My Inquiry
My Account
Microchip Technology AT24C512W-10SI-2.7
- Part No.:
- AT24C512W-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT24C512W-10SI-2.7.pdf
- Description:
- IC EEPROM 512KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,238
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT24C512W-10SI-2.7 from Microchip Technology (formerly Atmel) is a 512 Kbit (65,536 × 8) two-wire serial EEPROM optimized for low-voltage industrial applications. It operates from 2.7V to 5.5V, supports up to 1 MHz I²C clock at 5V, features hardware write protection via WP pin, and delivers 100,000 write cycles with 40-year data retention. It is used in firmware storage, calibration data logging, and configuration memory in programmable logic controllers.
For engineers reviewing the AT24C512W-10SI-2.7 datasheet, AT24C512W-10SI-2.7 pinout, AT24C512W-10SI-2.7 application, or AT24C512W-10SI-2.7 equivalent, key selection considerations include its JEDEC SOIC-8 package, 2.7–5.5 V supply range, 128-byte page write capability, Schmitt-triggered noise-immune inputs, and automotive-grade temperature support (−40°C to +85°C).
Technical Context
The AT24C512W-10SI-2.7 implements a standard I²C-compatible 2-wire interface with bidirectional open-drain SDA and edge-triggered SCL. Its internal address counter enables current-address, random-address, and sequential read modes, while hardware address pins A0/A1 allow up to four devices on one bus.
It uses a cascaded page architecture-512 pages of 128 bytes each-with automatic address roll-over within pages during page writes. Write protection is enforced via the WP pin (active-high), and acknowledge polling supports non-blocking firmware update sequences without fixed delay timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 524,288 bits (65,536 × 8), sufficient for storing bootloader parameters or multi-channel sensor calibration tables |
| Supply Voltage Range | 2.7 V to 5.5 V - compatible with 3.3 V and 5 V microcontroller systems without level shifting |
| I²C Clock Frequency | Up to 1 MHz at 5 V - enables fast firmware updates; drops to 400 kHz at 2.7 V for stable low-voltage operation |
| Page Write Capacity | 128-byte page writes - reduces I²C transaction overhead vs. byte writes; partial page writes supported |
| Write Endurance | 100,000 write cycles - suitable for field-updatable configuration storage with daily rewrites over 27 years |
| Data Retention | 40 years at +85°C - ensures long-term reliability in industrial control cabinets and outdoor metering equipment |
| Operating Temperature | −40°C to +85°C - qualified for industrial automation, motor drives, and smart grid infrastructure |
| Write Protect | Hardware-enabled via WP pin tied to VCC - prevents accidental overwrites during power-up or brown-out conditions |
Pinout & Package
AT24C512W-10SI-2.7 is packaged in an 8-lead JEDEC SOIC (8S1), 0.150" wide body, with 1.27 mm lead pitch and Pb-free/halogen-free finish. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired low/high to select one of four possible I²C addresses (0x50–0x53); floating defaults to GND internally |
| A1 | Device Address Input | Second address bit; used with A0 to enable multi-device bus topology without external logic |
| NC | No Connect | Unbonded die pad; must remain unconnected - no pull-up/down or routing required |
| GND | Ground Reference | Return path for all internal circuitry; requires low-impedance connection to system ground plane |
| VCC | Power Supply | Primary supply input (2.7–5.5 V); bypass capacitor (0.1 µF ceramic) recommended adjacent to pin |
| WP | Write Protect Control | Active-high signal: tied to VCC disables all writes; tied to GND enables full read/write access |
| SCL | Serial Clock Input | Positive-edge sampled clock for I²C communication; requires external pull-up resistor (typically 2.2–10 kΩ) |
| SDA | Serial Data I/O | Bidirectional open-drain bus line; shares pull-up with other I²C devices; supports wire-OR arbitration |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables robust operation in electrically noisy environments (e.g., motor drive PCBs) by rejecting sub-threshold noise on SCL/SDA |
| 128-byte page write mode | Reduces firmware update time by >90% vs. byte writes - critical for field-deployed devices with limited maintenance windows |
| Self-timed write cycle (≤5 ms) | Eliminates need for precise software delay loops; host MCU can poll ACK to detect completion asynchronously |
| Internal address counter | Supports seamless sequential reads across page boundaries without host-side address management |
| Hardware + software write protection | WP pin provides fail-safe lockout; software protection via device address masking adds layered security for critical config data |
Applications
| Industrial PLC Configuration Storage | Smart Energy Meter Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via I²C during boot and runtime parameter updates. Use Value: Ensures deterministic startup behavior after power loss and supports remote reconfiguration without firmware reflashing. | Use Scenario: Retaining metrology calibration coefficients, tariff schedules, and tamper-event logs in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, endurance-rated data logger interfaced to metrology SoC via shared I²C bus. Use Value: Meets ANSI C12.19 data integrity requirements with 40-year retention and 100K-cycle endurance under daily billing cycles. |
| Automotive Body Control Module Settings | Medical Infusion Pump Safety Parameters |
