My Inquiry
My Account
Microchip Technology AT24C02-10PI-2.5
- Part No.:
- AT24C02-10PI-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C02-10PI-2.5.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,796
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT24C02-10PI-2.5 from Microchip Technology (formerly Atmel) is a 2K-bit (256 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 2.5V to 5.5V, supports 100 kHz I²C bus speed, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention. It is widely used in industrial sensor calibration storage and power-meter firmware parameter backup.
For engineers reviewing the AT24C02-10PI-2.5 datasheet, AT24C02-10PI-2.5 pinout, AT24C02-10PI-2.5 application, or AT24C02-10PI-2.5 equivalent, this page provides verified electrical specifications, industrial-grade temperature support (−40°C to +85°C), JEDEC SOIC-8 package details, and real-world design context for reliable integration into battery-powered and space-constrained systems.
Technical Context
The AT24C02-10PI-2.5 implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs. Its internal memory is organized as 32 pages of 8 bytes each, requiring an 8-bit word address for random access and supporting both byte-write and 8-byte page-write operations.
It uses hard-wired A0–A2 device address pins to enable up to eight devices on a single I²C bus. The WP pin provides hardware-level write protection-asserting it high disables all write operations across the full 2K array, while grounding it enables normal read/write functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8 bits), sufficient for storing configuration registers, calibration coefficients, or small firmware patches |
| Supply Voltage Range | 2.5V to 5.5V - supports direct interfacing with 2.5V logic domains and backward compatibility with 3.3V/5V systems |
| I²C Clock Frequency | 100 kHz max at 2.5V - ensures robust timing margin in noisy industrial environments with long trace lengths |
| Write Cycle Time | 10 ms maximum - defines minimum interval between successive write commands; impacts firmware update latency |
| Endurance | 1 million write cycles - enables daily reconfiguration over 27 years without wear-out failure |
| Data Retention | 100 years at 25°C - guarantees nonvolatile storage integrity across product lifecycle without refresh |
| Operating Temperature | −40°C to +85°C - qualified for industrial control panels, smart meters, and outdoor IoT edge nodes |
Pinout & Package
AT24C02-10PI-2.5 is supplied in an 8-lead JEDEC-standard SOIC (8S1) package - 0.150" wide, gull-wing surface-mount outline measuring 4.98 mm × 3.99 mm × 1.75 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired LSB of 3-bit device address; enables multi-drop I²C bus configuration (up to 8 devices) |
| A1 | Device Address Input | Mid-bit of device address; must match external pull-up/pull-down to select unique I²C slave address |
| A2 | Device Address Input | MSB of device address; determines position within 0x50–0x57 I²C address range |
| GND | Ground Reference | Return path for VCC and signal currents; requires low-impedance connection to minimize noise coupling |
| VCC | Power Supply | Primary supply input (2.5V–5.5V); bypass capacitor (0.1 µF) required near pin for I²C noise immunity |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC to freeze memory contents during system boot or fault conditions |
| SCL | I²C Clock Input | Input-only clock line; open-drain compatible; requires external pull-up resistor (typically 4.7 kΩ) |
| SDA | I²C Data I/O | Bi-directional open-drain data line; shared across multiple I²C slaves; requires same pull-up as SCL |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation down to 2.5V | Enables direct integration with 2.5V microcontrollers and energy-harvesting subsystems without level-shifting |
| Hardware write protection (WP pin) | Prevents accidental overwrites during power transients or firmware glitches - no software dependency required |
| 8-byte page write capability | Reduces I²C transaction overhead by up to 8× vs. byte-write mode, accelerating bulk parameter updates |
| Schmitt-trigger, filtered inputs | Rejects >100 ns noise spikes on SDA/SCL, eliminating false start/stop detection in electrically noisy enclosures |
| Industrial temperature grade (−40°C to +85°C) | Validated for continuous operation in uncontrolled ambient environments such as factory floors and utility substations |
Applications
| Smart Energy Metering | Industrial Sensor Calibration |
|---|---|
Use Scenario: Storing tariff schedules, meter ID, and accumulated kWh values in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration and measurement history storage with guaranteed data integrity across 10+ year field deployment. Use Value: Eliminates need for battery-backed SRAM; retains critical billing data during main power loss without supervision. |
Use Scenario: Holding factory-trimmed offset/gain coefficients for analog temperature and pressure sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Persistent calibration parameter repository accessed at system startup and during field recalibration routines. Use Value: Enables plug-and-play sensor replacement with zero manual setup; maintains measurement accuracy across temperature extremes. |
| Embedded System Boot Configuration | IoT Edge Node State Storage |
