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Microchip Technology 24LC512T-I/MF
- Part No.:
- 24LC512T-I/MF
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
24LC512T-I/MF.pdf
- Description:
- IC EEPROM 512KBIT I2C 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,300
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Product details
Overview
24LC512T-I/MF from Microchip Technology Inc. is a 512 Kbit I²C-compatible serial EEPROM organized as 64K × 8-bit memory, operating from 2.5V to 5.5V with industrial temperature range (–40°C to +85°C), 400 µA max read current, and 128-byte page write buffer. It supports cascading up to eight devices on one bus and features hardware write-protection via the WP pin for embedded system configuration storage.
For engineers reviewing the 24LC512T-I/MF datasheet, 24LC512T-I/MF pinout, 24LC512T-I/MF application, or 24LC512T-I/MF equivalent, key selection criteria include VCC min/max compliance (2.5–5.5V), I²C clock compatibility (up to 400 kHz), industrial-grade temperature operation, 1 µA standby current, and MF-package mechanical fit in space-constrained PCB layouts.
Technical Context
The 24LC512T-I/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 enables sequential, random, and current-address read modes across the full 64K address space.
Write operations support byte- and page-write modes, with self-timed erase/write cycles capped at 5 ms maximum. The device uses an internal HV generator for EEPROM programming and includes a 128-byte page latch to buffer incoming data before committing to nonvolatile memory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 512 Kbit (64K × 8-bit) - provides sufficient storage for firmware parameters, calibration data, or device configuration in resource-limited microcontroller systems. |
| VCC operating range | 2.5V to 5.5V - compatible with standard 3.3V and 5V logic domains without level-shifting. |
| I²C clock frequency | Up to 400 kHz - enables fast data transfer while maintaining robustness on noisy industrial buses. |
| Page write buffer | 128 bytes - reduces host CPU overhead by allowing bulk writes without per-byte command overhead. |
| Endurance | 1 million erase/write cycles - supports frequent field updates such as logging or runtime parameter tuning. |
| Data retention | Over 200 years - ensures long-term reliability of stored settings across product lifetime without refresh. |
| Standby current | 1 µA maximum (I-temp) - minimizes power draw in battery-backed or always-on applications. |
Pinout & Package
The 24LC512T-I/MF is supplied in an 8-lead DFN package (3 mm × 2 mm, 0.75 mm height) with exposed pad, designated "MF" in Microchip's packaging nomenclature. Pin 1 is marked by a dot; the exposed pad may be connected to VSS or left floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip address input | Configures LSB of 3-bit device address; enables up to eight 24LC512T-I/MF devices on same I²C bus when hardwired to VSS or VCC. |
| A1 | Chip address input | Mid-bit of device address; determines unique I²C client address alongside A0 and A2 for multi-device addressing. |
| A2 | Chip address input | MSB of device address; used with A0/A1 to select one of eight possible addresses (1010xx0/1) on shared bus. |
| VSS | Ground reference | System return path for all internal circuitry; must be low-impedance connection to minimize noise coupling into EEPROM array. |
| SDA | Serial data I/O | Open-drain bidirectional line requiring external pull-up; carries I²C address, command, and data; supports ACK polling during write cycles. |
| SCL | Serial clock input | Master-generated clock synchronizing all I²C transfers; Schmitt-trigger input ensures reliable edge detection under noisy conditions. |
| WP | Write-protect control | Hardware lock: tied to VCC disables all writes (read-only mode); tied to VSS enables full read/write access. |
| VCC | Power supply | Primary supply rail (2.5–5.5V); powers EEPROM core, interface logic, and internal charge pump for write operations. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Provides 0.05×VCC hysteresis on SDA/SCL, rejecting noise spikes ≤50 ns and enabling reliable operation in electrically harsh environments. |
| Output slope control | Slows signal edges to eliminate ground bounce during switching, preventing false logic transitions in mixed-signal PCB layouts. |
| Page write capability | Accepts up to 128 bytes in one transaction, reducing I²C bus occupancy and host processor intervention versus byte-by-byte writes. |
| Hardware write-protection | WP pin physically disables write commands when asserted high, eliminating risk of accidental firmware corruption during power-up or reset. |
| 125°C extended temp option | While 24LC512T-I/MF is rated for –40°C to +85°C, the same die is qualified to –40°C to +125°C in E-temp variants (e.g., 24LC512T-E/MF), supporting under-hood automotive use. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data Retention |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and user-defined alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via I²C during boot and runtime; retains values across power cycles without backup battery. Use Value: Enables field reconfiguration without firmware update; 1 µA standby current extends uptime in battery-buffered backup scenarios. | Use Scenario: Preserving sensor offset/gain coefficients, patient-specific therapy profiles, and regulatory audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant data vault; WP pin prevents unauthorized modification of calibrated values during device servicing. Use Value: Meets IEC 62304 data integrity requirements; 200-year data retention eliminates recalibration intervals over product lifecycle. |
| Automotive Body Control Module Settings | Consumer Appliance User Preference Memory |
