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Microchip Technology AT24C08AN-10SI-1.8
- Part No.:
- AT24C08AN-10SI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C08AN-10SI-1.8.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,344
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Product details
Overview
AT24C08AN-10SI-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 communication at 1.8V, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention - deployed in industrial sensor nodes and battery-powered IoT endpoints.
For engineers reviewing the AT24C08AN-10SI-1.8 datasheet, AT24C08AN-10SI-1.8 pinout, AT24C08AN-10SI-1.8 application, or AT24C08AN-10SI-1.8 equivalent, key selection criteria include its 1.8V minimum supply, 8-pin SOIC package with industrial temperature range (−40°C to +85°C), page-write capability (16-byte pages), and A2-only device addressing for dual-device bus configuration.
Technical Context
The AT24C08AN-10SI-1.8 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 each), requiring a 10-bit word address for random access.
Write protection is enforced 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 patches or calibration tables in space-constrained MCU designs. |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V logic families and mixed-voltage systems without level shifters. |
| I²C Clock Frequency | 100 kHz at 1.8V - ensures reliable timing margin in low-power, noise-sensitive applications like portable medical devices. |
| Write Cycle Time | Max 10 ms - defines minimum interval between write commands; impacts real-time logging latency in data acquisition systems. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - validated for long-life deployments in utility metering and industrial controllers. |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments including factory automation and outdoor telemetry units. |
| ESD Protection | >3000V HBM - provides robust handling during board assembly and field service in unshielded enclosures. |
Pinout & Package
AT24C08AN-10SI-1.8 is housed in an 8-pin JEDEC SOIC package (8S1), 0.150" wide, with standard gull-wing leads and RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect | Internally unused; must be left floating or grounded - no effect on device addressing or functionality. |
| A1 | No Connect | Internally unused; no connection required - simplifies PCB routing in multi-device I²C networks. |
| A2 | Device Address Input | Hard-wired address bit; sets LSB of 7-bit I²C slave address (0x50 or 0x51), enabling dual-device bus topology. |
| GND | Ground Reference | Return path for all internal circuitry and I²C pull-up currents; requires low-impedance connection to system ground plane. |
| VCC | Power Supply | 1.8V–5.5V input; decoupling capacitor (0.1 µF ceramic) mandatory within 5 mm of pin for stable I²C operation. |
| WP | Write Protect Control | Active-high hardware lock: VCC = full-array protection; GND = normal read/write - eliminates accidental overwrites in field-upgrade scenarios. |
| SCL | Serial Clock Input | Master-generated clock (100 kHz max at 1.8V); Schmitt-trigger input rejects noise; requires external pull-up resistor (typically 4.7 kΩ). |
| SDA | Serial Data I/O | Bidirectional open-drain line; shared across I²C bus; requires same pull-up as SCL; supports ACK/NACK signaling per I²C protocol. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V Operation Support | Enables direct integration with ultra-low-power MCUs (e.g., ARM Cortex-M0+ or RISC-V cores) without voltage translation. |
| 16-Byte Page Write Mode | Reduces I²C transaction overhead by 16× vs. byte writes - critical for efficient firmware parameter updates in edge devices. |
| Hardware Write Protection (WP) | Prevents corruption during brown-out, reset, or software faults - essential for safety-critical configuration storage in automotive ECUs. |
| Industrial Temperature Range | Validated operation from −40°C to +85°C ensures reliability in harsh environments such as motor drives and outdoor gateways. |
| 100-Year Data Retention | Eliminates need for periodic refresh or backup power - suitable for archival storage in smart grid infrastructure and asset tracking tags. |
Applications
| Smart Energy Meters | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Storing tariff schedules, meter calibration coefficients, and tamper-event logs in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration and event-history storage with guaranteed integrity across 15+ year field life. Use Value: Eliminates battery-backed SRAM; leverages 1.8V compatibility to reduce system power budget by >40% versus 5V EEPROMs. |
Use Scenario: Holding I/O mapping tables, channel-specific gain/offset values, and firmware update staging buffers in modular PLC backplanes. IC Role / Device Role / Timing Role: Persistent parameter storage accessible via isolated I²C bus; supports hot-swap module identification and reconfiguration. Use Value: Enables zero-downtime field upgrades and reduces BOM count by replacing discrete OTP fuses and volatile RAM + backup capacitors. |
| Wearable Health Sensors | Automotive Body Control Modules |
|
Use Scenario: Saving patient-specific thresholds, sensor calibration offsets, and usage history in Bluetooth-enabled ECG patches and glucose monitors. IC Role / Device Role / Timing Role: Low-voltage nonvolatile memory co-located with 1.8V analog front-end and BLE SoC. Use Value: Achieves sub-10 µA standby current (at 1.8V), extending coin-cell battery life beyond 12 months without compromising data persistence. |
Use Scenario: Storing seat position presets, mirror-angle profiles, and lighting configuration in Class A interior modules compliant with AEC-Q100 Grade 2. IC Role / Device Role / Timing Role: Automotive-grade EEPROM interfaced directly to 1.8V CAN transceiver microcontrollers for fail-safe settings retention. Use Value: Meets -40°C cold-cranking and +85°C under-hood thermal requirements while supporting 1M-cycle endurance for lifetime vehicle use. |
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/K | 1 Mbit SPI interface, 2.5–5.5V supply, 5 MHz max clock; no WP pin; 8-lead TSSOP package. | Requires SPI host interface and separate GPIO for software write control; lacks hardware WP and 1.8V support. | Select when higher throughput (vs. I²C) is needed and system already uses SPI peripherals; not suitable for 1.8V or WP-critical designs. |
| BR24G08NUX-10 | 8K-bit I²C EEPROM, 1.6–5.5V supply, 400 kHz @ 1.8V, 8-lead USON package; A0/A1/A2 addressing; built-in write cycle interrupt. | Supports faster 400 kHz I²C at 1.8V and offers interrupt signaling for write completion - adds flexibility but increases pin count and layout complexity. | Choose for time-sensitive write acknowledgment or when footprint reduction (USON) outweighs SOIC compatibility; verify interrupt GPIO availability. |
Compared with M95M01-RDW6TP/K and BR24G08NUX-10, AT24C08AN-10SI-1.8 uniquely balances 1.8V operation, hardware write protection, industrial temperature rating, and JEDEC SOIC compatibility - making it optimal for cost-sensitive, low-power industrial and medical designs where I²C is standardized and layout reuse is prioritized.
