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Microchip Technology AT24C08A-10PC
- Part No.:
- AT24C08A-10PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C08A-10PC.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,684
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Product details
Overview
AT24C08A-10PC from Atmel is an 8K-bit (1024 × 8) I²C-compatible serial EEPROM with hardware write protection, low-voltage operation (2.7V–5.5V), and 100-year data retention. It supports 100 kHz clock frequency at 2.7V, features 16-byte page write capability, and is housed in an 8-pin PDIP package for industrial and embedded systems requiring nonvolatile parameter storage.
For engineers reviewing the AT24C08A-10PC datasheet, AT24C08A-10PC pinout, AT24C08A-10PC application, or AT24C08A-10PC equivalent, key selection considerations include its 2.7V minimum supply, WP pin-based hardware write lock, 16-byte page write mode, 10 ms max write cycle time, and compatibility with standard I²C bus timing at reduced voltage.
Technical Context
The AT24C08A-10PC 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 four 256-page blocks of 4 bytes each, requiring a 10-bit word address for random access.
Device addressing uses only the A2 pin (A0 and A1 are NC), enabling up to two AT24C08A devices on a single bus. Write protection is asserted when WP = VCC, locking the full 8K array - distinct from AT24C02A/04A's partial-array protection schemes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 8192 bits (1024 × 8), organized as 4 blocks × 256 pages × 4 bytes - enables efficient 16-byte page writes without cross-block boundary issues. |
| Supply Voltage Range | 2.7V to 5.5V - supports direct integration into 3.3V and 5V systems without level-shifting. |
| I²C Clock Frequency | 100 kHz maximum at 2.7V - ensures reliable timing margin in noise-prone industrial environments. |
| Write Cycle Time | 10 ms maximum - defines minimum interval between write commands; impacts firmware polling or timeout design. |
| Endurance | 1 million write cycles - guarantees long-term reliability in configuration logging or calibration update applications. |
| Data Retention | 100 years at +25°C - ensures stored settings remain valid across product lifetime without refresh. |
| ESD Protection | >3000V HBM - provides robust handling during board assembly and field service. |
Pinout & Package
AT24C08A-10PC is supplied in an 8-lead, 0.300" wide plastic dual inline package (PDIP), per JEDEC MS-001 BA. Pin 1 is marked with a notch or dot; leads are tin-lead plated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No-connect for AT24C08A - must be left floating or tied to GND/VCC; unused in device addressing. |
| A1 | Address Input | No-connect for AT24C08A - not used in device address decoding; no electrical or functional role. |
| A2 | Device Address Bit | Hardwired address bit; selects one of two possible addresses (0x50 or 0x51) 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 | Primary power input (2.7–5.5V); bypass capacitor (0.1 µF) required within 10 mm of pin. |
| WP | Write Protect Control | Hardware lock: logic high (VCC) disables all writes to entire 8K array; logic low (GND) enables normal R/W. |
| SCL | Serial Clock Input | Positive-edge sampled clock for I²C protocol; requires external pull-up resistor (typically 4.7 kΩ). |
| SDA | Serial Data I/O | Bidirectional open-drain line; shares bus with other I²C devices; requires same pull-up as SCL. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin asserts full-array lock at VCC - prevents accidental overwrites during power transients or firmware faults. |
| Low-Voltage Operation | Functional down to 2.7V - eliminates need for voltage regulators in battery-powered or energy-harvesting nodes. |
| 16-Byte Page Write Mode | Enables burst programming of aligned 16-byte segments - reduces I²C transaction overhead by 87% vs. byte-wise writes. |
| Noise-Immune Inputs | Schmitt-trigger + filtering on SDA/SCL - suppresses EMI-induced glitches in motor drives or switching power supplies. |
| High Endurance & Retention | 1M write cycles / 100-year data hold - suitable for factory calibration storage, metering logs, and medical device settings. |
Applications
| Smart Energy Metering | Industrial PLC Configuration |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs in utility-grade electricity meters. IC Role / Device Role / Timing Role: Nonvolatile parameter store interfaced via I²C to metering SoC; retains data during mains dropout. Use Value: 100-year retention ensures calibration validity across meter lifetime; WP pin prevents corruption during firmware updates. |
Use Scenario: Holding I/O mapping tables, PID tuning parameters, and safety thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Configuration EEPROM accessed at boot and runtime by ARM Cortex-M MCU over 100 kHz I²C bus. Use Value: 2.7V operation allows direct connection to 3.3V PLC backplane; 16-byte page writes accelerate parameter batch loading. |
| Medical Diagnostic Equipment | Automotive Body Control Module |
Use Scenario: Saving user preferences, sensor calibration offsets, and diagnostic fault history in portable ultrasound units. IC Role / Device Role / Timing Role: I²C-connected EEPROM storing critical setup data; accessed during power-up and service mode. Use Value: >3000V HBM ESD rating withstands clinical environment handling; WP pin blocks unintended writes during ESD events. |
