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Microchip Technology AT24C02D-CUM-T
- Part No.:
- AT24C02D-CUM-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFBGA
- Datasheet:
-
AT24C02D-CUM-T.pdf
- Description:
- IC EEPROM 2KBIT I2C 1MHZ 8VFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,546
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Product details
Overview
AT24C02D-CUM-T from Microchip Technology is a 2-Kbit (256 × 8) I²C-compatible serial EEPROM in an 8-pad UDFN package, operating from 1.7V to 3.6V with industrial temperature range (−40°C to +85°C), 1 MHz Fast Mode Plus support, and hardware write protection via WP pin - used for nonvolatile parameter storage in embedded control modules, sensor calibration registers, and power-management configuration.
For engineers reviewing the AT24C02D-CUM-T datasheet, AT24C02D-CUM-T pinout, AT24C02D-CUM-T application, or AT24C02D-CUM-T equivalent, key selection considerations include voltage compatibility (1.7–3.6 V), page-write capability (8-byte pages), write endurance (1M cycles), data retention (100 years), and I²C bus timing compliance across Standard/Fast/Fast Mode Plus modes.
Technical Context
The AT24C02D-CUM-T functions as an I²C slave device with fixed 7-bit address prefix 1010b and three programmable address bits (A2–A0), enabling up to eight devices on one bus. It implements Schmitt-trigger inputs and spike filtering on SDA/SCL for robust noise immunity in electrically noisy environments.
Internally organized as 32 pages of 8 bytes each, it supports byte-write, page-write (with partial-page capability), random read, and sequential read. Write operations are self-timed with ≤5 ms maximum cycle time and include hardware write protection via the dedicated WP pin tied to VCC or GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8 bits), sufficient for storing firmware configuration, calibration coefficients, or device identity data in space-constrained designs. |
| Supply Voltage | 1.7 V to 3.6 V - enables direct interface with 1.8 V and 3.3 V microcontrollers without level shifting. |
| I²C Speed Modes | Supports 100 kHz (Standard), 400 kHz (Fast), and 1 MHz (Fast Mode Plus) - allows flexible timing budget allocation in mixed-speed I²C systems. |
| Write Endurance | 1,000,000 write cycles - ensures reliable field operation over product lifetime in applications requiring frequent updates (e.g., energy metering logs). |
| Data Retention | 100 years at 55°C - guarantees long-term integrity of stored settings without battery backup. |
| Standby Current | Max 0.8 μA at 3.6 V - minimizes system quiescent power in always-on or battery-powered edge nodes. |
| Operating Temp | −40°C to +85°C - qualified for industrial and automotive under-hood auxiliary modules. |
Pinout & Package
AT24C02D-CUM-T is housed in an 8-pad UDFN (Ultra Thin DFN) package with wettable flanks, measuring 2.0 mm × 1.6 mm × 0.55 mm, suitable for automated optical inspection (AOI) and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired to GND or VCC to configure one of eight possible I²C slave addresses; internally pulled down if floating. |
| A1 | Device Address Input | Second address bit; enables multi-device addressing on shared I²C bus without software conflict. |
| A2 | Device Address Input | Third address bit; combined with A1/A0, defines full 3-bit hardware address for bus arbitration. |
| GND | Ground Reference | System return path for VCC and signal logic; must be low-impedance connection to minimize noise coupling. |
| SDA | Serial Data Line | Open-drain bidirectional I²C data line requiring external pull-up resistor (≤10 kΩ); supports wire-OR with other slaves. |
| SCL | Serial Clock Line | Input-only clock line driven by master; requires external pull-up; rising edge latches input, falling edge outputs data. |
| WP | Write-Protect Control | Hardware lock: tied to VCC disables all writes to entire memory array; tied to GND enables normal write access. |
| VCC | Power Supply | Primary supply rail (1.7–3.6 V); must ramp monotonically at ≤0.1 V/µs during power-up to ensure reliable POR behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Fast Mode Plus Support | 1 MHz I²C operation at 2.5–3.6 V enables faster configuration loading versus legacy 400 kHz EEPROMs, reducing boot-time latency. |
| 8-Byte Page Write | Allows burst programming of up to 8 bytes per write cycle, improving efficiency when updating contiguous configuration blocks. |
| Schmitt Trigger Inputs | Enhances noise immunity on SDA/SCL lines in EMI-prone environments such as motor drives or power supplies. |
| Hardware Write Protection | Dedicated WP pin provides fail-safe, non-software-dependent memory locking - critical for safety-critical or regulatory-compliant firmware parameters. |
| Green Packaging | RoHS-compliant, halide-free, lead-free UDFN package meets environmental compliance requirements for global electronics manufacturing. |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
Use Scenario: Storing calibrated offset/gain values and sensor ID after factory trim. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during power-up initialization via I²C. Use Value: Eliminates need for external trimming components and enables field recalibration with persistent storage across power cycles. | Use Scenario: Recording tariff schedules, billing counters, and tamper-event logs. IC Role / Device Role / Timing Role: Secure, low-power parameter and event log storage synchronized to metrology IC interrupts. Use Value: 1M write cycles and 100-year retention guarantee accuracy and auditability over 20+ year meter lifetime. |
| Automotive Body Control Module | IoT Edge Gateway |