Use Scenario: Saving user preferences (mirror position, seat memory), lighting profiles, and diagnostic fault codes in 12 V automotive BCMs. IC Role / Device Role / Timing Role: Automotive-grade EEPROM supporting AEC-Q100 stress testing and operating across −40°C to +85°C ambient. Use Value: Qualified for under-hood and cabin-mounted modules; WP pin prevents corruption during battery voltage transients. | Use Scenario: Storing drug library limits, dose safety interlocks, and regulatory audit trails in FDA Class II infusion pumps. IC Role / Device Role / Timing Role: Fail-safe configuration store with write-protection enforced during delivery mode to prevent runtime parameter alteration. Use Value: Supports IEC 62304 software safety classification by guaranteeing immutable safety-critical values post-verification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics M24512-RDW6TP | Same 512 Kbit density, 2.5–5.5 V supply, but rated only to +70°C (commercial) and lacks AEC-Q100 qualification | Not suitable for automotive or extended-temperature industrial use; lower cost for consumer-grade designs | Select when ambient temperature stays below +70°C and automotive qualification is unnecessary |
| ON Semiconductor CAT24C512WI-GT3 | Identical pinout and I²C timing, but specifies 1 MHz only at 5 V (no 400 kHz @ 2.7 V guarantee); WP pin functionally identical | May require design validation at 2.7 V operation; otherwise drop-in for most 3.3 V systems | Prefer when sourcing from ON Semi distribution channels; verify 2.7 V timing margin in final layout |
Compared with M24512-RDW6TP and CAT24C512WI-GT3, the AT24C512W-10SI-2.7 uniquely guarantees full 400 kHz I²C operation at 2.7 V and automotive-grade temperature range, making it the only choice for industrial control and automotive body electronics where voltage headroom and thermal margin are constrained.
Availability
AT24C512W-10SI-2.7 is available at Aetrix Electronics and suitable for industrial PLCs, smart energy meters, automotive body control modules, and medical infusion pumps requiring stable component supply across extended product lifecycles.
Supply support for AT24C512W-10SI-2.7 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 global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with broad industrial and automotive qualification capabilities.
The AT24Cxx family was designed specifically for reliable, low-power nonvolatile data storage in resource-constrained embedded systems - emphasizing noise immunity, write endurance, and seamless I²C integration.
FAQ
What is the maximum I²C clock frequency supported by AT24C512W-10SI-2.7 at 3.3 V?
The AT24C512W-10SI-2.7 supports up to 400 kHz at 2.7 V, and this rating extends fully to 3.3 V operation per the DC and AC characteristics table. At 5 V, it supports 1 MHz. The device does not specify a distinct 3.3 V frequency bin - users should apply the 2.7 V timing parameters for conservative 3.3 V designs.
Does AT24C512W-10SI-2.7 support partial page writes?
Yes, AT24C512W-10SI-2.7 supports partial page writes: the host may transmit any number of bytes (1–128) within a single page boundary without issuing a STOP condition. The internal address pointer increments automatically, and wrap-around occurs only at the 128-byte page limit - enabling efficient small-data updates.
How is the device address configured on AT24C512W-10SI-2.7?
AT24C512W-10SI-2.7 uses hardwired A0 and A1 pins to set the two LSBs of its 7-bit I²C address (base 0x50). With both pins grounded, the address is 0x50; A0=high/A1=low yields 0x51, and so on up to 0x53. Floating A0/A1 defaults to low via internal bias, resulting in address 0x50 unless externally pulled.
Is AT24C512W-10SI-2.7 qualified for automotive applications?
Yes, AT24C512W-10SI-2.7 is explicitly specified as "Automotive Grade" in the datasheet, with extended temperature operation from −40°C to +85°C and lead-free/halogen-free packaging. While not AEC-Q100 certified out-of-box, its electrical and thermal specs meet automotive subsystem requirements - qualification testing is customer-responsible per application context.
What happens if more than 128 bytes are written in a single page write sequence to AT24C512W-10SI-2.7?
If more than 128 bytes are transmitted in one page write sequence, the address pointer wraps around to the start of the same page, overwriting previously written data. The AT24C512W-10SI-2.7 does not auto-advance to the next page - the host must manage page boundaries explicitly to avoid unintended data loss.
AT24C512W-10SI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 1 MHz
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C512W-10SI-2.7 FAQ
1.How can I place an order for AT24C512W-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C512W-10SI-2.7 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 AT24C512W-10SI-2.7 reliable?
The price and inventory of AT24C512W-10SI-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C512W-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C512W-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C512W-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C512W-10SI-2.7?
AT24C512W-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C512W-10SI-2.7 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 AT24C512W-10SI-2.7?
For technical support, including AT24C512W-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C512W-10SI-2.7 requirements.
6.How does Aetrix verify that AT24C512W-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C512W-10SI-2.7 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 AT24C512W-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C512W-10SI-2.7?
All AT24C512W-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C512W-10SI-2.7, 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 AT24C512W-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT24C512W-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C512W-10SI-2.7 Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
