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Microchip Technology AT24C08A-10PC-1.8
- Part No.:
- AT24C08A-10PC-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C08A-10PC-1.8.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,180
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Product details
Overview
AT24C08A-10PC-1.8 from Microchip Technology (formerly Atmel) is an 8K-bit (1024 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage embedded systems. It operates from 1.8V to 5.5V, supports 100 kHz I²C bus speed at 1.8V, 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 AT24C08A-10PC-1.8 datasheet, AT24C08A-10PC-1.8 pinout, AT24C08A-10PC-1.8 application, or AT24C08A-10PC-1.8 equivalent, key selection considerations include its 1.8V minimum supply, 8-pin PDIP package, 16-byte page write capability, A2-only device addressing, and compatibility with microcontroller I²C peripherals in space-constrained industrial control modules.
Technical Context
The AT24C08A-10PC-1.8 implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA/SCL inputs and open-drain bidirectional data transfer. Its internal memory is organized into four 256-page blocks of 4 bytes each, requiring a 10-bit word address for random access.
Write protection is controlled solely by the WP pin: tied to VCC, it locks the full 8K array; tied to GND, full read/write access is enabled. Device addressing uses only the A2 pin (A0 and A1 are no-connect), allowing up to two AT24C08A devices on a single I²C bus.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8192 bits (1024 × 8), enabling storage of firmware calibration tables or device identity data |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V logic microcontrollers without level shifters |
| I²C Clock Frequency | 100 kHz max at 1.8V - ensures reliable timing margin in low-power sensor nodes |
| Page Write Size | 16 bytes - reduces write transaction overhead versus byte-write for bulk parameter updates |
| Write Cycle Time | 10 ms maximum - defines minimum interval between successive write commands |
| Data Retention | 100 years - guarantees long-term integrity of stored configuration without refresh |
| Endurance | 1 million write cycles - supports frequent recalibration logging in field-deployed equipment |
Pinout & Package
AT24C08A-10PC-1.8 is supplied in an 8-lead, 0.300" wide plastic dual-inline package (PDIP), compliant with JEDEC MS-001 BA. Pin 1 is marked with a notch or dot; the package is lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | No-connect for AT24C08A - must be left floating or grounded; not used in addressing |
| A1 | Device Address Input | No-connect for AT24C08A - must be left floating or grounded; not used in addressing |
| A2 | Device Address Input | Hardwired address bit - determines one of two possible I²C device addresses (0x50 or 0x51) |
| GND | Ground Reference | Return path for all internal circuitry and I²C bus termination |
| VCC | Power Supply | Primary supply input - accepts 1.8V–5.5V; powers EEPROM core and I/O buffers |
| WP | Write Protect Control | Hardware lock - high = full 8K array write-protected; low = normal read/write operation |
| SCL | Serial Clock Input | Positive-edge clock for data-in; negative-edge clock for data-out per I²C protocol |
| SDA | Serial Data I/O | Bidirectional open-drain line - requires external pull-up; shared across multiple I²C devices |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V Operation Support | Enables direct integration with 1.8V SoCs and ultra-low-power MCUs without voltage translation |
| 16-Byte Page Write | Reduces I²C transaction count by 16× versus byte writes - critical for minimizing bus occupancy in real-time systems |
| Hardware Write Protection (WP) | Prevents accidental overwrites during power transients or firmware glitches - no software dependency required |
| 100-Year Data Retention | Eliminates need for periodic data refresh or backup power - suitable for sealed, maintenance-free deployments |
| ESD Protection >3000V | Withstands handling and board-level ESD events without latch-up or parametric shift - improves manufacturing yield |
Applications
| Smart Meter Configuration Storage | Industrial PLC Parameter Backup |
|---|---|
Use Scenario: Storing tariff schedules, meter ID, and calibration coefficients in electricity/water meters operating on coin-cell batteries. IC Role / Device Role / Timing Role: Nonvolatile configuration register - retains settings across power cycles and supports infrequent but critical write operations. Use Value: 1.8V operation enables direct connection to low-power metrology ADCs; 100-year retention eliminates field replacement due to data loss. | Use Scenario: Preserving I/O mapping, PID tuning constants, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: System state keeper - holds user-defined parameters that survive firmware updates and unexpected power loss. Use Value: WP pin prevents corruption during brown-out conditions; 16-byte page writes accelerate backup of multi-parameter sets. |
| Medical Sensor Calibration Memory | Automotive Body Control Module NVM |
Use Scenario: Storing factory-calibrated offset/gain values for temperature, pressure, and humidity sensors in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision reference data vault - accessed once per sensor startup to initialize compensation algorithms. Use Value: 1 million endurance supports lifetime recalibration during service; 1.8V compatibility matches sensor signal chain voltage rails. | Use Scenario: Holding seat position presets, mirror angles, and lighting profiles in automotive body control units (BCUs). IC Role / Device Role / Timing Role: User preference repository - updated only when settings change, read at power-on initialization. Use Value: Hardware WP prevents inadvertent erasure during CAN bus firmware updates; 8-pin PDIP simplifies through-hole assembly in legacy BCU designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95M01-RDW6TP | 1 Mbit SPI interface, 2.5–5.5V supply, 5 MHz max clock - no I²C support, different protocol stack | Requires SPI-capable MCU; unsuitable for I²C-bus-constrained designs with shared SDA/SCL lines | Select only if system already uses SPI peripherals and board layout cannot accommodate I²C routing changes |
| 24LC08B-I/P | Same 8K-bit I²C EEPROM, but rated for industrial temp (−40°C to +85°C); identical pinout and timing at 1.8V | Valid drop-in replacement where extended temperature range is required - no firmware or layout changes needed | Choose when operating ambient exceeds 70°C or when long-term reliability under thermal cycling is critical |
Compared with AT24C08A-10PC-1.8, the M95M01-RDW6TP demands SPI driver redesign and forfeits I²C multi-drop capability, while the 24LC08B-I/P offers identical functionality with guaranteed industrial-grade performance - making it the preferred alternative for harsh-environment deployments.
