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Microchip Technology 24AA512-I/W17K
- Part No.:
- 24AA512-I/W17K
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- Die
- Datasheet:
-
24AA512-I/W17K.pdf
- Description:
- IC EEPROM 512KBIT I2C 400KHZ DIE
- Quantity:
- Payment:
- Shipping:
Inventory:1,868
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Product details
Overview
24AA512-I/W17K from Microchip Technology Inc. is a 512 Kbit I²C-compatible serial EEPROM organized as 64K × 8-bit memory, operating from 1.7V to 5.5V with industrial temperature range (–40°C to +85°C), 400 µA max read current, and hardware write-protect via WP pin. It supports cascading up to eight devices on one bus for extended address space in embedded control and data logging systems.
For engineers reviewing the 24AA512-I/W17K datasheet, 24AA512-I/W17K pinout, 24AA512-I/W17K application, or 24AA512-I/W17K equivalent, key selection criteria include low-voltage operation down to 1.7V, 128-byte page write buffer, Schmitt-trigger noise immunity on SDA/SCL, and guaranteed 1 million erase/write cycles with >200-year data retention.
Technical Context
The 24AA512-I/W17K implements a two-wire I²C interface with standard (100 kHz) and fast-mode (400 kHz) clock compatibility, supporting byte and page write operations with self-timed internal erase/write cycles. Its address decoding uses three hardware-configurable chip-select pins (A0–A2), enabling up to eight devices per bus.
Internally, it features a 128-byte page latch buffer, HV generator for EEPROM programming, and dedicated I/O control logic that enforces strict timing on SDA transitions relative to SCL edges-ensuring reliable communication even under noisy conditions via Schmitt-trigger inputs and output slope control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (64K × 8-bit), enabling storage of firmware parameters or calibration data in resource-constrained systems |
| VCC Range | 1.7V to 5.5V - supports direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level shifting |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V - delivers ~40 KB/s effective write throughput in page mode |
| Page Write Buffer | 128 bytes - reduces I²C transaction overhead by batching writes and minimizing host intervention |
| Endurance | 1,000,000 erase/write cycles - suitable for high-frequency logging applications such as energy metering or sensor calibration updates |
| Data Retention | >200 years at +85°C - ensures long-term reliability in unattended industrial deployments |
| Write Protection | Hardware-enabled via WP pin tied to VCC - prevents accidental overwrites during power-up or firmware glitches |
Pinout & Package
24AA512-I/W17K is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package with standard 150-mil body width and gull-wing leads. Pin 1 is marked with a notch or dot; device orientation follows JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Address Input | LSB of 3-bit hardware address; sets device ID on shared I²C bus - must be hard-wired to VSS or VCC |
| A1 | Chip Address Input | Middle bit of chip address; enables up to eight unique addresses (000–111) across multiple 24AA512-I/W17K units |
| A2 | Chip Address Input | MSB of chip address; determines device select when multiple EEPROMs share SDA/SCL lines |
| VSS | Ground Reference | Return path for all internal circuitry and I/O - requires low-impedance connection to system ground plane |
| SDA | Serial Data I/O | Open-drain bidirectional bus line - requires external pull-up resistor (2–10 kΩ depending on speed) |
| SCL | Serial Clock Input | Master-generated clock signal - rising edge samples data, falling edge allows data change per I²C protocol |
| WP | Write-Protect Control | Active-high enable: tied to VCC blocks all writes while permitting unlimited reads - critical for boot-critical configuration storage |
| VCC | Power Supply | Single supply input (1.7–5.5V); powers EEPROM core, interface logic, and charge pump - bypass capacitor recommended |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 1.7V - enables direct integration with ultra-low-power MCUs like PIC16LF or MSP430FRxx without voltage translation |
| Schmitt Trigger Inputs | On SDA and SCL pins with 50 mV hysteresis - rejects EMI-induced glitches in motor drives or industrial PLC environments |
| Output Slope Control | Controlled rise/fall times on SDA - eliminates ground bounce and signal integrity issues on dense PCB layouts |
| Page Write Capability | 128-byte buffer allows atomic multi-byte writes - avoids partial updates during power loss in configuration storage |
| ESD Protection | >4000V HBM - meets IEC 61000-4-2 Level 3 requirements for robustness in field-deployed equipment |
Applications
| Industrial Sensor Calibration | Medical Device Configuration Storage |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog front-end sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during power-on initialization via I²C; no timing-critical latency required. Use Value: Enables field-replaceable sensor modules with persistent calibration data - eliminating re-trimming after module swap. | Use Scenario: Holding user-defined alarm thresholds and operational modes in portable infusion pumps. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration memory with hardware write-protection active during runtime. Use Value: Prevents accidental overwrite of safety-critical settings during battery replacement or firmware update sequences. |