Use Scenario: Saving seat/mirror position presets, lighting behavior modes, and door lock configurations in 12V automotive body electronics. IC Role / Device Role / Timing Role: I²C slave storing persistent user preferences; operates reliably across automotive voltage transients (2.5–5.5V VCC range). Use Value: Qualified to AEC-Q100 Grade 2 (–40°C to +105°C) in related variants; 1M endurance supports daily reprogramming over 10+ years. | Use Scenario: Retaining cooking programs, display brightness levels, and child-lock status in smart ovens, washing machines, and HVAC remotes. IC Role / Device Role / Timing Role: Low-power serial memory interfaced directly to 3.3V microcontrollers; accessed only during setup or mode changes. Use Value: 400 µA active current and 1 µA standby minimize energy consumption in always-on appliances meeting ENERGY STAR® requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA512T-I/MF | Lower VCC min (1.7V), same 400 kHz I²C speed, identical pinout and timing - but not rated for 2.5V-only systems. | Preferred in battery-powered designs where supply may dip below 2.5V; unsuitable if system guarantees ≥2.5V at all times. | Select 24AA512T-I/MF only when 1.7V operation is required; otherwise 24LC512T-I/MF offers tighter VCC tolerance and broader industrial qualification. |
| AT24C512BN-SH-T | Same 512 Kbit density and I²C interface, but rated for 1.7–5.5V and offers 1 MHz clock support in 2.5–5.5V range; different pinout (SOIC-8 vs DFN-8). | Requires PCB layout change due to SOIC-8 footprint; better suited for prototyping or legacy board reuse where DFN assembly is unavailable. | Choose AT24C512BN-SH-T when higher-speed I²C (1 MHz) is needed or when SOIC-8 is mandated; verify WP functionality and endurance (1M cycles) match requirements. |
Compared with 24AA512T-I/MF and AT24C512BN-SH-T, the 24LC512T-I/MF delivers optimal balance of industrial temperature assurance, strict 2.5V minimum supply margin, and compact DFN-8 packaging - making it ideal for cost-sensitive, space-constrained, and thermally stable embedded systems where ultra-low-voltage operation is unnecessary.
Availability
24LC512T-I/MF is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, automotive body control modules, and consumer appliance control boards requiring stable component supply and long-term obsolescence management.
Supply support for 24LC512T-I/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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC512T-I/MF belongs to Microchip's 24XX512 family of I²C serial EEPROMs, designed specifically for reliable, low-power, nonvolatile data storage in industrial, automotive, and medical applications demanding proven endurance and long-term data integrity.
FAQ
What is the minimum supply voltage required for reliable operation of the 24LC512T-I/MF?
The 24LC512T-I/MF requires a minimum VCC of 2.5V for guaranteed operation across its full industrial temperature range (–40°C to +85°C). Operation below 2.5V is not specified and may result in incomplete writes, read errors, or failure to acknowledge I²C commands. This distinguishes it from the 24AA512T-I/MF, which supports down to 1.7V.
Does the 24LC512T-I/MF support 1 MHz I²C clock speed?
No, the 24LC512T-I/MF supports up to 400 kHz I²C clock frequency at VCC ≥ 2.5V. For 1 MHz operation, Microchip's 24FC512 variant is required. Attempting 1 MHz communication with the 24LC512T-I/MF will cause timing violations, missing ACKs, and unreliable data transfer.
How does the WP pin function on the 24LC512T-I/MF?
The WP (Write-Protect) pin on the 24LC512T-I/MF is sampled at the Stop bit of each write command. When tied to VCC, it disables all write operations (including byte and page writes) while permitting unrestricted reads. When tied to VSS, full read/write access is enabled. Toggling WP during a write cycle has no effect - protection state is latched only at Stop.
What package type does the 'MF' suffix indicate for the 24LC512T-I/MF?
The 'MF' suffix in 24LC512T-I/MF denotes Microchip's 8-lead DFN (Dual Flat No-lead) package measuring 3 mm × 2 mm × 0.75 mm, with an exposed thermal pad. This compact, surface-mount package supports high-density PCB layouts and offers improved thermal performance compared to SOIC or PDIP alternatives.
Can multiple 24LC512T-I/MF devices share the same I²C bus?
Yes, up to eight 24LC512T-I/MF devices can operate on a single I²C bus using hardware address lines A0, A1, and A2. Each device must have a unique combination of these pins tied to VSS or VCC to generate distinct 3-bit chip addresses (1010xxx), enabling individual addressing without software arbitration.
24LC512T-I/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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN-S (6x5)
24LC512T-I/MF FAQ
1.How can I place an order for 24LC512T-I/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC512T-I/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-I/MF reliable?
The price and inventory of 24LC512T-I/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-I/MF is usually 5 days.
3.What payment methods are accepted for 24LC512T-I/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC512T-I/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC512T-I/MF?
24LC512T-I/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC512T-I/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-I/MF?
For technical support, including 24LC512T-I/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC512T-I/MF requirements.
6.How does Aetrix verify that 24LC512T-I/MF is sourced from the original manufacturer or authorized distributors?
All 24LC512T-I/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-I/MF meets industry standards.
7.What is the process for return or replacement of 24LC512T-I/MF?
All 24LC512T-I/MF units undergo pre-shipment inspection (PSI). If there is an issue with 24LC512T-I/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-I/MF part is unused and in its original packaging.
Return procedure for 24LC512T-I/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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