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Microchip Technology AT24C02N-10SC-1.8
- Part No.:
- AT24C02N-10SC-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C02N-10SC-1.8.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,590
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Product details
Overview
AT24C02N-10SC-1.8 from Microchip Technology (formerly Atmel) is a 2 Kbit (256 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage embedded systems. It operates from 1.8 V to 5.5 V, supports 100 kHz I²C bus speed at 1.8 V, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in battery-powered IoT sensors for nonvolatile configuration storage.
For engineers reviewing the AT24C02N-10SC-1.8 datasheet, AT24C02N-10SC-1.8 pinout, AT24C02N-10SC-1.8 application, or AT24C02N-10SC-1.8 equivalent, key selection criteria include 1.8 V minimum supply, 8-byte page write capability, SOIC-8 package footprint, and I²C timing compliance at low voltage.
Technical Context
The AT24C02N-10SC-1.8 implements a two-wire I²C interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. Its internal memory is organized as 32 pages of 8 bytes each, requiring an 8-bit word address for random access.
It uses hard-wired A0–A2 device address pins (all active for 2K density), supports byte and page write modes, and enters standby mode automatically after STOP condition-drawing only 3 µA at 1.8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 words × 8 bits); sufficient for firmware calibration tables or device ID storage in compact nodes. |
| Supply Voltage Range | 1.8 V to 5.5 V; enables direct interfacing with 1.8 V logic domains without level shifters. |
| I²C Clock Frequency | 100 kHz max at 1.8 V; ensures reliable communication in power-constrained, noise-prone environments. |
| Write Cycle Time | 10 ms maximum; defines minimum interval between successive writes; impacts real-time logging latency. |
| Endurance | 1 million write cycles; supports frequent parameter updates in industrial control or metering applications. |
| Data Retention | 100 years at +25°C; guarantees long-term validity of stored calibration or security keys without refresh. |
| Standby Current | 3 µA at 1.8 V; minimizes quiescent power draw in always-on edge devices. |
Pinout & Package
AT24C02N-10SC-1.8 is housed in an 8-lead JEDEC SOIC (8S1) package, 0.150" wide, with standard gull-wing leads and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired LSB of 3-bit device address; enables up to eight AT24C02N-10SC-1.8 devices on one I²C bus. |
| A1 | Device Address Input | Mid-bit of device address; determines unique I²C slave address alongside A0 and A2. |
| A2 | Device Address Input | MSB of device address; all three pins (A2–A0) are active and required for 2K density addressing. |
| GND | Ground Reference | Return path for VCC and signal currents; must be low-impedance to maintain I²C noise margin. |
| VCC | Power Supply | 1.8–5.5 V input; powers internal logic and memory array; decoupling capacitor required per layout guidelines. |
| WP | Write Protect Control | Hardware lock: tied to GND for read/write, to VCC to protect entire 2K array from accidental writes. |
| SCL | Serial Clock Input | Positive-edge clock for data transfer; includes Schmitt trigger for robust timing in noisy environments. |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up; supports wire-OR with other I²C peripherals. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8 V operation support | Enables direct integration into modern ultra-low-power microcontroller subsystems without voltage translation. |
| 8-byte page write mode | Reduces I²C transaction overhead when updating multiple adjacent parameters-e.g., sensor offset and gain registers. |
| Schmitt-triggered SCL inputs | Rejects fast transients and improves timing margin in electrically noisy industrial or automotive PCB layouts. |
| Hardware write protection (WP) | Prevents firmware corruption during brown-out or reset sequences by disabling writes without software intervention. |
| 100-year data retention | Eliminates need for periodic refresh or backup power in sealed, maintenance-free deployments like smart utility meters. |
Applications
| Smart Sensor Node | Industrial PLC Module |
|---|---|
Use Scenario: Storing factory-calibrated temperature/humidity coefficients and unique device identifiers in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with infrequent writes and frequent reads over I²C; no real-time timing role. Use Value: Enables field-replaceable sensor units with persistent calibration data across power cycles and firmware updates. |
Use Scenario: Holding I/O mapping tables, alarm thresholds, and user-defined logic state in modular programmable logic controller backplanes. IC Role / Device Role / Timing Role: Persistent parameter storage accessed during boot and runtime reconfiguration; no clock generation or timing function. Use Value: Supports hot-swap module identification and retains operational settings through power loss or firmware reloads. |
| Medical Wearable | Consumer Remote Control |
Use Scenario: Saving patient-specific therapy profiles and usage history in portable ECG or glucose monitoring patches. IC Role / Device Role / Timing Role: Secure, low-power data logger for infrequent parameter writes and occasional read-back; no time-critical interface. Use Value: Meets medical device regulatory requirements for data integrity and retention without adding battery load or complexity. |
