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Microchip Technology AT24C01A-10SC-2.7
- Part No.:
- AT24C01A-10SC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C01A-10SC-2.7.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,424
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Product details
Overview
AT24C01A-10SC-2.7 from Microchip Technology (formerly Atmel) is a 1K-bit (128 × 8) two-wire serial EEPROM optimized for low-voltage embedded systems. It operates from 2.7V to 5.5V, supports 100 kHz I²C bus speed, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention. It is commonly used for configuration storage in industrial sensors and power management ICs.
For engineers reviewing the AT24C01A-10SC-2.7 datasheet, AT24C01A-10SC-2.7 pinout, AT24C01A-10SC-2.7 application, or AT24C01A-10SC-2.7 equivalent, key selection criteria include its 2.7V–5.5V supply range, 8-byte page write capability, SOIC-8 package compatibility, and I²C timing compliance at 100 kHz under low-voltage conditions.
Technical Context
The AT24C01A-10SC-2.7 implements a standard I²C-compatible 2-wire interface with open-drain SDA and edge-triggered SCL, supporting bi-directional data transfer and acknowledge polling during write cycles. Its internal architecture uses 16 pages of 8 bytes each, requiring a 7-bit word address for random access.
It integrates Schmitt-trigger inputs and noise filtering on SDA/SCL for robust operation in electrically noisy environments, and employs a self-timed 10 ms max write cycle with automatic internal erase/write sequencing - no external timing control required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), organized as 16 pages × 8 bytes - enables compact firmware parameter storage without external address latches. |
| Supply Voltage Range | 2.7V to 5.5V - supports direct interfacing with 3.3V microcontrollers and legacy 5V systems without level-shifting. |
| I²C Clock Frequency | 100 kHz maximum - ensures reliable communication on long traces or high-capacitance buses typical in industrial PCBs. |
| Write Cycle Time | 10 ms maximum - defines minimum interval between successive byte/page writes; impacts firmware latency during configuration updates. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - qualifies for infrequent but mission-critical calibration storage in field-deployed equipment. |
| Standby Current | 1.6 µA max at 2.7V - enables ultra-low-power operation in battery-backed or energy-harvesting applications. |
| Package | 8-lead JEDEC SOIC (8S1) - industry-standard footprint compatible with automated assembly and thermal reflow profiles. |
Pinout & Package
AT24C01A-10SC-2.7 is housed in an 8-lead JEDEC SOIC package (8S1), measuring 4.9 mm × 3.9 mm × 1.75 mm, with gull-wing leads and 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired address bit; tied low or high to select one of up to eight AT24C01A devices on shared I²C bus. |
| A1 | Device Address Input | Second hard-wired address bit; used with A0/A2 to configure unique 7-bit slave address (1010xx0). |
| A2 | Device Address Input | Third hard-wired address bit; completes 3-bit device identifier for multi-device I²C topology. |
| GND | Ground Reference | Return path for VCC and signal logic; must be low-impedance to ensure noise immunity on SDA/SCL lines. |
| VCC | Power Supply | Primary DC supply input (2.7–5.5V); bypass capacitor (0.1 µF) required near pin for stable I²C signaling. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC disables all write operations, preserving stored calibration or security keys. |
| SCL | Serial Clock Input | Master-generated clock (100 kHz); rising edge samples SDA, falling edge drives SDA - defines I²C timing window. |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up (typically 4.7 kΩ) to VCC for proper I²C bus arbitration. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 2.7V supply - eliminates need for voltage regulators in 3.3V-only designs. |
| Schmitt-trigger inputs | On SDA/SCL pins - rejects fast transients and EMI-induced glitches common in motor-driven or switching-power environments. |
| Hardware write protection | WP pin enables irreversible lock of memory contents - prevents accidental overwrites during firmware updates or brown-out events. |
| Page write mode | 8-byte burst writes reduce I²C transaction overhead by 87% vs. individual byte writes - accelerates bulk configuration loading. |
| High reliability | 1M write cycles + 100-year retention - meets extended service life requirements for medical, industrial, and automotive ECUs. |
Applications
| Industrial Sensor Calibration | Consumer Device Configuration |
|---|---|
Use Scenario: Storing temperature compensation coefficients and sensor offset values in factory-calibrated pressure transducers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed at power-up via I²C by host MCU; no external timing circuitry required. Use Value: Enables field-replaceable sensors with pre-loaded calibration data, eliminating per-unit firmware flashing during assembly. |
Use Scenario: Saving user preferences (brightness, volume, language) in smart thermostats across power cycles. IC Role / Device Role / Timing Role: Low-power I²C slave storing <1 KB of persistent settings; wakes only during UI update or boot sequence. Use Value: Reduces standby current to sub-µA levels while retaining full user experience continuity after AC loss. |
| Power Management Unit (PMU) | Embedded Controller Bootloader |
