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Microchip Technology AT24C01A-10TI-2.7
- Part No.:
- AT24C01A-10TI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT24C01A-10TI-2.7.pdf
- Description:
- IC EEPROM 1KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,929
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Product details
Overview
AT24C01A-10TI-2.7 from Microchip Technology (formerly Atmel) is a 1K-bit (128 × 8) I²C-compatible 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 the WP pin, and delivers 1 million write cycles with 100-year data retention - used in industrial sensor calibration storage and power-management configuration backup.
For engineers reviewing the AT24C01A-10TI-2.7 datasheet, AT24C01A-10TI-2.7 pinout, AT24C01A-10TI-2.7 application, or AT24C01A-10TI-2.7 equivalent, key selection criteria include its industrial temperature range (−40°C to +85°C), 8-byte page write capability, SOIC/TSSOP/PDIP package compatibility, and Schmitt-triggered noise-immune I²C interface.
Technical Context
The AT24C01A-10TI-2.7 implements a standard two-wire I²C interface with open-drain SDA and edge-triggered SCL, supporting device addressing via A0–A2 pins (all hardwired for 1K/2K variants). Its internal architecture organizes memory as 16 pages of 8 bytes each, requiring a 7-bit word address for random access.
Write operations are self-timed (≤10 ms), with hardware write protection activated when WP = VCC. Standby current is 4 µA at 2.7V, and inputs feature Schmitt-triggered logic with filtered noise suppression - enabling reliable operation in electrically noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), organized in 16 pages of 8 bytes - enables compact firmware parameter storage without external address latching. |
| 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 max - ensures timing compliance with legacy controllers and reduces EMI in noise-sensitive applications. |
| Write Cycle Time | ≤10 ms - defines minimum interval between successive writes; requires polling or timeout handling in host firmware. |
| Endurance | 1 million write cycles - guarantees long-term reliability for frequently updated calibration or logging data. |
| Data Retention | 100 years at +25°C - ensures nonvolatile storage integrity across product lifecycle without refresh. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade deployment in motor drives, PLCs, and outdoor instrumentation. |
Pinout & Package
AT24C01A-10TI-2.7 is supplied in an 8-lead JEDEC SOIC (8S1) package - 0.150" wide, gull-wing leads, RoHS-compliant, footprint-compatible with industry-standard SOIC-8 footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired address bits; all three used for 1K/2K devices - allows up to eight AT24C01A units on one I²C bus. |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up - enables wired-AND bus sharing with other I²C peripherals. |
| SCL | Serial Clock Input | Positive-edge clock input for data sampling - synchronizes all read/write transfers with master controller timing. |
| WP | Write Protect Control | Active-high hardware lock; disables all write operations when tied to VCC - prevents accidental overwrites during power transitions. |
| VCC | Power Supply | Primary supply input (2.7–5.5V); powers internal logic and memory array - decoupling capacitor required per layout guidelines. |
| GND | Ground Reference | Signal and power return path - must be connected to system ground plane with low-impedance trace. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 2.7V supply - eliminates need for voltage regulators in battery-powered or energy-harvesting nodes. |
| Schmitt-trigger inputs | Input hysteresis on SCL/SDA - rejects fast transients and improves noise immunity in industrial motor-control environments. |
| Hardware write protection | Dedicated WP pin with VCC/GND logic-level enable - provides fail-safe data integrity independent of firmware state. |
| Page write mode | 8-byte burst writes per command - reduces I²C transaction overhead by 87% vs. individual byte writes for block updates. |
| High-reliability endurance | 1M write cycles rated at 25°C - supports daily recalibration logging for >2700 years before wear-out threshold. |
Applications
| Industrial Sensor Calibration | Embedded Power Management |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed at boot via I²C; no timing-critical latency requirement. Use Value: Eliminates manual potentiometer adjustment and enables field recalibration without hardware modification. |
Use Scenario: Holding last-known state of DC-DC converter settings (voltage, current limit, soft-start) across cold resets in telecom power modules. IC Role / Device Role / Timing Role: Low-power persistent memory with <4 µA standby draw - preserves settings during extended sleep modes. Use Value: Ensures seamless power restoration without reinitialization delays or configuration loss after brownout events. |
| Smart Meter Firmware Patch Storage | Medical Device Configuration Backup |
Use Scenario: Securely storing minor firmware patch metadata (version, CRC, activation flag) in utility smart meters with constrained MCU resources. IC Role / Device Role / Timing Role: Read-only auxiliary memory during bootloader execution; accessed once per boot cycle. Use Value: Enables field-upgradable behavior without modifying main flash, reducing certification burden for minor updates. |
Use Scenario: Backing up user-adjusted therapy parameters (flow rate, pressure limits, alarm thresholds) in portable infusion pumps. IC Role / Device Role / Timing Role: Safety-critical nonvolatile storage with 100-year retention - retains settings through battery replacement and sterilization cycles. Use Value: Meets IEC 62304 Class B software requirements for persistent configuration integrity and auditability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02A-10TI-2.7 | 2K-bit capacity (256 × 8), same 8-byte page size and 2.7–5.5V operation - identical pinout and timing. | Supports larger configuration sets; requires no PCB change but may increase cost where 1K is sufficient. | Select when future firmware expansion or multi-sensor calibration data exceeds 128 bytes. |
| M24C01-RMN6TP | 1K-bit STMicroelectronics EEPROM; 100 kHz I²C, −40°C to +85°C, SOIC-8 - same voltage range but higher 10 µA standby current at 2.7V. | Valid drop-in for space-constrained designs; lacks A0–A2 address flexibility in multi-device buses. | Prefer when sourcing diversity is required and board-level validation time is limited. |
Compared with AT24C01A-10TI-2.7, the AT24C02A-10TI-2.7 offers double memory without layout changes, while the M24C01-RMN6TP trades slightly higher standby current for second-source availability - both retain full functional equivalence for calibration and configuration use cases.
