 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 AT24C512C-SSHMEU-T part is unused and in its original packaging.

Return procedure for AT24C512C-SSHMEU-T:

1.Submit a request within 90 days.

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

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