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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology AT24C08A-10PI-1.8

Name: AT24C08A-10PI-1.8
Brand: Microchip Technology
SKU: AT24C08A-10PI-1.8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AT24C08A-10PI-1.8

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: AT24C08A-10PI-1.8.pdf

Description:: IC EEPROM 8KBIT I2C 400KHZ 8DIP

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Product details

Overview

AT24C08A-10PI-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 AT24C08A-10PI-1.8 datasheet, AT24C08A-10PI-1.8 pinout, AT24C08A-10PI-1.8 application, or AT24C08A-10PI-1.8 equivalent, key selection criteria include its 1.8V minimum supply, industrial temperature range (−40°C to +85°C), 8-pin PDIP/SOIC/TSSOP package compatibility, and page-write capability with 16-byte boundaries.

Technical Context

The AT24C08A-10PI-1.8 implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs. Its device addressing uses only the A2 pin (A0 and A1 are no-connect), enabling up to two devices on a shared bus. Internal memory is organized into four 256-page blocks of 4 bytes each, requiring a 10-bit word address for random access.

Write operations support both byte and 16-byte page modes, with self-timed internal write cycles completing in ≤10 ms. The WP pin enables full-array hardware write protection when pulled high, and standby current is specified at 3 µA max at VCC = 1.8V - critical for energy-constrained designs.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	8 Kbit (1024 × 8 bits), organized as 4 blocks × 256 pages × 4 bytes - enables efficient 16-byte aligned writes and deterministic address mapping.
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 maximum at 1.8V - ensures reliable timing margin under low-VCC conditions with standard pull-up resistors.
Write Cycle Time	≤10 ms max - defines minimum interval between write commands; polling required to confirm completion before next access.
Endurance & Retention	1 million write cycles / 100 years data retention - validated for long-life deployment in firmware parameter storage and calibration logging.
Operating Temperature	−40°C to +85°C - qualified for industrial-grade operation in automotive body control modules and factory automation sensors.
ESD Protection	>3000V HBM - provides robust handling during PCB assembly and field service in unshielded environments.

Pinout & Package

AT24C08A-10PI-1.8 is supplied in an 8-pin PDIP (package code 8P3), with pin 1 marked by notch or dot. Pin functions are electrically identical across SOIC and TSSOP variants per JEDEC MS-001 BA and MO-153 standards.

Pin/Terminal	Circuit Role	Design Meaning
A0	Device Address Input	No-connect for AT24C08A; must be left floating or tied to GND/VCC - not used in address decoding.
A1	Device Address Input	No-connect for AT24C08A; unused in 8K variant - does not affect I²C slave address resolution.
A2	Device Address Input	Hardwired address bit; determines LSB of 7-bit I²C slave address (0x50–0x51 range) - enables dual-device bus configuration.
GND	Ground Reference	Return path for VCC and I/O; requires low-impedance connection to system ground plane to maintain noise immunity.
VCC	Power Supply	1.8V–5.5V input; bypass capacitor (0.1 µF ceramic) mandatory within 10 mm of pin to suppress I²C switching transients.
WP	Write Protect Control	Active-high hardware lock: tied to VCC disables all write operations (full 8K array protected); tied to GND enables normal read/write.
SCL	Serial Clock Input	Open-drain input synchronized to master clock; requires external pull-up (typically 4.7 kΩ to VCC) - edge-triggered on rising edge for data sampling.
SDA	Serial Data I/O	Bidirectional open-drain line shared across I²C bus; requires same pull-up as SCL - driven low by device during ACK/NACK and data transmission.

Key Features

Feature	Design Value
1.8V Operation Support	Guaranteed functionality down to 1.8V supply - eliminates need for voltage translators in 1.8V microcontroller interfaces (e.g., ARM Cortex-M0+).
Hardware Write Protection	WP pin disables all write commands when high - prevents accidental firmware corruption during power-up/down or brown-out events.
16-Byte Page Write Mode	Enables burst programming of up to 16 contiguous bytes per write cycle - reduces I²C transaction overhead by 87.5% vs. byte-by-byte writes.
Industrial Temperature Range	Rated for −40°C to +85°C ambient - suitable for under-hood automotive modules and outdoor industrial gateways without derating.
Noise-Immune Inputs	Schmitt-trigger + RC filtering on SDA/SCL - rejects >100 ns glitches and sustains reliable communication in EMI-heavy motor-control environments.

