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Microchip Technology AT24C08A-10PC-2.5
- Part No.:
- AT24C08A-10PC-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C08A-10PC-2.5.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,632
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Product details
Overview
AT24C08A-10PC-2.5 from Microchip Technology (formerly Atmel) is an 8K-bit (1024 × 8) I²C-compatible serial EEPROM with hardware write protection, low-voltage operation (2.5V to 5.5V), and 100 kHz clock compatibility at 2.5V. It features 16-byte page write capability, 1 million write cycles endurance, and 100-year data retention - deployed in industrial control panels, smart metering firmware storage, and automotive body control modules for nonvolatile parameter retention.
For engineers reviewing the AT24C08A-10PC-2.5 datasheet, AT24C08A-10PC-2.5 pinout, AT24C08A-10PC-2.5 application, or AT24C08A-10PC-2.5 equivalent, key selection considerations include its 2.5V minimum supply, A2-only device addressing (A0/A1 = NC), WP-enabled hardware lock, 8-pin PDIP package, and 10 ms max self-timed write cycle - critical for power-constrained embedded systems requiring robust configuration storage.
Technical Context
The AT24C08A-10PC-2.5 implements a 2-wire I²C interface with Schmitt-triggered, noise-filtered SDA/SCL inputs and open-drain bidirectional data transfer. Its internal memory is organized into 4 blocks of 256 pages × 4 bytes, requiring a 10-bit word address for random access.
Write protection is enforced via the WP pin: when tied to VCC, full 8K array protection is active; when grounded, normal read/write operations proceed. Device addressing uses only the A2 pin (A0 and A1 are no-connect), enabling up to two AT24C08A devices on a single bus.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8192 bits (1024 × 8), supporting firmware calibration tables and device-specific configuration data |
| Supply Voltage Range | 2.5V to 5.5V - enables direct integration with 2.5V logic domains without level shifting |
| I²C Clock Frequency | 100 kHz at 2.5V - ensures reliable timing margin in noisy industrial environments |
| Page Write Capacity | 16-byte pages - reduces write transaction overhead vs. byte-wise programming |
| Write Cycle Time | 10 ms maximum - defines minimum interval between write commands; impacts system responsiveness |
| Endurance | 1 million write cycles - supports frequent field-updatable parameters over product lifetime |
| Data Retention | 100 years at +25°C - guarantees long-term integrity of stored calibration or license keys |
| ESD Protection | >3000V HBM - enhances robustness during board handling and in-circuit programming |
Pinout & Package
AT24C08A-10PC-2.5 is supplied in an 8-pin PDIP (Plastic Dual Inline Package), 0.300" wide, with lead pitch 0.100" (2.54 mm). Pin 1 is marked by notch or dot; package meets JEDEC MS-001 BA standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | No-connect (NC) for AT24C08A - unused; must be left floating or tied to GND/VCC per layout constraints |
| A1 | Device Address Input | No-connect (NC) for AT24C08A - unused; must be left floating or tied to GND/VCC per layout constraints |
| A2 | Device Address Input | Hard-wired address bit - selects one of two possible AT24C08A addresses on shared I²C bus |
| GND | Ground Reference | Return path for all internal circuitry and I/O; requires low-impedance connection to system ground plane |
| VCC | Power Supply | 2.5V–5.5V input - powers EEPROM core and I/O buffers; decoupling capacitor (0.1 µF) required near pin |
| WP | Write Protect Control | Active-high hardware lock - prevents accidental writes when pulled to VCC; enables safe field updates |
| SCL | Serial Clock Input | Positive-edge sampled clock - synchronizes all I²C transactions; requires external pull-up resistor (typically 4.7 kΩ) |
| SDA | Serial Data I/O | Bidirectional open-drain line - shared across multiple I²C devices; requires same external pull-up as SCL |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin enables full-array lock without software intervention - essential for safety-critical parameter storage |
| Low-Voltage Operation | 2.5V minimum supply allows direct interfacing with 2.5V microcontrollers and FPGAs - eliminates level translators |
| 16-Byte Page Writes | Reduces I²C transaction count by up to 15× vs. byte writes - lowers bus occupancy and improves update throughput |
| 100-Year Data Retention | Validated at +25°C - ensures calibration coefficients and serial numbers remain intact over full product lifecycle |
| Noise-Resilient Inputs | Schmitt-trigger + filtering on SDA/SCL - suppresses EMI-induced glitches in factory automation or motor drive environments |
| Single-Bus Multi-Device Support | A2-only addressing allows two AT24C08A-10PC-2.5 units on one I²C bus - simplifies multi-sensor node designs |
Applications
| Industrial PLC Configuration Storage | Smart Energy Meter Firmware Backup |
|---|---|
Use Scenario: Storing calibrated sensor offsets, communication protocol settings, and event log thresholds in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile configuration register - retains values across power cycles and withstands temperature cycling from −40°C to +85°C. Use Value: Eliminates need for battery-backed SRAM; 1M write cycles support daily recalibration without wear-out risk. |
Use Scenario: Backing up meter firmware patches, tariff tables, and cryptographic keys in ANSI C12.22-compliant utility meters with intermittent power. IC Role / Device Role / Timing Role: Secure boot parameter store - accessed during cold start before main MCU initializes flash controller. Use Value: WP pin prevents corruption during brown-out events; 2.5V operation aligns with meter's low-power RTC domain. |
