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Microchip Technology AT24C08-10PI
- Part No.:
- AT24C08-10PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C08-10PI.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,474
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Product details
Overview
AT24C08-10PI from Microchip Technology (formerly Atmel) is an 8K-bit (1024 × 8) serial EEPROM with I²C-compatible 2-wire interface, operating from 2.7V to 5.5V, featuring 10 ms max self-timed write cycle, 1 million write endurance, and 100-year data retention. It serves as nonvolatile configuration storage in microcontroller-based systems requiring industrial temperature support (–40°C to +85°C).
For engineers reviewing the AT24C08-10PI datasheet, AT24C08-10PI pinout, AT24C08-10PI application, or AT24C08-10PI equivalent, key selection criteria include its 2.7V–5.5V supply range, 16-byte page write capability, hardware write protection via WP pin, Schmitt-trigger inputs for noise immunity, and compatibility with standard I²C bus timing at up to 400 kHz.
Technical Context
The AT24C08-10PI implements a fixed 8K-bit memory array organized as 64 pages of 16 bytes each, requiring a 10-bit data word address for random access. Its I²C protocol supports byte and page writes, current/random/sequential reads, and acknowledge polling during internal write cycles.
Device addressing uses only the A2 pin (A0 and A1 are NC), enabling up to two AT24C08 devices on a single bus. The WP pin provides hardware-level write protection for the entire upper half (4K) of the memory array when pulled high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8192 bits (1024 × 8), organized as 64 pages × 16 bytes - enables efficient firmware parameter storage with page-aligned updates. |
| Supply Voltage Range | 2.7V to 5.5V - supports direct interfacing with 3.3V and 5V microcontrollers without level shifting. |
| I²C Clock Frequency | Up to 400 kHz at 5V; 100 kHz at 2.7V - ensures reliable communication across voltage grades while meeting standard Fast-mode timing. |
| Write Cycle Time | Max 10 ms - defines minimum interval between write commands; requires polling or timeout handling in host firmware. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - suitable for field-updatable calibration tables and infrequent configuration changes. |
| Operating Temperature | –40°C to +85°C - certified for industrial environments including motor drives, PLCs, and outdoor metering equipment. |
| Input Filtering | Schmitt-trigger inputs with 100 ns noise suppression - rejects EMI in electrically noisy industrial PCB layouts. |
Pinout & Package
AT24C08-10PI is supplied in an 8-pin PDIP (package code 8P3), with 0.300" body width and through-hole mounting. Pin 1 is marked by a notch or dot; leads are tin-lead plated per JEDEC MS-001BA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect | Not bonded internally; must be left unconnected - prevents accidental device address conflict. |
| A1 | No Connect | Not bonded internally; must be left unconnected - ensures correct 2-device addressing using only A2. |
| A2 | Device Address Input | Hardwired address bit; selects one of two possible addresses (0 or 1) on shared I²C bus. |
| GND | Ground Reference | System common return path; must be low-impedance to minimize ground bounce during write cycles. |
| VCC | Power Supply | 2.7–5.5V main supply; decoupling capacitor (0.1 µF ceramic) required within 1 cm of pin. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC disables all writes to upper 4K; tied to GND enables full read/write. |
| SCL | Serial Clock Input | Open-drain input synchronized to host MCU clock; requires external pull-up (typically 2.2–10 kΩ to VCC). |
| SDA | Serial Data I/O | Open-drain bidirectional line; shares pull-up with SCL; supports multi-master arbitration and clock stretching. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin disables writes to upper 4K of memory when asserted - prevents corruption of critical firmware parameters during power transients. |
| 16-byte Page Write Mode | Enables burst programming of aligned 16-byte blocks - reduces I²C transaction overhead by 87.5% vs. byte-by-byte writes. |
| Schmitt-trigger Inputs | Provides hysteresis on SCL/SDA/A2/WP pins - eliminates false triggering from slow-rising or noisy signals in long-trace or high-EMI environments. |
| Industrial Temperature Grade | Rated –40°C to +85°C - validated for operation in extended thermal zones such as enclosed industrial enclosures or automotive under-hood proximity. |
| Low Standby Current | Max 4.0 µA at 2.7V - minimizes battery drain in always-on IoT edge nodes and portable instrumentation. |
Applications
| Smart Energy Metering | Industrial PLC Configuration |
|---|---|
Use Scenario: Storing tariff schedules, calibration coefficients, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed via I²C during boot and runtime; retains data across mains outages. Use Value: Enables field-upgradable billing logic and metrology traceability without requiring external backup power or supercapacitors. |
Use Scenario: Holding I/O mapping tables, PID tuning constants, and safety interlock states in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent configuration register bank; updated only during commissioning or firmware update, not during scan cycle. Use Value: Guarantees deterministic startup behavior after power loss and supports hot-swap module reconfiguration without EEPROM reprogramming. |
| Medical Diagnostic Equipment | Automotive Body Control Module |
Use Scenario: Saving user preferences, sensor offset corrections, and diagnostic fault history in portable ultrasound or ECG units. IC Role / Device Role / Timing Role: Secure, low-power configuration storage with write-protection for regulatory-critical calibration data. Use Value: Meets IEC 62304 Class C software requirements for data integrity and supports audit-ready calibration logging. |