Applications

Smart Meter Calibration Storage	Industrial PLC Configuration Backup
Use Scenario: Storing meter-specific calibration coefficients and tariff tables in electricity/water meters exposed to wide temperature swings and infrequent firmware updates. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed via I²C during boot or maintenance mode; retains data across 10+ year deployments without battery backup. Use Value: 100-year data retention and 1M write endurance ensure calibration integrity over full product lifecycle, eliminating field recalibration costs.	Use Scenario: Preserving ladder logic configuration, I/O mapping, and alarm thresholds in programmable logic controllers operating in factory-floor environments with vibration and electrical noise. IC Role / Device Role / Timing Role: Fault-tolerant configuration memory updated only during commissioning or firmware upgrades; isolated from real-time control paths. Use Value: Hardware WP pin prevents runtime corruption during ESD events or power interruptions - maintains operational continuity after unexpected resets.
Medical Sensor Module Settings	Automotive Body Control Unit (BCU)
Use Scenario: Holding patient-specific sensor gain settings, offset trims, and usage history in portable diagnostic devices powered by coin-cell batteries. IC Role / Device Role / Timing Role: Ultra-low-power nonvolatile memory accessed intermittently via 1.8V I²C; draws ≤3 µA in standby to extend battery life. Use Value: 1.8V operation enables direct connection to low-power MCU I/O without level-shifting, reducing BOM count and PCB area.	Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in automotive door modules subject to thermal cycling and load-dump transients. IC Role / Device Role / Timing Role: Ruggedized EEPROM interfaced to 5V CAN microcontrollers via I²C; survives automotive-grade transient conditions per ISO 7637-2. Use Value: >3000V HBM ESD rating and −40°C to +85°C qualification ensure reliability in harsh vehicle cabin environments without additional protection circuitry.

Smart Meter Calibration Storage

Industrial PLC Configuration Backup

Use Scenario: Storing meter-specific calibration coefficients and tariff tables in electricity/water meters exposed to wide temperature swings and infrequent firmware updates.

IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed via I²C during boot or maintenance mode; retains data across 10+ year deployments without battery backup.

Use Value: 100-year data retention and 1M write endurance ensure calibration integrity over full product lifecycle, eliminating field recalibration costs.

Use Scenario: Preserving ladder logic configuration, I/O mapping, and alarm thresholds in programmable logic controllers operating in factory-floor environments with vibration and electrical noise.

IC Role / Device Role / Timing Role: Fault-tolerant configuration memory updated only during commissioning or firmware upgrades; isolated from real-time control paths.

Use Value: Hardware WP pin prevents runtime corruption during ESD events or power interruptions - maintains operational continuity after unexpected resets.

Medical Sensor Module Settings

Automotive Body Control Unit (BCU)

Use Scenario: Holding patient-specific sensor gain settings, offset trims, and usage history in portable diagnostic devices powered by coin-cell batteries.

IC Role / Device Role / Timing Role: Ultra-low-power nonvolatile memory accessed intermittently via 1.8V I²C; draws ≤3 µA in standby to extend battery life.

Use Value: 1.8V operation enables direct connection to low-power MCU I/O without level-shifting, reducing BOM count and PCB area.

Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in automotive door modules subject to thermal cycling and load-dump transients.

IC Role / Device Role / Timing Role: Ruggedized EEPROM interfaced to 5V CAN microcontrollers via I²C; survives automotive-grade transient conditions per ISO 7637-2.

Use Value: >3000V HBM ESD rating and −40°C to +85°C qualification ensure reliability in harsh vehicle cabin environments without additional protection circuitry.

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 - lacks I²C compatibility and 1.8V support.	Requires SPI-capable host MCU; unsuitable for I²C-only systems or 1.8V domains.	Select only if migrating from I²C to SPI architecture and higher speed (5 MHz vs. 100 kHz) is prioritized.
BR24G08FJ-WE2	8 Kbit I²C EEPROM, 1.6–5.5V supply, 400 kHz at 1.8V - adds 400 kHz support at low voltage and smaller 8-pin TSSOP (2.9×2.8 mm).	Enables faster writes in 1.8V systems and space-constrained layouts; same pinout as AT24C08A-10PI-1.8 in TSSOP.	Prefer for new designs needing higher throughput or miniaturization; verify WP pin behavior matches system protection requirements.

