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Microchip Technology AT24C02AN-10SC-1.8
- Part No.:
- AT24C02AN-10SC-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C02AN-10SC-1.8.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,230
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Product details
Overview
AT24C02AN-10SC-1.8 from Microchip Technology (formerly Atmel) is a 2K-bit (256 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage embedded systems. It operates across 1.8V to 5.5V, supports 100 kHz I²C communication at 1.8V, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention - deployed in battery-powered sensor nodes and portable medical devices.
For engineers reviewing the AT24C02AN-10SC-1.8 datasheet, AT24C02AN-10SC-1.8 pinout, AT24C02AN-10SC-1.8 application, or AT24C02AN-10SC-1.8 equivalent, key selection criteria include 1.8V minimum supply compatibility, 8-pin SOIC (8S1) package footprint, page-write capability (8-byte pages), Schmitt-trigger noise immunity on SDA/SCL, and industrial-grade (-40°C to +85°C) temperature rating confirmed in ordering code suffix "I" variants.
Technical Context
The AT24C02AN-10SC-1.8 implements a standard two-wire I²C interface with open-drain SDA and SCL pins, requiring external pull-ups. Its internal address counter enables current-address and sequential reads, while device addressing uses hardwired A0–A2 pins to support up to eight devices on one bus.
Write operations are internally timed (max 10 ms), during which all inputs are disabled; acknowledge polling allows host firmware to detect write completion. The WP pin provides hardware-level write protection - tied to VCC to lock the upper 1K-bit array, or grounded for full read/write access.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 words × 8 bits), organized as 256 × 8 for byte-level random access |
| Supply Voltage Range | 1.8V to 5.5V - enables direct interfacing with 1.8V logic families without level shifters |
| I²C Clock Frequency | 100 kHz maximum at 1.8V - ensures reliable timing margin under low-VDD conditions |
| Write Cycle Time | ≤10 ms - defines minimum delay between write commands; impacts firmware polling interval |
| Endurance | 1,000,000 write cycles - supports frequent configuration updates in field-deployed equipment |
| Data Retention | 100 years at +25°C - guarantees long-term storage of calibration data or device identity |
| Standby Current | 3 µA max at 1.8V - critical for multi-year battery life in always-on IoT endpoints |
Pinout & Package
AT24C02AN-10SC-1.8 is housed in an 8-pin JEDEC SOIC package (package code 8S1), 0.150" wide, with standard gull-wing leads and 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired LSB of 3-bit device address; enables up to 8 devices on same I²C bus |
| A1 | Device Address Input | Mid-bit of device address; must match PCB trace connection for correct bus arbitration |
| A2 | Device Address Input | MSB of device address; determines unique I²C slave address (0x50–0x57) |
| GND | Ground Reference | Return path for VCC and signal currents; requires low-impedance PCB plane |
| VCC | Power Supply | 1.8V–5.5V input; bypass capacitor (0.1 µF) mandatory near pin for noise suppression |
| WP | Write Protect Control | Active-high hardware lock: VCC = protect upper 1K-bit; GND = full read/write access |
| SCL | Serial Clock Input | Open-drain input synchronized to host MCU clock; requires external pull-up resistor |
| SDA | Serial Data I/O | Bidirectional open-drain line shared across I²C bus; Schmitt-trigger input rejects noise |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V operation support | Guaranteed functionality down to 1.8V VCC - eliminates need for voltage translators in 1.8V SoC designs |
| Schmitt-trigger inputs | Enhanced noise immunity on SDA/SCL lines - prevents false clock/data transitions in electrically noisy environments |
| Hardware write protection | WP pin enables selective locking of upper memory block - prevents accidental firmware corruption during field updates |
| 8-byte page write mode | Reduces I²C transaction overhead vs. byte writes - cuts write time by up to 8× for contiguous data blocks |
| Industrial temperature range | -40°C to +85°C operation - validated for use in automotive body control modules and industrial PLCs |
Applications
| Smart Metering | Wearable Health Monitors |
|---|---|
Use Scenario: Storing tariff tables, calibration coefficients, and tamper-event logs in electricity/water meters with 10+ year field life. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed 100-year data retention and 1M endurance for daily firmware updates. Use Value: Eliminates backup batteries or supercapacitors required by volatile RAM-based logging, reducing BOM cost and board area. |
Use Scenario: Saving patient-specific sensor calibration, usage history, and alarm thresholds in Bluetooth-enabled ECG patches. IC Role / Device Role / Timing Role: Low-power I²C EEPROM interfaced directly to 1.8V BLE SoC; accessed only during boot or user-initiated sync. Use Value: Enables <3 µA standby current draw - extending coin-cell battery life beyond 12 months without recharging. |
| Automotive Body Controllers | Industrial Sensor Transmitters |
Use Scenario: Holding seat position memory, mirror presets, and lighting profiles in vehicle door modules operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade EEPROM with AEC-Q200 alignment (via qualification of parent family); withstands automotive thermal cycling. Use Value: Provides deterministic write timing (≤10 ms) and hardware WP - preventing corruption during ignition transients or load-dump events. |