Availability
AT24C08A-10PC-1.8 is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, medical sensor calibration, and automotive body control modules requiring stable component supply across production lifecycles.
Supply support for AT24C08A-10PC-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 is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with a focus on embedded control and connectivity.
The AT24C08A belongs to Microchip's legacy serial EEPROM product line, designed specifically for low-voltage, low-power, and space-constrained applications in industrial, medical, and consumer electronics.
FAQ
What is the minimum operating voltage for AT24C08A-10PC-1.8?
The AT24C08A-10PC-1.8 operates down to 1.8V, as confirmed in its ordering code suffix "-1.8" and DC Characteristics table. This allows direct interfacing with 1.8V I/O domains without level-shifting circuitry. The device maintains full 100 kHz I²C functionality and specified write endurance at this voltage. AT24C08A-10PC-1.8 is not rated for operation below 1.8V - attempting lower voltages may result in unreliable reads or failed writes.
Does AT24C08A-10PC-1.8 support page write operations, and what is the page size?
Yes, AT24C08A-10PC-1.8 supports 16-byte page writes, as explicitly stated in the Features section and Memory Organization description. This allows up to 16 sequential bytes to be written in a single I²C transaction, significantly improving throughput over byte-wise writes. The page boundary is fixed at 16-byte intervals, and address roll-over occurs within the same page. AT24C08A-10PC-1.8 does not support partial-page writes beyond the 16-byte limit - exceeding it wraps to the start of the current page.
How is device addressing implemented on AT24C08A-10PC-1.8?
AT24C08A-10PC-1.8 uses only the A2 pin for hardware device addressing; A0 and A1 are no-connect pins. This yields two possible 7-bit I²C addresses: 0x50 (A2 = low) or 0x51 (A2 = high). The base address prefix is 0b1010, followed by A2, then the R/W bit. This differs from AT24C02A (3 address bits) and AT24C04A (2 address bits), limiting bus scalability to two AT24C08A-10PC-1.8 devices per I²C segment.
What happens when the WP pin is tied to VCC on AT24C08A-10PC-1.8?
When WP is tied to VCC on AT24C08A-10PC-1.8, the entire 8K-bit memory array becomes write-protected - all write attempts (byte, page, or erase) are ignored, though read operations remain fully functional. This hardware lock operates independently of I²C commands and persists across power cycles. AT24C08A-10PC-1.8 resumes normal write capability only when WP is pulled to GND, providing robust immunity against firmware bugs or voltage glitches.
Is AT24C08A-10PC-1.8 compatible with standard I²C bus speeds and protocols?
AT24C08A-10PC-1.8 complies with standard I²C protocol definitions including START/STOP conditions, ACK/NACK handshaking, and 7-bit addressing. At 1.8V, it supports up to 100 kHz clock frequency with specified timing margins (tLOW = 4.7 µs, tHIGH = 4.0 µs). It does not support fast-mode (400 kHz) at 1.8V - that speed is only guaranteed for 5.0V operation per AC Characteristics table. AT24C08A-10PC-1.8 implements standard I²C arbitration and collision detection.
AT24C08A-10PC-1.8 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C08A-10PC-1.8 FAQ
1.How can I place an order for AT24C08A-10PC-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08A-10PC-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 AT24C08A-10PC-1.8 reliable?
The price and inventory of AT24C08A-10PC-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 AT24C08A-10PC-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C08A-10PC-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08A-10PC-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08A-10PC-1.8?
AT24C08A-10PC-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08A-10PC-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 AT24C08A-10PC-1.8?
For technical support, including AT24C08A-10PC-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08A-10PC-1.8 requirements.
6.How does Aetrix verify that AT24C08A-10PC-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C08A-10PC-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 AT24C08A-10PC-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C08A-10PC-1.8?
All AT24C08A-10PC-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08A-10PC-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 AT24C08A-10PC-1.8 part is unused and in its original packaging.
Return procedure for AT24C08A-10PC-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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