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Microchip Technology 24LC512-E/P
- Part No.:
- 24LC512-E/P
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
24LC512-E/P.pdf
- Description:
- IC EEPROM 512KBIT I2C 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,740
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Product details
Overview
24LC512-E/P from Microchip Technology Inc. is a 512 Kbit (64K × 8) I²C-compatible serial EEPROM with hardware write-protection, 128-byte page buffer, and extended temperature operation from –40°C to +125°C. It operates from 2.5V to 5.5V, supports up to 400 kHz clock frequency, and delivers ultra-low standby current (1 µA max) for battery-backed systems in automotive and industrial control.
For engineers reviewing the 24LC512-E/P datasheet, 24LC512-E/P pinout, 24LC512-E/P application, or 24LC512-E/P equivalent, this device serves as a drop-in replacement for legacy 24LC512 variants requiring extended-temperature reliability, I²C bus noise immunity via Schmitt-trigger inputs, and cascaded multi-device memory expansion up to 4 Mbit.
Technical Context
The 24LC512-E/P implements a two-wire I²C interface with fixed 4-bit control code (1010b) and user-configurable 3-bit chip address (A2–A0), enabling up to eight devices on one bus. Its internal architecture includes a 128-byte page latch, HV generator for EEPROM programming, and memory control logic supporting byte and page writes with self-timed erase/write cycles.
It features Schmitt-trigger inputs on SDA/SCL for robust noise suppression, output slope control to minimize ground bounce, and hardware write-protection via the WP pin - sampled at Stop condition to enable/disable full-array writes. The device uses CMOS technology optimized for low-power embedded systems requiring >200 years data retention and >1 million endurance cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (64K × 8), organized as single block with contiguous addressing |
| VCC Range | 2.5V to 5.5V - ensures compatibility with 3.3V and 5V microcontroller I/O domains |
| Max Clock Frequency | 400 kHz - defines maximum I²C bus throughput; limited to 100 kHz below 2.5V (not applicable here) |
| Page Write Buffer | 128 bytes - enables efficient bulk writes without host-side timing overhead |
| Write Cycle Time | 5 ms max - determines minimum interval between successive write commands |
| Endurance | 1,000,000 erase/write cycles - supports long-life logging and configuration storage |
| Data Retention | >200 years - guarantees nonvolatile data integrity across product lifecycle |
Pinout & Package
24LC512-E/P is supplied in an 8-lead PDIP (Plastic Dual In-Line Package) with 300-mil body width, RoHS-compliant matte tin lead finish, and standard through-hole mounting. Pin 1 is marked by notch or dot; package meets JEDEC MS-001-AB and Microchip Drawing No. C04-018-P Rev E.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Address Input | User-configurable LSB of 3-bit device address; hardwired to VSS or VCC to select one of eight possible I²C addresses |
| A1 | Chip Address Input | Middle bit of device address; enables multi-device bus topology without external logic |
| A2 | Chip Address Input | MSB of device address; combined with A0/A1, allows up to eight 24LC512-E/P units on same I²C bus |
| VSS | Ground Reference | Primary return path for all internal circuitry; must be connected to system GND with low-impedance trace |
| SDA | Serial Data I/O | Open-drain bidirectional line for address/data transfer; requires external pull-up resistor (2–10 kΩ) |
| SCL | Serial Clock Input | Master-generated clock signal synchronizing all I²C transactions; Schmitt-trigger input suppresses noise |
| WP | Hardware Write-Protect | Active-high pin disabling all write operations when tied to VCC; sampled only at Stop condition |
| VCC | Power Supply | Single 2.5–5.5V supply powering EEPROM array, interface logic, and HV generator |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Eliminates false triggering from bus noise; VHYS ≥ 0.05×VCC ensures reliable SDA/SCL edge detection |
| Output slope control | Reduces ground bounce during SDA transitions, preventing logic corruption in dense PCB layouts |
| Page write capability | 128-byte buffer allows burst writes without host intervention, cutting firmware overhead vs. byte-by-byte writes |
| Hardware write-protection | WP pin disables writes at hardware level - immune to software faults or accidental overwrites |
| Extended temperature range | –40°C to +125°C operation validated per AEC-Q100 Grade 1, suitable for under-hood automotive use |
Applications
| Automotive Body Control Module | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing calibration data, fault logs, and user-defined settings in engine control units and door module ECUs. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via I²C during power-up and runtime reconfiguration. Use Value: Extended temperature rating (–40°C to +125°C) and AEC-Q100 qualification ensure reliability in harsh under-hood environments. | Use Scenario: Retaining ladder logic parameters, I/O mapping, and firmware update metadata across power cycles in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent parameter store interfaced to ARM Cortex-M host MCU over 400 kHz I²C bus. Use Value: 128-byte page write reduces write latency by >90% vs. byte writes, accelerating configuration save operations. |
| Medical Diagnostic Equipment | Smart Energy Metering |