Use Scenario: Holding fault logs and runtime statistics (e.g., overvoltage events, thermal shutdown count) in telecom DC-DC modules. IC Role / Device Role / Timing Role: Write-once-per-event storage with WP pin asserted during normal operation to prevent corruption during power faults. Use Value: Provides traceable failure diagnostics without requiring host processor intervention or volatile RAM backup. |
Use Scenario: Storing secure boot keys and firmware signature hashes in industrial PLCs to enforce code authenticity. IC Role / Device Role / Timing Role: Read-only memory region protected by WP pin; accessed once during secure boot initialization. Use Value: Prevents unauthorized firmware modification by isolating cryptographic assets from writable flash memory domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02A-10SC-2.7 | 2K-bit capacity (256 × 8), same SOIC-8 package and 2.7–5.5V operation; identical timing and pinout. | Supports larger configuration sets (e.g., multi-channel sensor offsets); requires updated address pointer handling in firmware. | Select when future scalability or dual-parameter banks (e.g., active + backup) are needed without PCB change. |
| M24C01-RMN6TP | 1K-bit STMicroelectronics EEPROM; SOIC-8, 1.7–5.5V supply, 400 kHz max I²C speed; different WP polarity (active-low). | Enables faster bus throughput but requires firmware-level WP control inversion and voltage-level validation for 1.8V systems. | Choose for designs already using ST ecosystem or needing higher-speed I²C without changing layout. |
Compared with AT24C01A-10SC-2.7, AT24C02A-10SC-2.7 offers double memory depth with zero hardware changes, while M24C01-RMN6TP trades guaranteed 2.7V compatibility for higher speed and alternate vendor support - both require minor firmware adaptation but preserve board-level reuse.
Availability
AT24C01A-10SC-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer device configuration, power management unit logging, and embedded controller bootloader applications requiring stable component supply across extended product lifecycles.
Supply support for AT24C01A-10SC-2.7 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 AT24C family of serial EEPROMs.
The AT24C01A product line was designed specifically for cost-sensitive, space-constrained embedded systems requiring reliable nonvolatile storage with minimal external components and broad voltage compatibility.
FAQ
What is the maximum I²C clock frequency supported by AT24C01A-10SC-2.7?
The AT24C01A-10SC-2.7 supports up to 100 kHz I²C clock frequency when operating within its 2.7V–5.5V supply range. This is specified in the AC Characteristics table under fSCL for 2.7-/2.5-/1.8-volt versions. Exceeding this frequency may result in data corruption or failed acknowledge sequences due to timing margin violations.
Does AT24C01A-10SC-2.7 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C01A-10SC-2.7 requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. A typical value is 4.7 kΩ to VCC; selection depends on bus capacitance and desired rise time - values between 1 kΩ and 10 kΩ are commonly used in practice.
How does the Write Protect (WP) pin function on AT24C01A-10SC-2.7?
On AT24C01A-10SC-2.7, the WP pin is active-high: when tied to VCC, it disables all write operations (including page and byte writes) across the entire 1K memory array. When grounded, normal read/write functionality is enabled. This provides hardware-level protection against accidental or malicious overwrites.
Can AT24C01A-10SC-2.7 operate at 1.8V supply voltage?
No - AT24C01A-10SC-2.7 is rated for 2.7V to 5.5V operation only. For 1.8V systems, the correct variant is AT24C01A-10SC-1.8, which has separate characterization and qualification for that voltage range. Using AT24C01A-10SC-2.7 below 2.7V may cause unreliable I²C communication or incomplete writes.
What package type is used for AT24C01A-10SC-2.7?
AT24C01A-10SC-2.7 uses an 8-lead JEDEC SOIC package (designated 8S1), with 1.27 mm lead pitch, 4.9 mm × 3.9 mm body size, and gull-wing leads. This is confirmed in the Ordering Information table and Packaging Information section of the datasheet.
AT24C01A-10SC-2.7 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:
- 1Kbit
- Memory Organization:
- 128 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C01A-10SC-2.7 FAQ
1.How can I place an order for AT24C01A-10SC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01A-10SC-2.7 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 AT24C01A-10SC-2.7 reliable?
The price and inventory of AT24C01A-10SC-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01A-10SC-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C01A-10SC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01A-10SC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01A-10SC-2.7?
AT24C01A-10SC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01A-10SC-2.7 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 AT24C01A-10SC-2.7?
For technical support, including AT24C01A-10SC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01A-10SC-2.7 requirements.
6.How does Aetrix verify that AT24C01A-10SC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C01A-10SC-2.7 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 AT24C01A-10SC-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C01A-10SC-2.7?
All AT24C01A-10SC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01A-10SC-2.7, 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 AT24C01A-10SC-2.7 part is unused and in its original packaging.
Return procedure for AT24C01A-10SC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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