Availability
AT24C01A-10TI-2.7 is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and smart metering applications requiring stable component supply across extended product lifecycles.
Supply support for AT24C01A-10TI-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 series EEPROMs - a globally deployed, qualification-verified memory portfolio.
The AT24C01A belongs to Microchip's serial EEPROM product line, designed specifically for robust, low-power, I²C-based configuration and calibration storage in industrial, automotive, and medical systems.
FAQ
What is the maximum I²C clock frequency supported by the AT24C01A-10TI-2.7?
The AT24C01A-10TI-2.7 supports up to 100 kHz I²C clock frequency under its 2.7V–5.5V operating range. This is specified in the AC Characteristics table for 2.7-, 2.5-, and 1.8-volt versions. Higher speeds (e.g., 400 kHz) apply only to the 5.0V variant (AT24C01A-10TI), not the -2.7 suffix version. Host firmware must enforce this limit to ensure reliable communication.
Does the AT24C01A-10TI-2.7 require external pull-up resistors on SDA and SCL lines?
Yes, the AT24C01A-10TI-2.7 requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed; Microchip recommends 4.7 kΩ for standard-mode (100 kHz) operation with ≤400 pF total bus capacitance.
How does the Write Protect (WP) pin function on the AT24C01A-10TI-2.7?
On the AT24C01A-10TI-2.7, the WP pin enables hardware write protection: when pulled high to VCC, all write operations (byte and page) to the entire 1K memory array are blocked. When grounded, normal read/write functionality is restored. This behavior is defined in the WP Pin Status table and requires no firmware intervention - making it ideal for fail-safe configuration locking.
What package types are available for the AT24C01A-10TI-2.7?
The AT24C01A-10TI-2.7 is offered exclusively in the 8-lead JEDEC SOIC (8S1) package - 0.150" wide, gull-wing leads, compliant with IPC-7351B standards. While the AT24C01A family also includes PDIP and TSSOP variants, the -TI-2.7 suffix specifically denotes the industrial-grade SOIC version per Atmel's ordering information table.
Is the AT24C01A-10TI-2.7 compatible with 1.8V I²C systems?
No - the AT24C01A-10TI-2.7 is rated for 2.7V to 5.5V operation only. For 1.8V systems, Microchip offers the AT24C01A-10TI-1.8 variant, which has distinct DC and AC specifications (e.g., lower ICC, adjusted VIH/VIL thresholds). Using the -2.7 version below 2.7V risks unreliable reads/writes and violates absolute maximum ratings.
AT24C01A-10TI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT24C01A-10TI-2.7 FAQ
1.How can I place an order for AT24C01A-10TI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01A-10TI-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-10TI-2.7 reliable?
The price and inventory of AT24C01A-10TI-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-10TI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C01A-10TI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01A-10TI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01A-10TI-2.7?
AT24C01A-10TI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01A-10TI-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-10TI-2.7?
For technical support, including AT24C01A-10TI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01A-10TI-2.7 requirements.
6.How does Aetrix verify that AT24C01A-10TI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C01A-10TI-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-10TI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C01A-10TI-2.7?
All AT24C01A-10TI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01A-10TI-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-10TI-2.7 part is unused and in its original packaging.
Return procedure for AT24C01A-10TI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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