Use Scenario: Saving user-selected communication settings (baud rate, protocol mode) and hardware options in medical diagnostic equipment. IC Role / Device Role / Timing Role: Static configuration store mapped at MCU boot time; read once per power cycle. Use Value: Allows field technicians to reconfigure devices without firmware reflashing or service visits. |
Use Scenario: Caching last known sensor readings and network credentials in battery-powered environmental monitors deployed in remote locations. IC Role / Device Role / Timing Role: Low-power state keeper that survives brownouts and extended sleep modes between transmission bursts. Use Value: Prevents data loss during intermittent connectivity; reduces wake-up current by avoiding repeated sensor initialization. |
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 | 2K-bit I²C EEPROM, 1.7V–5.5V supply, 400 kHz max clock at 5V only; no 100 kHz guarantee below 2.5V | Requires voltage translation for stable 100 kHz operation at 2.5V; lacks explicit industrial temp validation | Select if higher-speed operation at 5V is prioritized and 2.5V timing margin is not critical |
| BR24G02NUX-10 | 2K-bit I²C EEPROM, 1.6V–5.5V, built-in write protect register (software-controlled), no dedicated WP pin | Relies on firmware to manage write lock state; vulnerable to corruption during reset or code faults | Choose when flexible software-based protection suffices and pin count is constrained |
Compared with M24C02-RMN6TP and BR24G02NUX-10, the AT24C02-10PI-2.5 offers guaranteed 100 kHz I²C timing at 2.5V, hardware-enforced write protection independent of firmware state, and full industrial temperature qualification - making it optimal for safety-critical and maintenance-free deployments.
Availability
AT24C02-10PI-2.5 is available at Aetrix Electronics and suitable for industrial automation, smart metering, and embedded medical devices requiring stable component supply across extended product lifecycles.
Supply support for AT24C02-10PI-2.5 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 components, and nonvolatile memory solutions, with a focus on reliability and long-term product support.
The AT24Cxx family was designed specifically for cost-sensitive, low-power embedded systems needing trusted, pin-compatible serial EEPROM across voltage and temperature grades - enabling scalable BOM reuse from consumer to industrial designs.
FAQ
What is the maximum I²C clock frequency supported by AT24C02-10PI-2.5 at 2.5V?
The AT24C02-10PI-2.5 supports a maximum I²C clock frequency of 100 kHz when operating at 2.5V. This is explicitly specified in the AC Characteristics table under "2.7-, 2.5-, 1.8-volt" conditions. Higher frequencies (e.g., 400 kHz) are only guaranteed at VCC ≥ 4.5V. Designers must respect this limit to ensure reliable communication in low-voltage applications.
Does AT24C02-10PI-2.5 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C02-10PI-2.5 requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed requirements. The absence of internal pull-ups means omission will result in complete I²C bus failure.
How does the WP pin function on AT24C02-10PI-2.5?
On AT24C02-10PI-2.5, the WP (Write Protect) pin is active-high: when tied to VCC, it disables all write operations to the entire 2K memory array; when grounded, normal read/write functionality is enabled. This hardware lock operates independently of I²C commands and remains effective during power transitions.
What package type is used for AT24C02-10PI-2.5?
AT24C02-10PI-2.5 uses the 8-lead JEDEC SOIC (8S1) package - a 0.150"-wide gull-wing surface-mount outline measuring 4.98 mm × 3.99 mm. The "I" suffix denotes industrial temperature grade (−40°C to +85°C), and "-2.5" specifies guaranteed operation from 2.5V to 5.5V.
Can AT24C02-10PI-2.5 be used in place of AT24C02-10PI?
Yes, AT24C02-10PI-2.5 is a functional and pin-compatible upgrade to AT24C02-10PI. Both share identical pinout, timing, and command structure. The "-2.5" suffix adds guaranteed 2.5V–5.5V operation, whereas the base AT24C02-10PI is rated only for 4.5V–5.5V. No PCB or firmware changes are needed for migration.
AT24C02-10PI-2.5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C02-10PI-2.5 FAQ
1.How can I place an order for AT24C02-10PI-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02-10PI-2.5 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 AT24C02-10PI-2.5 reliable?
The price and inventory of AT24C02-10PI-2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02-10PI-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C02-10PI-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02-10PI-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02-10PI-2.5?
AT24C02-10PI-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02-10PI-2.5 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 AT24C02-10PI-2.5?
For technical support, including AT24C02-10PI-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02-10PI-2.5 requirements.
6.How does Aetrix verify that AT24C02-10PI-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C02-10PI-2.5 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 AT24C02-10PI-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C02-10PI-2.5?
All AT24C02-10PI-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02-10PI-2.5, 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 AT24C02-10PI-2.5 part is unused and in its original packaging.
Return procedure for AT24C02-10PI-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C02-10PI-2.5 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…
