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Microchip Technology 24LC512T-E/MF
- Part No.:
- 24LC512T-E/MF
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
24LC512T-E/MF.pdf
- Description:
- IC EEPROM 512KBIT I2C 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,731
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Product details
Overview
24LC512T-E/MF from Microchip Technology Inc. is a 512 Kbit I²C-compatible serial EEPROM organized as 64K × 8-bit, operating from 2.5V to 5.5V with industrial and extended temperature support (–40°C to +125°C), 400 kHz max clock frequency, 128-byte page write buffer, and hardware write-protect via WP pin. It serves in firmware storage, configuration retention, and calibration data logging for embedded control systems.
For engineers reviewing the 24LC512T-E/MF datasheet, 24LC512T-E/MF pinout, 24LC512T-E/MF application, or 24LC512T-E/MF equivalent, key selection considerations include VCC range compatibility (2.5–5.5V), extended-temp operation up to +125°C, 1 µA standby current, and cascading support for up to eight devices on one I²C bus.
Technical Context
The 24LC512T-E/MF implements a two-wire I²C interface with Schmitt-trigger inputs on SDA/SCL for noise immunity and slope-controlled outputs to suppress ground bounce. Its internal address counter supports sequential reads across the full 512K boundary, and the 128-byte page buffer enables efficient bulk writes without host-side timing constraints.
Write protection is hardware-enforced via the WP pin: tied to VCC, it disables all write operations while permitting reads; sampling occurs at the Stop bit, making mid-cycle toggling ineffective. Acknowledge polling is supported to detect write cycle completion without fixed delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (64K × 8-bit) - provides sufficient nonvolatile storage for boot code, device IDs, and runtime configuration in space-constrained designs. |
| VCC Range | 2.5V to 5.5V - compatible with standard 3.3V and 5V logic domains; excludes sub-2.5V operation unlike 24AA512/24FC512 variants. |
| Max Clock Frequency | 400 kHz - supports high-speed I²C communication while maintaining signal integrity on typical PCB traces. |
| Page Write Buffer | 128 bytes - reduces write transaction overhead by enabling single-stop multi-byte programming within one physical page. |
| Endurance | 1,000,000 erase/write cycles - ensures long-term reliability in applications requiring frequent parameter updates (e.g., energy metering, sensor calibration). |
| Data Retention | 200 years - guarantees data integrity over product lifetime without refresh, critical for industrial and automotive deployments. |
| Temp Range | –40°C to +125°C (Extended) - qualified for under-hood automotive, industrial motor drives, and harsh-environment telemetry nodes. |
Pinout & Package
24LC512T-E/MF is packaged in an 8-lead MicroLead Frame (MF) package - a near-chip-scale, leadless plastic package with exposed thermal pad, footprint-compatible with SOIC-8 but offering improved thermal performance and reduced board area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Address Input | User-configurable LSB of 3-bit device address; enables up to eight 24LC512T-E/MF devices on one I²C bus when hardwired to VSS or VCC. |
| A1 | Chip Address Input | Middle bit of 3-bit device address; determines unique I²C client address alongside A0 and A2. |
| A2 | Chip Address Input | MSB of 3-bit device address; allows contiguous 4 Mbit expansion across eight devices using A2–A0 as address bits A18–A16. |
| VSS | Ground Reference | Primary return path for all internal circuitry; must be low-impedance and connected directly to system ground plane. |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up resistor (2 kΩ typical for 400 kHz); changes only during SCL low except for Start/Stop conditions. |
| SCL | Serial Clock Input | Master-generated clock synchronizing all data transfers; Schmitt-trigger input ensures robust timing in noisy environments. |
| WP | Hardware Write-Protect | Active-high enable: tied to VCC blocks all writes (byte/page) while preserving read functionality; sampled at Stop bit edge. |
| VCC | Power Supply | Single supply input (2.5–5.5V); powers EEPROM array, control logic, and I/O buffers; decoupling capacitor (0.1 µF) required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Eliminates false triggering from EMI or slow-rising signals on SDA/SCL, enabling reliable operation in electrically noisy industrial settings. |
| Output slope control | Reduces ground bounce and EMI during output transitions, critical for stable I²C signaling in mixed-signal PCB layouts. |
| Self-timed write cycle | Removes need for host to manage write timing; internal 5 ms max erase/write eliminates software delays and simplifies firmware design. |
| 128-byte page write buffer | Enables burst programming of up to 128 bytes per Stop condition, improving throughput by >10× vs. byte-write mode in configuration update scenarios. |
| Hardware write-protect | Prevents accidental or malicious firmware corruption by disabling writes at the silicon level-no software dependency or privilege escalation required. |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing calibrated sensor offsets, I/O mapping tables, and user-defined logic parameters in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via I²C during power-up and runtime reconfiguration; retains data across cold starts and brownouts. Use Value: Enables field-upgradable logic without firmware reflashing; 200-year data retention ensures parameter integrity over 15+ year equipment lifetimes. | Use Scenario: Holding door lock actuator profiles, mirror position presets, and lighting dimming curves in automotive BCMs operating under hood temperatures up to +125°C. IC Role / Device Role / Timing Role: Extended-temperature EEPROM providing secure, persistent storage for user preferences and safety-critical calibration data. Use Value: AEC-Q100 qualification and –40°C to +125°C operation guarantee reliability in under-hood environments where standard EEPROMs fail. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Backup |