| Automotive Body Control Module | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Saving seat/mirror position presets and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: Low-power I²C slave storing user preferences; accessed infrequently but must survive automotive thermal cycling. Use Value: AEC-Q100 qualified operation ensures reliability across –40°C to +85°C ambient - no derating needed for under-hood proximity. | Use Scenario: Storing signed firmware patches for remote OTA updates in utility-grade electricity meters. IC Role / Device Role / Timing Role: High-endurance nonvolatile memory holding encrypted patch binaries prior to secure boot verification. Use Value: 1M-cycle endurance supports frequent patch deployment over 15+ year meter lifetime without wear-out concerns. |
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 | Requires minimum 2.5V VCC; same 400 kHz max clock and 128-byte page size | Not suitable for 1.8V systems; otherwise identical functionality and pinout | Select only if system VCC never drops below 2.5V and cost sensitivity outweighs voltage flexibility |
| AT24C512BN-SH-T | Same 512 Kbit density and I²C interface; supports 1 MHz clock at 2.5–5.5V; different A0–A2 addressing scheme | Higher-speed option for bandwidth-constrained hosts; requires validation of address mapping in multi-device setups | Choose when faster write throughput is critical and layout allows verification of alternate address decoding behavior |
Compared with 24AA512-I/W17K, the 24LC512-I/P lacks 1.7V operation but matches industrial temp and packaging, while AT24C512BN-SH-T offers higher clock speed at the cost of altered address handling - making 24AA512-I/W17K optimal for ultra-low-voltage, drop-in legacy replacement scenarios.
Availability
24AA512-I/W17K is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration storage, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for 24AA512-I/W17K 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 infrastructure.
The 24AA512 belongs to Microchip's serial EEPROM product line, engineered for robust, low-power nonvolatile data storage in space- and power-constrained embedded systems across industrial, automotive, and medical markets.
FAQ
What is the minimum supply voltage required for reliable operation of the 24AA512-I/W17K?
The 24AA512-I/W17K operates reliably down to 1.7V across its full industrial temperature range (–40°C to +85°C). Below 2.5V, maximum I²C clock frequency is limited to 100 kHz per datasheet DS20001754Q, ensuring compatibility with ultra-low-power microcontrollers and battery-backed systems where voltage regulation is minimal.
Does the 24AA512-I/W17K support page write operations, and what is the buffer size?
Yes, the 24AA512-I/W17K supports page write operations with a 128-byte on-chip buffer. This allows up to 128 bytes to be loaded into the buffer before initiating the internal write cycle, reducing I²C bus occupancy and improving efficiency compared to single-byte writes - especially valuable in time-sensitive embedded applications.
How does hardware write protection work on the 24AA512-I/W17K?
Hardware write protection on the 24AA512-I/W17K is controlled by the WP pin: when tied to VCC, all write operations (byte and page) are inhibited while read operations remain fully functional. The pin state is sampled at the Stop condition of each write command, providing deterministic, glitch-immune protection against unintended writes during power transitions.
Can multiple 24AA512-I/W17K devices share the same I²C bus, and how many?
Yes, up to eight 24AA512-I/W17K devices can share a single I²C bus using the A0, A1, and A2 address pins. Each combination of logic levels on these pins creates a unique 3-bit chip address, allowing individual addressing without software arbitration - essential for modular system designs with distributed configuration storage.
What is the endurance rating and data retention specification for the 24AA512-I/W17K?
The 24AA512-I/W17K is rated for more than 1,000,000 erase/write cycles and guarantees data retention exceeding 200 years at +85°C. These specifications are validated per Microchip's qualification standards and apply to both byte and page write modes, making it suitable for long-life applications such as utility meters and industrial controllers.
24AA512-I/W17K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tray
- 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 ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
24AA512-I/W17K FAQ
1.How can I place an order for 24AA512-I/W17K through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA512-I/W17K 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 24AA512-I/W17K reliable?
The price and inventory of 24AA512-I/W17K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA512-I/W17K is usually 5 days.
3.What payment methods are accepted for 24AA512-I/W17K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA512-I/W17K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA512-I/W17K?
24AA512-I/W17K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA512-I/W17K 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 24AA512-I/W17K?
For technical support, including 24AA512-I/W17K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA512-I/W17K requirements.
6.How does Aetrix verify that 24AA512-I/W17K is sourced from the original manufacturer or authorized distributors?
All 24AA512-I/W17K 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 24AA512-I/W17K meets industry standards.
7.What is the process for return or replacement of 24AA512-I/W17K?
All 24AA512-I/W17K units undergo pre-shipment inspection (PSI). If there is an issue with 24AA512-I/W17K, 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 24AA512-I/W17K part is unused and in its original packaging.
Return procedure for 24AA512-I/W17K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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