Use Scenario: Storing sensor linearization parameters, factory calibration offsets, and serial numbers in 4–20 mA loop-powered pressure transmitters. IC Role / Device Role / Timing Role: Serial EEPROM powered from loop-derived 3.3V rail; accessed infrequently during commissioning or diagnostics. Use Value: 1.8V–5.5V supply range accommodates brown-out conditions during loop power dips, ensuring parameter integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M24C02-RMN6TP | STMicroelectronics 2K I²C EEPROM; 1.7V–5.5V range; 400 kHz @ 5V but only 100 kHz @ 1.8V; identical 8-pin SOIC (SO8) package | Same pinout and memory map; supports same industrial temp range (-40°C to +85°C) | Drop-in replacement if existing layout uses SO8 footprint; verify WP pin behavior matches - M24C02 uses active-low WP |
| BR24G02NUX-10 | Rohm 2K I²C EEPROM; 1.6V–5.5V range; 1 MHz max speed at 5V, but 100 kHz guaranteed at 1.7V; 8-pin TSSOP (VSON008X2030) package | Different package (TSSOP vs SOIC) requires PCB redesign; higher speed not usable at 1.8V | Preferred for new designs targeting ultra-low-power wearables where TSSOP's smaller footprint saves space |
Compared with AT24C02AN-10SC-1.8, M24C02-RMN6TP offers identical form/fit/function with minor WP polarity difference, while BR24G02NUX-10 trades SOIC compatibility for space savings and slightly lower Vmin - both require validation of write-protection logic and I²C timing margins in target system.
Availability
AT24C02AN-10SC-1.8 is available at Aetrix Electronics and suitable for smart metering, wearable health monitors, automotive body controllers, and industrial sensor transmitters requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AT24C02AN-10SC-1.8 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 acquired Atmel in 2016 and maintains full product continuity, quality assurance, and long-term supply commitment for the AT24CxxA EEPROM family.
The AT24C02A series was designed specifically for cost-sensitive, low-power embedded systems needing reliable nonvolatile storage - emphasizing ultra-low VCC operation, robust I²C interoperability, and high endurance in space-constrained packages.
FAQ
What is the minimum operating voltage for AT24C02AN-10SC-1.8?
The AT24C02AN-10SC-1.8 is rated for operation from 1.8V to 5.5V. Its "-1.8" suffix explicitly denotes guaranteed functionality at the 1.8V lower limit, including full 100 kHz I²C communication, valid read/write timing, and proper WP pin response - verified per Microchip's DC and AC characteristics tables.
Does AT24C02AN-10SC-1.8 support page writes, and what is the page size?
Yes, AT24C02AN-10SC-1.8 supports 8-byte page writes. This allows up to eight consecutive bytes to be written in a single I²C transaction, significantly improving throughput versus individual byte writes. Page boundaries are fixed at 8-byte intervals, and address wraparound occurs within the same page if more than eight bytes are sent.
What is the function of the WP pin on AT24C02AN-10SC-1.8?
The WP (Write Protect) pin on AT24C02AN-10SC-1.8 provides hardware-level memory protection. When pulled high to VCC, it locks the upper 1K-bit half of the 2K memory array against writes; when grounded, full read/write access is enabled. This prevents accidental overwrites during power-up or firmware glitches.
Is AT24C02AN-10SC-1.8 qualified for industrial temperature operation?
Yes, AT24C02AN-10SC-1.8 is specified for industrial temperature range (-40°C to +85°C), as confirmed by its ordering code suffix "I" (e.g., AT24C02AN-10SI-1.8) and the "Industrial" column in the official AT24C02A Ordering Information table. The "-10SC" variant denotes SOIC packaging and 10 ms max write cycle.
What package type does AT24C02AN-10SC-1.8 use?
AT24C02AN-10SC-1.8 uses an 8-pin JEDEC-standard SOIC package (package code 8S1), 0.150" wide, with gull-wing leads and 1.27 mm pitch. This is distinct from PDIP (8P3), TSSOP (8T), or 14-pin SOIC (14S) variants - confirmed in the Packaging Information section and ordering code breakdown.
AT24C02AN-10SC-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 2Kbit
- Memory Organization:
- 256 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C02AN-10SC-1.8 FAQ
1.How can I place an order for AT24C02AN-10SC-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02AN-10SC-1.8 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 AT24C02AN-10SC-1.8 reliable?
The price and inventory of AT24C02AN-10SC-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02AN-10SC-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C02AN-10SC-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02AN-10SC-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02AN-10SC-1.8?
AT24C02AN-10SC-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02AN-10SC-1.8 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 AT24C02AN-10SC-1.8?
For technical support, including AT24C02AN-10SC-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02AN-10SC-1.8 requirements.
6.How does Aetrix verify that AT24C02AN-10SC-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C02AN-10SC-1.8 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 AT24C02AN-10SC-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C02AN-10SC-1.8?
All AT24C02AN-10SC-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02AN-10SC-1.8, 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 AT24C02AN-10SC-1.8 part is unused and in its original packaging.
Return procedure for AT24C02AN-10SC-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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