| Automotive Body Control Module (BCM) | Medical Infusion Pump Calibration Memory |
Use Scenario: Holding seat position presets, mirror angle maps, and lighting profiles in 12V automotive BCMs with transient-suppressed power rails. IC Role / Device Role / Timing Role: Persistent user preference storage - survives ignition-off periods and load-dump transients. Use Value: 3000V HBM ESD rating withstands assembly-line handling; 100-year retention avoids recalibration during vehicle service life. |
Use Scenario: Storing flow-rate calibration coefficients, drug library metadata, and usage audit logs in Class IIa infusion pumps requiring traceable parameter history. IC Role / Device Role / Timing Role: FDA-regulated configuration archive - written once during factory calibration, read frequently during operation. Use Value: Full-array WP lock prevents runtime overwrite; 10 ms write time fits within pump's watchdog timeout window. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95M01-RMN6TP | 1 Mbit SPI interface, 2.5–5.5V, 5 MHz max clock - no I²C compatibility | Requires SPI-capable host; higher bandwidth but different protocol stack | Select if host lacks I²C or needs faster sequential reads |
| 24LC08BT-I/P | Same 8K-bit I²C EEPROM, 2.5–5.5V, but in 8-pin PDIP with −40°C to +85°C industrial temp grade | Identical pinout and function; broader temperature range than AT24C08A-10PC-2.5 (0°C to 70°C) | Choose for extended-temperature deployments without redesign |
Compared with M95M01-RMN6TP and 24LC08BT-I/P, the AT24C08A-10PC-2.5 offers guaranteed I²C compatibility and commercial-grade cost optimization, while 24LC08BT-I/P extends operational reliability to industrial ambient conditions - making it preferable for outdoor or under-hood applications.
Availability
AT24C08A-10PC-2.5 is available at Aetrix Electronics and suitable for industrial control systems, smart metering infrastructure, and automotive body electronics requiring stable component supply across multi-year production cycles.
Supply support for AT24C08A-10PC-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 acquired Atmel in 2016 and maintains full technical and manufacturing continuity for the AT24CxxA EEPROM family. The company specializes in secure, low-power microcontrollers and nonvolatile memory solutions.
The AT24C08A-10PC-2.5 belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, space-constrained embedded systems needing reliable, low-voltage configuration storage with minimal external components.
FAQ
What is the operating temperature range for AT24C08A-10PC-2.5?
The AT24C08A-10PC-2.5 is rated for commercial operation from 0°C to +70°C. It is not qualified for industrial (−40°C to +85°C) or automotive temperature ranges. For extended-temperature use, consider the AT24C08A-10PI-2.5 variant or compatible alternatives like 24LC08BT-I/P.
Does AT24C08A-10PC-2.5 support 400 kHz I²C communication?
No - AT24C08A-10PC-2.5 is specified for 100 kHz maximum I²C clock frequency at 2.5V supply. The 400 kHz speed grade applies only to 5.0V operation (e.g., AT24C08A-10PC). Attempting 400 kHz at 2.5V violates AC timing specifications and may cause communication failures.
How is device addressing configured on AT24C08A-10PC-2.5?
AT24C08A-10PC-2.5 uses only the A2 pin for hardware device addressing; A0 and A1 are no-connect. This allows two devices (A2 = GND or VCC) on the same I²C bus. The base 7-bit address is 0x50, with A2 contributing the LSB - resulting in addresses 0x50 or 0x51.
What happens when the WP pin is left unconnected on AT24C08A-10PC-2.5?
An unconnected WP pin is undefined and may float high due to internal leakage or noise, potentially enabling unintended write protection. For reliable operation, WP must be explicitly tied to either GND (for full read/write access) or VCC (to lock the entire 8K array) using a hard-wired connection or pull-up/down resistor.
Can AT24C08A-10PC-2.5 replace AT24C08A-10PC in an existing design?
Yes - AT24C08A-10PC-2.5 is a direct voltage-range variant of AT24C08A-10PC, sharing identical pinout, timing, and functionality. The "-2.5" suffix denotes 2.5V–5.5V operation instead of 4.5V–5.5V. No PCB changes are needed, but verify that system VCC remains ≥2.5V during all operating modes.
AT24C08A-10PC-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:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 4.5 µs
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C08A-10PC-2.5 FAQ
1.How can I place an order for AT24C08A-10PC-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08A-10PC-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 AT24C08A-10PC-2.5 reliable?
The price and inventory of AT24C08A-10PC-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 AT24C08A-10PC-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C08A-10PC-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08A-10PC-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08A-10PC-2.5?
AT24C08A-10PC-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08A-10PC-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 AT24C08A-10PC-2.5?
For technical support, including AT24C08A-10PC-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08A-10PC-2.5 requirements.
6.How does Aetrix verify that AT24C08A-10PC-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C08A-10PC-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 AT24C08A-10PC-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C08A-10PC-2.5?
All AT24C08A-10PC-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08A-10PC-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 AT24C08A-10PC-2.5 part is unused and in its original packaging.
Return procedure for AT24C08A-10PC-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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