Use Scenario: Securely storing sensor calibration coefficients, usage history, and regulatory compliance logs in portable ultrasound and ECG devices. IC Role / Device Role / Timing Role: Tamper-resistant data archive with hardware write-protection enabled during normal operation. Use Value: Hardware WP pin prevents unauthorized firmware or calibration modification - critical for FDA/IEC 62304 compliance. | Use Scenario: Recording tariff schedules, metering intervals, tamper events, and cryptographic keys in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: High-endurance EEPROM backing up time-critical billing data with guaranteed 1M-cycle lifetime. Use Value: 1,000,000 erase/write cycles and >200-year data retention meet ANSI C12.19 and IEC 62056 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC512-I/P | Same pinout and functionality, but rated for industrial temperature (–40°C to +85°C) only | Not qualified for extended-temperature automotive or high-ambient industrial use | Select 24LC512-I/P only if ambient operating temperature remains ≤+85°C and AEC-Q100 is not required |
| AT24C512BN-SH-T | Pin-compatible 512 Kbit I²C EEPROM from Microchip (formerly Atmel); supports 1 MHz clock, 1.7–5.5V VCC | Broader voltage range and higher speed, but lacks AEC-Q100 qualification and extended-temp validation | Choose AT24C512BN-SH-T for 1 MHz I²C systems or 1.7V operation; verify thermal derating for >85°C use |
Compared with 24LC512-I/P, the 24LC512-E/P adds extended temperature support and AEC-Q100 qualification - essential for automotive deployment. Versus AT24C512BN-SH-T, it trades higher clock speed for guaranteed reliability at +125°C, making it preferred for thermally constrained industrial and automotive modules.
Availability
24LC512-E/P is available at Aetrix Electronics and suitable for automotive body control, industrial PLC configuration, medical diagnostic equipment, and smart energy metering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 24LC512-E/P 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, FPGA, and memory solutions, serving automotive, industrial, communications, and consumer markets with vertically integrated silicon and development tools.
The 24LC512-E/P belongs to Microchip's 24XX512 family of I²C serial EEPROMs, designed specifically for robust, low-power, nonvolatile data storage in safety-critical and thermally demanding embedded systems.
FAQ
What is the operating voltage range for the 24LC512-E/P?
The 24LC512-E/P operates from 2.5V to 5.5V DC. This range ensures compatibility with both 3.3V and 5V logic systems while maintaining full specification compliance across the extended temperature range (–40°C to +125°C). Operation below 2.5V is not supported for this variant - unlike the 24AA512 or 24FC512 families which support down to 1.7V.
Does the 24LC512-E/P support 1 MHz I²C clock speed?
No, the 24LC512-E/P supports a maximum clock frequency of 400 kHz. While the 24FC512 variant supports 1 MHz, the 24LC512-E/P is specified for 400 kHz operation across its full VCC (2.5–5.5V) and temperature (–40°C to +125°C) range. Attempting 1 MHz operation may result in timing violations and unreliable communication.
How does hardware write-protection work on the 24LC512-E/P?
The WP pin on the 24LC512-E/P is sampled at the Stop condition of each write command. When tied to VCC, all write operations (byte and page) are inhibited - though read operations remain fully functional. The protection is hardware-enforced and cannot be overridden by software, providing fail-safe data integrity for critical configuration storage.
What is the page size and maximum page write length for the 24LC512-E/P?
The 24LC512-E/P has a 128-byte page buffer and enforces strict page boundaries aligned to 128-byte offsets (0x0000, 0x0080, etc.). A single page write command can transmit up to 128 bytes, but crossing a physical page boundary causes wraparound within the current page - not automatic advancement to the next page. Software must manage address alignment to avoid unintended overwrites.
Is the 24LC512-E/P AEC-Q100 qualified and what grade does it meet?
Yes, the 24LC512-E/P is AEC-Q100 qualified and certified for Grade 1 (–40°C to +125°C ambient), meeting stress test requirements for automotive electronic components. This qualification covers HTOL, TCT, ESD, and other reliability tests - confirming suitability for under-hood and chassis-mounted applications where thermal and electrical robustness are mandatory.
24LC512-E/P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
24LC512-E/P FAQ
1.How can I place an order for 24LC512-E/P through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC512-E/P 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 24LC512-E/P reliable?
The price and inventory of 24LC512-E/P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC512-E/P is usually 5 days.
3.What payment methods are accepted for 24LC512-E/P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC512-E/P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC512-E/P?
24LC512-E/P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC512-E/P 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 24LC512-E/P?
For technical support, including 24LC512-E/P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC512-E/P requirements.
6.How does Aetrix verify that 24LC512-E/P is sourced from the original manufacturer or authorized distributors?
All 24LC512-E/P 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 24LC512-E/P meets industry standards.
7.What is the process for return or replacement of 24LC512-E/P?
All 24LC512-E/P units undergo pre-shipment inspection (PSI). If there is an issue with 24LC512-E/P, 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 24LC512-E/P part is unused and in its original packaging.
Return procedure for 24LC512-E/P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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