Use Scenario: Storing seat position memory, mirror presets, and lighting profiles in automotive BCMs operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Robust nonvolatile memory for user-configurable settings; interfaces to Infineon AURIX™ via I²C. Use Value: Industrial temperature grade (-40°C to +85°C) and 1M endurance support repeated reprogramming in service garages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip 24LC08B-I/P | Same 8K-bit capacity, 2.5V–5.5V range, but rated for 100 kHz only at ≥2.5V; no 2.7V-specific speed bin. | Lacks dedicated 2.7V-optimized timing spec; may require derating in 2.7V systems near temperature extremes. | Prefer AT24C08A-10PC where guaranteed 100 kHz operation at 2.7V is required. |
| ON Semiconductor CAT24C08WI-GT3 | Identical 8K-bit organization and 2.7V–5.5V range, but offers 400 kHz at 2.7V (vs. 100 kHz for AT24C08A-10PC). | Higher-speed option for systems needing faster parameter loading; different WP behavior (active-low vs. AT24C08A's active-high). | Select CAT24C08WI-GT3 only if 400 kHz I²C timing is needed and WP polarity can be accommodated in layout. |
Compared with Microchip 24LC08B-I/P and ON Semi CAT24C08WI-GT3, the AT24C08A-10PC delivers verified 100 kHz operation specifically at 2.7V with active-high WP - making it optimal for cost-sensitive industrial designs where timing margin and hardware lock simplicity are prioritized over maximum speed.
Availability
AT24C08A-10PC is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, medical diagnostics, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT24C08A-10PC 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
Atmel Corporation (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and secure authentication ICs.
The AT24C08A belongs to Atmel's legacy serial EEPROM product line, designed for low-power, space-constrained embedded systems requiring reliable, pin-efficient nonvolatile storage with hardware data protection.
FAQ
What is the exact memory organization of the AT24C08A-10PC?
The AT24C08A-10PC contains 8192 bits organized as 1024 words of 8 bits each (1024 × 8). Internally, it is structured into four 256-page blocks, with each page holding 4 bytes. This layout supports 16-byte page writes and requires a 10-bit word address for random access - a key distinction from smaller family members like the AT24C02A.
Does the AT24C08A-10PC support I²C fast mode (400 kHz)?
No, the AT24C08A-10PC does not support 400 kHz I²C operation. Per its ordering code "-10PC-2.7" and datasheet AC characteristics, it is rated for 100 kHz maximum clock frequency when operated at 2.7V. The "10" in the part number denotes 10 ms max write cycle time, not speed grade - 400 kHz is only supported in 5.0V versions (e.g., AT24C08A-10PC without suffix).
How does the Write Protect (WP) pin function on the AT24C08A-10PC?
On the AT24C08A-10PC, the WP pin provides full-array hardware write protection: when pulled to VCC, all write operations (byte and page) to the entire 8K memory are disabled. When grounded, normal read/write functionality is restored. Unlike AT24C02A/04A, the AT24C08A-10PC protects the full array - no partial protection modes are implemented.
Which packages are available for the AT24C08A-10PC, and what does "PC" signify?
The "PC" suffix in AT24C08A-10PC indicates the 8-lead, 0.300" wide plastic dual inline package (PDIP), per JEDEC MS-001 BA. Other variants exist (e.g., "SC" = SOIC, "TC" = TSSOP), but AT24C08A-10PC specifically refers to the through-hole PDIP variant - confirmed by packaging table reference "8P3" and mechanical drawings in the datasheet.
What is the operating temperature range for the AT24C08A-10PC?
The AT24C08A-10PC is specified for commercial temperature operation: 0°C to +70°C. This is explicitly stated in the AT24C08A Ordering Information table for the "-10PC" and "-10PC-2.7" variants. Industrial-grade versions (e.g., AT24C08A-10PI-2.7) are rated for -40°C to +85°C but carry different suffixes.
AT24C08A-10PC 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C08A-10PC FAQ
1.How can I place an order for AT24C08A-10PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C08A-10PC 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 reliable?
The price and inventory of AT24C08A-10PC 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 is usually 5 days.
3.What payment methods are accepted for AT24C08A-10PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C08A-10PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C08A-10PC?
AT24C08A-10PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C08A-10PC 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?
For technical support, including AT24C08A-10PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C08A-10PC requirements.
6.How does Aetrix verify that AT24C08A-10PC is sourced from the original manufacturer or authorized distributors?
All AT24C08A-10PC 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 meets industry standards.
7.What is the process for return or replacement of AT24C08A-10PC?
All AT24C08A-10PC units undergo pre-shipment inspection (PSI). If there is an issue with AT24C08A-10PC, 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 part is unused and in its original packaging.
Return procedure for AT24C08A-10PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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