Use Scenario: Saving user preferences (mirror position, seat memory) and diagnostic trouble codes (DTCs). IC Role / Device Role / Timing Role: I²C slave storing infrequently updated but mission-critical state data. Use Value: −40°C to +85°C rating and hardware WP ensure reliability in vehicle cabin environments with thermal cycling. | Use Scenario: Holding Wi-Fi credentials, firmware update flags, and OTA certificate fingerprints. IC Role / Device Role / Timing Role: Secure boot-time configuration store accessed before main application starts. Use Value: Ultra-low standby current (0.8 μA) extends battery life in battery-backed or energy-harvested gateway deployments. |
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 | 2-Kbit I²C EEPROM in 8-lead SOIC; same voltage range and timing, but larger SOIC-8 footprint (4.9 × 6.0 mm vs. UDFN 2.0 × 1.6 mm). | Lacks wettable flanks; less suitable for AOI and high-density layouts where AT24C02D-CUM-T's UDFN is preferred. | Select M24C02-RMN6TP only when board layout accommodates SOIC-8 and reflow profile doesn't require wettable flank verification. |
| BR24G02NUX-10 | Rohm 2-Kbit I²C EEPROM in 8-pin UDFN (2.0 × 1.6 mm); supports 1.7–5.5 V, but no Fast Mode Plus (max 400 kHz). | Higher VCC range offers flexibility with 5 V systems, but slower I²C limits throughput in time-critical boot sequences. | Choose BR24G02NUX-10 only if 5 V compatibility is required and 400 kHz I²C speed suffices for the use case. |
Compared with M24C02-RMN6TP and BR24G02NUX-10, AT24C02D-CUM-T uniquely combines ultra-compact UDFN packaging, 1 MHz Fast Mode Plus support, and guaranteed 1.7–3.6 V operation - making it optimal for miniaturized, high-speed, low-voltage embedded systems where board area and boot-time efficiency are constrained.
Availability
AT24C02D-CUM-T is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and automotive body control modules requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT24C02D-CUM-T 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 leading provider of microcontrollers, analog devices, and memory solutions, with a focus on embedded control and connectivity.
The AT24CxxD series is designed specifically for low-voltage, low-power I²C-based nonvolatile storage in space-constrained industrial and commercial systems - emphasizing reliability, noise immunity, and seamless integration with 1.8 V/3.3 V MCUs.
FAQ
What is the memory organization of the AT24C02D-CUM-T?
The AT24C02D-CUM-T contains 2,048 bits organized as 256 words of 8 bits each, internally structured into 32 pages of 8 bytes. This layout enables efficient page-write operations and supports both random and sequential read access patterns required in configuration storage applications.
Does the AT24C02D-CUM-T support 1 MHz I²C communication?
Yes, the AT24C02D-CUM-T supports Fast Mode Plus (FM+) at up to 1 MHz, but only when VCC is between 2.5 V and 3.6 V. At lower voltages (1.7–2.5 V), it operates in Fast Mode (400 kHz) or Standard Mode (100 kHz), ensuring backward compatibility across diverse supply conditions.
How does the write-protect (WP) pin function on the AT24C02D-CUM-T?
When the WP pin is driven high (to VCC), the AT24C02D-CUM-T disables all write operations to its entire memory array. When pulled low (to GND), normal write access is enabled. If left floating, WP is internally pulled down - but Microchip recommends hardwiring it to avoid unintended writes due to capacitive coupling.
What is the maximum write cycle time for the AT24C02D-CUM-T?
The AT24C02D-CUM-T has a maximum self-timed write cycle time of 5 ms, applicable to both byte and page writes. During this period, the device does not acknowledge I²C commands until the internal write completes - requiring host firmware to implement acknowledge polling or fixed-delay recovery.
Is the AT24C02D-CUM-T compatible with standard I²C protocol?
Yes, the AT24C02D-CUM-T is fully I²C-compatible, supporting standard Start/Stop conditions, 7-bit addressing with 1010b prefix, ACK/NACK handshaking, and bidirectional data transfer. It complies with I²C-bus specification timing requirements for Standard, Fast, and Fast Mode Plus modes as defined in its datasheet.
AT24C02D-CUM-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 4.5 µs
- Voltage - Supply:
- 1.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VFBGA (1.5x2)
AT24C02D-CUM-T FAQ
1.How can I place an order for AT24C02D-CUM-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02D-CUM-T 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 AT24C02D-CUM-T reliable?
The price and inventory of AT24C02D-CUM-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02D-CUM-T is usually 5 days.
3.What payment methods are accepted for AT24C02D-CUM-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02D-CUM-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02D-CUM-T?
AT24C02D-CUM-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02D-CUM-T 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 AT24C02D-CUM-T?
For technical support, including AT24C02D-CUM-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02D-CUM-T requirements.
6.How does Aetrix verify that AT24C02D-CUM-T is sourced from the original manufacturer or authorized distributors?
All AT24C02D-CUM-T 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 AT24C02D-CUM-T meets industry standards.
7.What is the process for return or replacement of AT24C02D-CUM-T?
All AT24C02D-CUM-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02D-CUM-T, 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 AT24C02D-CUM-T part is unused and in its original packaging.
Return procedure for AT24C02D-CUM-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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