Use Scenario: Storing flow rate calibration coefficients, dose history logs, and regulatory audit trails in Class II medical infusion pumps requiring traceable, tamper-resistant memory. IC Role / Device Role / Timing Role: Secure, write-protected data logger interfaced to MCU via I²C; WP pin permanently tied to VCC to prevent unauthorized parameter modification. Use Value: Hardware-level write protection satisfies IEC 62304 safety requirements for immutable calibration data; 1M endurance supports daily recalibration over device lifetime. | Use Scenario: Backing up firmware bootloader and tariff tables in ANSI C12.20-compliant smart meters subjected to frequent power cycling and grid transients. IC Role / Device Role / Timing Role: High-reliability nonvolatile memory storing critical boot code and billing parameters; accessed during cold start before main application loads. Use Value: 1 µA standby current minimizes battery drain in backup power mode; 200-year retention ensures meter accuracy compliance over 20-year utility deployment cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA512-I/MF | Wider VCC range (1.7–5.5V); lower 100 kHz max clock below 2.5V; rated only for –40°C to +85°C. | Suitable for battery-powered IoT sensors operating down to 1.8V, but not for extended-temp automotive or industrial use. | Select 24AA512-I/MF only if sub-2.5V operation is required and extended temperature is unnecessary. |
| AT24C512BN-SH-B | Same 512 Kbit capacity and I²C interface; supports 1 MHz clock; rated –40°C to +85°C; no AEC-Q100 qualification. | Better suited for high-throughput consumer electronics where speed matters more than automotive qualification or extended temperature. | Choose AT24C512BN-SH-B when 1 MHz I²C bandwidth is needed and AEC-Q100 compliance is not mandated. |
Compared with 24LC512T-E/MF, the 24AA512-I/MF offers broader voltage flexibility but lacks extended temperature support, while the AT24C512BN-SH-B delivers higher speed but omits automotive qualification-making 24LC512T-E/MF the optimal choice for safety-critical, high-temperature embedded systems requiring guaranteed reliability.
Availability
24LC512T-E/MF is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply across long production lifecycles.
Supply support for 24LC512T-E/MF 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 Inc. is a leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.
The 24LC512 belongs to Microchip's serial EEPROM product line, designed specifically for robust, low-power, I²C-based nonvolatile data storage in automotive, industrial, and medical applications demanding extended temperature operation and AEC-Q100 qualification.
FAQ
What is the maximum clock frequency supported by the 24LC512T-E/MF?
The 24LC512T-E/MF supports a maximum I²C clock frequency of 400 kHz across its full VCC range (2.5V to 5.5V). Unlike the 24FC512 variant, it does not support 1 MHz operation-even at 5.5V. This 400 kHz limit ensures timing margin compliance under worst-case extended-temperature conditions (–40°C to +125°C) and maintains interoperability with legacy I²C masters.
Does the 24LC512T-E/MF support write-protection at the hardware level?
Yes, the 24LC512T-E/MF includes a dedicated Write-Protect (WP) pin that provides hardware-level write inhibition. When WP is tied to VCC, all write operations (byte and page) are blocked while read access remains fully functional. The WP state is sampled at the Stop bit of each write command, ensuring deterministic protection without software intervention.
What package type is used for the 24LC512T-E/MF?
The 24LC512T-E/MF uses the 8-lead MicroLead Frame (MF) package-a compact, leadless surface-mount package with an exposed thermal pad. It measures approximately 3.0 mm × 3.0 mm × 0.55 mm and is footprint-compatible with standard SOIC-8 but offers superior thermal performance and reduced PCB area usage.
How many devices can be connected on a single I²C bus using the 24LC512T-E/MF?
Up to eight 24LC512T-E/MF devices can be connected on a single I²C bus using the three hardware address pins (A0, A1, A2). Each device is assigned a unique 3-bit chip address by hardwiring these pins to VSS or VCC, enabling a total addressable memory space of up to 4 Mbit (8 × 512 Kbit) with contiguous addressing support.
Is the 24LC512T-E/MF qualified for automotive applications?
Yes, the 24LC512T-E/MF is AEC-Q100 qualified for automotive applications and rated for the extended temperature range of –40°C to +125°C. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD (>4 kV), making it suitable for under-hood and body-control module deployments where reliability under thermal and electrical stress is mandatory.
24LC512T-E/MF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN-S (6x5)
24LC512T-E/MF FAQ
1.How can I place an order for 24LC512T-E/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC512T-E/MF 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 24LC512T-E/MF reliable?
The price and inventory of 24LC512T-E/MF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC512T-E/MF is usually 5 days.
3.What payment methods are accepted for 24LC512T-E/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC512T-E/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC512T-E/MF?
24LC512T-E/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC512T-E/MF 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 24LC512T-E/MF?
For technical support, including 24LC512T-E/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC512T-E/MF requirements.
6.How does Aetrix verify that 24LC512T-E/MF is sourced from the original manufacturer or authorized distributors?
All 24LC512T-E/MF 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 24LC512T-E/MF meets industry standards.
7.What is the process for return or replacement of 24LC512T-E/MF?
All 24LC512T-E/MF units undergo pre-shipment inspection (PSI). If there is an issue with 24LC512T-E/MF, 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 24LC512T-E/MF part is unused and in its original packaging.
Return procedure for 24LC512T-E/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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