Availability
AT24C08AN-10SI-1.8 is available at Aetrix Electronics and suitable for industrial sensor nodes, battery-powered wearables, and automotive body electronics requiring stable component supply across extended product lifecycles.
Supply support for AT24C08AN-10SI-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 memory solutions, with a focus on embedded control and connectivity.
The AT24C08A family was designed for low-voltage, low-power serial data storage in resource-constrained embedded systems - targeting applications where reliability, small footprint, and I²C simplicity are critical.
FAQ
What is the maximum I²C clock frequency supported by AT24C08AN-10SI-1.8 at 1.8V?
The AT24C08AN-10SI-1.8 supports a maximum I²C clock frequency of 100 kHz when operating at 1.8V. This is specified in the AC Characteristics table under fSCL for 1.8V operation. Higher frequencies (up to 400 kHz) are only guaranteed at VCC ≥ 2.7V. Designers must respect this limit to ensure reliable acknowledge timing and data setup/hold compliance in low-voltage systems.
How does the WP pin function on AT24C08AN-10SI-1.8?
On AT24C08AN-10SI-1.8, the WP (Write Protect) pin enables hardware-level array locking: when pulled high to VCC, the entire 8K memory is write-protected; when grounded, full read/write access is permitted. Unlike earlier AT24C02/04 variants, AT24C08A applies protection to the full array - not just upper half - ensuring complete firmware or calibration data integrity during unexpected resets or power loss.
Which pins are unused on AT24C08AN-10SI-1.8 and how should they be handled?
A0 and A1 are designated as "No Connect" on AT24C08AN-10SI-1.8 per the Pin Description section. They must be left unconnected - neither tied high nor low - as internal circuitry does not reference them. PCB layout should omit traces or pads for these pins to prevent parasitic coupling or unintended biasing that could affect SCL/SDA noise immunity.
What is the memory organization and addressing scheme of AT24C08AN-10SI-1.8?
AT24C08AN-10SI-1.8 organizes its 8192 bits as 1024 words of 8 bits each, requiring a 10-bit word address for random access. Device addressing uses only the A2 pin (A0/A1 NC), resulting in two possible 7-bit I²C slave addresses: 0x50 (A2 = low) or 0x51 (A2 = high). This allows exactly two AT24C08A devices on one I²C bus without address conflict.
Does AT24C08AN-10SI-1.8 support partial page writes, and what is the page size?
Yes, AT24C08AN-10SI-1.8 supports partial page writes within its 16-byte pages. The device implements 16-byte page boundaries - meaning up to 16 sequential bytes can be written in a single page-write cycle. Partial writes (e.g., 3 or 12 bytes) are allowed as long as they remain within one page boundary; crossing a page boundary automatically wraps to the start of the same page, overwriting prior data in that page.
What is the standby current consumption of AT24C08AN-10SI-1.8 at 1.8V?
At VCC = 1.8V and TA = −40°C to +85°C, the AT24C08AN-10SI-1.8 exhibits a maximum standby current (ISB1) of 3.0 µA, with a typical value of 0.6 µA. This ultra-low quiescent draw is critical for battery-operated applications such as wireless sensors and portable diagnostics, where minimizing background power loss extends operational lifetime significantly.
AT24C08AN-10SI-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C08AN-10SI-1.8 FAQ
1.How can I place an order for AT24C08AN-10SI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08AN-10SI-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 AT24C08AN-10SI-1.8 reliable?
The price and inventory of AT24C08AN-10SI-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 AT24C08AN-10SI-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C08AN-10SI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08AN-10SI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08AN-10SI-1.8?
AT24C08AN-10SI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08AN-10SI-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 AT24C08AN-10SI-1.8?
For technical support, including AT24C08AN-10SI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08AN-10SI-1.8 requirements.
6.How does Aetrix verify that AT24C08AN-10SI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C08AN-10SI-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 AT24C08AN-10SI-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C08AN-10SI-1.8?
All AT24C08AN-10SI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08AN-10SI-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 AT24C08AN-10SI-1.8 part is unused and in its original packaging.
Return procedure for AT24C08AN-10SI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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