Use Scenario: Storing seat position memory, mirror fold/unfold settings, and lighting profiles in 12V automotive BCMs. IC Role / Device Role / Timing Role: Automotive-grade nonvolatile memory interfaced directly to 3.3V MCU I²C peripheral; survives load-dump transients. Use Value: Eliminates need for external voltage translators and meets AEC-Q100 stress test requirements for EEPROM functionality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C08-10PU | Same 8K-bit capacity, identical pinout and timing, but in 8-lead SOIC (8S1) package instead of PDIP. | Preferred for surface-mount production; requires PCB redesign for footprint and reflow profile. | Select when automated assembly and board space constraints favor SOIC over through-hole PDIP. |
| M95M01-RMN6TP | 1 Mbit SPI EEPROM (128K × 8); different interface (SPI vs. I²C); no WP pin; 2.5–5.5V supply; 5 ms write time. | Requires SPI-capable MCU peripheral and separate chip-select routing; lacks hardware write protection granularity. | Choose only if system already uses SPI peripherals and higher density is needed; not drop-in compatible. |
Compared with AT24C08-10PU, the AT24C08-10PI offers identical electrical behavior but in a through-hole package for prototyping or legacy repair. Versus M95M01-RMN6TP, it provides I²C simplicity and hardware write protection at lower density - making it optimal for cost-sensitive industrial control where bus pin count and data security are prioritized over raw capacity.
Availability
AT24C08-10PI is available at Aetrix Electronics and suitable for smart energy metering, industrial PLC configuration, medical diagnostics, and automotive body control modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT24C08-10PI 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 AT24Cxx EEPROM family. The company specializes in microcontrollers, analog, and memory solutions for industrial, automotive, and consumer markets.
The AT24Cxx series was designed specifically for robust, low-power, I²C-based nonvolatile storage in resource-constrained embedded systems - emphasizing reliability, wide voltage operation, and ease of integration with 8-bit and 32-bit MCUs.
FAQ
What is the maximum I²C clock frequency supported by AT24C08-10PI?
The AT24C08-10PI supports up to 400 kHz I²C clock frequency when operated at 5.0V (VCC = 4.5V to 5.5V). At its rated 2.7V–5.5V range, the maximum frequency drops to 100 kHz for VCC = 2.7V to 3.6V. This dual-speed capability allows flexible integration across both legacy 100 kHz and modern Fast-mode I²C systems without protocol changes.
How does the Write Protect (WP) pin function on AT24C08-10PI?
On the AT24C08-10PI, the WP pin enables hardware write protection for the upper half (4K) of the 8K memory array when pulled high to VCC. When WP is grounded, full read/write access is enabled. This selective protection prevents accidental overwrites of critical calibration or configuration data while allowing active parameter updates in the lower 4K region.
What package type is used for AT24C08-10PI?
The AT24C08-10PI uses an 8-pin PDIP (Plastic Dual Inline Package) with 0.300" body width (JEDEC MS-001BA, package code 8P3). It is a through-hole package with tin-lead leads, intended for prototyping, manual assembly, and legacy board repairs where surface-mount alternatives are unsuitable.
Can AT24C08-10PI operate down to 1.8V?
No - the AT24C08-10PI is specified for 2.7V to 5.5V operation only. For 1.8V operation, the correct variant is AT24C08-10PI-1.8, which has distinct ordering code, tighter DC specs (e.g., 800 µA max ICC), and reduced 100 kHz I²C speed. Using AT24C08-10PI below 2.7V violates absolute maximum ratings and risks unreliable communication or data corruption.
What is the memory organization and addressing scheme of AT24C08-10PI?
The AT24C08-10PI contains 1024 words × 8 bits (8K-bit), internally organized as 64 pages of 16 bytes each. It uses a 10-bit data word address for random access and a 3-bit device address where only A2 is functional (A0 and A1 are no-connect). This allows up to two AT24C08-10PI devices on a single I²C bus with unique addresses.
AT24C08-10PI 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:
- 900 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C08-10PI FAQ
1.How can I place an order for AT24C08-10PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08-10PI 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 AT24C08-10PI reliable?
The price and inventory of AT24C08-10PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C08-10PI is usually 5 days.
3.What payment methods are accepted for AT24C08-10PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08-10PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08-10PI?
AT24C08-10PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08-10PI 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 AT24C08-10PI?
For technical support, including AT24C08-10PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08-10PI requirements.
6.How does Aetrix verify that AT24C08-10PI is sourced from the original manufacturer or authorized distributors?
All AT24C08-10PI 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 AT24C08-10PI meets industry standards.
7.What is the process for return or replacement of AT24C08-10PI?
All AT24C08-10PI units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08-10PI, 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 AT24C08-10PI part is unused and in its original packaging.
Return procedure for AT24C08-10PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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