Use Scenario: Storing IR code learning history, button remapping, and power-on defaults in universal remote controls. IC Role / Device Role / Timing Role: Configuration memory accessed only during setup or recovery; no involvement in IR transmission timing. Use Value: Allows end-user customization persistence across battery replacement and firmware resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02D-SSHM-T | Same 2 Kbit capacity and 1.8 V operation, but in 8-lead TSSOP (8T) package; slightly smaller footprint and lower profile. | TSSOP suits space-constrained designs where SOIC thermal mass or height is problematic. | Select AT24C02D-SSHM-T if board area or Z-height is critical; verify solder paste volume and reflow profile for TSSOP. |
| M24C02-RMN6TP | STMicroelectronics 2 Kbit EEPROM; identical 1.8–5.5 V range and 100 kHz I²C speed at 1.8 V, but rated for extended -40°C to +105°C operation. | Better suited for under-hood automotive or outdoor industrial enclosures exceeding +85°C ambient. | Choose M24C02-RMN6TP when operating temperature exceeds +85°C; note different device address mapping (A0/A1 only). |
Compared with AT24C02N-10SC-1.8, AT24C02D-SSHM-T offers identical electrical behavior in a smaller package, while M24C02-RMN6TP extends temperature range at the cost of minor address pin compatibility differences-both require validation of WP pin behavior and page write timing in target firmware.
Availability
AT24C02N-10SC-1.8 is available at Aetrix Electronics and suitable for battery-powered IoT sensors, industrial PLC modules, medical wearables, and consumer remote controls requiring stable component supply across multi-year production cycles.
Supply support for AT24C02N-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 support, qualification, and manufacturing continuity for the AT24C series EEPROMs.
The AT24C02N-10SC-1.8 belongs to Microchip's legacy serial EEPROM product line, designed specifically for reliable, low-voltage nonvolatile storage in resource-constrained embedded systems.
FAQ
What is the maximum I²C clock frequency supported by AT24C02N-10SC-1.8 at 1.8 V?
The AT24C02N-10SC-1.8 supports up to 100 kHz I²C clock frequency when operated at 1.8 V. This is specified in the AC Characteristics table under fSCL for 1.8 V operation. Higher frequencies (e.g., 400 kHz) require VCC ≥ 2.7 V. The 100 kHz limit ensures timing margins for rise/fall times and noise immunity in low-voltage systems.
Does AT24C02N-10SC-1.8 support partial page writes?
Yes, AT24C02N-10SC-1.8 supports partial page writes within its 8-byte pages. After initiating a page write, the internal address counter increments automatically, allowing up to eight sequential bytes to be written-even if fewer than eight are sent. This enables efficient updates of non-contiguous register sets without splitting transactions.
How does the Write Protect (WP) pin function on AT24C02N-10SC-1.8?
On AT24C02N-10SC-1.8, the WP pin provides hardware-level write protection: when tied to VCC, it disables all write operations to the entire 2 Kbit array; when grounded, normal read/write access is enabled. This prevents inadvertent writes during power transitions or firmware errors without requiring software commands.
What package type is used for AT24C02N-10SC-1.8?
AT24C02N-10SC-1.8 uses an 8-lead JEDEC SOIC package (designated 8S1), 0.150" wide, with gull-wing leads and 1.27 mm pitch. This is confirmed in the AT24C02 Ordering Information table and Packaging Information section, distinguishing it from PDIP (8P3) and TSSOP (8T) variants.
Is AT24C02N-10SC-1.8 compatible with standard I²C protocol?
Yes, AT24C02N-10SC-1.8 fully complies with standard I²C protocol: it responds to 7-bit slave addresses (with A2–A0 bits), acknowledges with ACK after each byte, supports START/STOP conditions, and implements clock stretching only during internal write cycles-not during read or address phases.
AT24C02N-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
AT24C02N-10SC-1.8 FAQ
1.How can I place an order for AT24C02N-10SC-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02N-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 AT24C02N-10SC-1.8 reliable?
The price and inventory of AT24C02N-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 AT24C02N-10SC-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C02N-10SC-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02N-10SC-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02N-10SC-1.8?
AT24C02N-10SC-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02N-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 AT24C02N-10SC-1.8?
For technical support, including AT24C02N-10SC-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02N-10SC-1.8 requirements.
6.How does Aetrix verify that AT24C02N-10SC-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C02N-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 AT24C02N-10SC-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C02N-10SC-1.8?
All AT24C02N-10SC-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02N-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 AT24C02N-10SC-1.8 part is unused and in its original packaging.
Return procedure for AT24C02N-10SC-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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