Compared with M95M01-RDW6TP and BR24G08FJ-WE2, the AT24C08A-10PI-1.8 offers guaranteed 100 kHz I²C operation at 1.8V in legacy PDIP packaging - making it optimal for cost-sensitive industrial retrofits where board layout and protocol stability are fixed constraints.

Availability

AT24C08A-10PI-1.8 is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body control units, and medical diagnostic equipment requiring stable component supply across extended product lifecycles.

Supply support for AT24C08A-10PI-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 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 memory solutions for industrial and automotive markets.

The AT24C08A series was designed specifically for reliable, low-voltage nonvolatile data storage in resource-constrained embedded systems - emphasizing write endurance, data retention, and interoperability with 8/16-bit MCUs via standardized I²C.

FAQ

What is the I²C address range supported by the AT24C08A-10PI-1.8?

The AT24C08A-10PI-1.8 uses a 7-bit I²C slave address where bits [6:3] are fixed at 0b0101, bit [2] is the A2 pin state (0 or 1), and bit [0] is the R/W bit. This yields two possible base addresses: 0x50 (A2 = 0) or 0x51 (A2 = 1). A0 and A1 are no-connects and do not affect addressing - confirmed in the Device Addressing section of the datasheet.

Does the AT24C08A-10PI-1.8 support 400 kHz I²C operation at 1.8V?

No, the AT24C08A-10PI-1.8 is rated for 100 kHz maximum I²C clock frequency when operating at 1.8V. The 400 kHz specification applies only at VCC ≥ 2.7V. This limitation is explicitly stated in the AC Characteristics table and reflects timing margins for reliable low-voltage signaling - using 400 kHz at 1.8V risks data corruption or NACK responses.

How is write protection implemented on the AT24C08A-10PI-1.8?

Write protection on the AT24C08A-10PI-1.8 is controlled exclusively by the WP pin: when WP is tied to VCC, the entire 8K array is write-protected; when WP is grounded, full read/write access is enabled. Unlike earlier AT24C02/04 variants, the AT24C08A does not support partial-array protection - this behavior is documented in the WP Pin Status table.

What package types are available for the AT24C08A-10PI-1.8?

The AT24C08A-10PI-1.8 is offered in three industry-standard packages: 8-pin PDIP (8P3), 8-pin JEDEC SOIC (8S1), and 8-pin TSSOP (8T). All share identical pinout and electrical characteristics. The "PI" suffix denotes industrial temperature grade (−40°C to +85°C), and "-1.8" specifies 1.8V–5.5V operation - verified in the AT24C08A Ordering Information table.

Can the AT24C08A-10PI-1.8 perform partial page writes?

Yes, the AT24C08A-10PI-1.8 supports partial page writes: up to 16 bytes may be written in a single page-write cycle, and fewer than 16 bytes (e.g., 1–15) can be transmitted without violating timing or alignment constraints. The internal address counter increments automatically, and wraparound occurs at page boundary - detailed in the Page Write section of the datasheet.

AT24C08A-10PI-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:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 8-PDIP

AT24C08A-10PI-1.8 FAQ

1.How can I place an order for AT24C08A-10PI-1.8 through Aetrix?

Please submit a Request for Quotation (RFQ) for AT24C08A-10PI-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-10PI-1.8 reliable?

The price and inventory of AT24C08A-10PI-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-10PI-1.8 is usually 5 days.

3.What payment methods are accepted for AT24C08A-10PI-1.8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08A-10PI-1.8 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT24C08A-10PI-1.8?

AT24C08A-10PI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT24C08A-10PI-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-10PI-1.8?

For technical support, including AT24C08A-10PI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08A-10PI-1.8 requirements.

6.How does Aetrix verify that AT24C08A-10PI-1.8 is sourced from the original manufacturer or authorized distributors?

All AT24C08A-10PI-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-10PI-1.8 meets industry standards.

7.What is the process for return or replacement of AT24C08A-10PI-1.8?

All AT24C08A-10PI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08A-10PI-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-10PI-1.8 part is unused and in its original packaging.

Return procedure for AT24C08A-10PI-1.8:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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