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Microchip Technology AT24C01A-10TU-2.7
- Part No.:
- AT24C01A-10TU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT24C01A-10TU-2.7.pdf
- Description:
- IC EEPROM 1KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,952
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Product details
Overview
AT24C01A-10TU-2.7 from Microchip Technology is a 1K-bit (128 × 8) two-wire serial EEPROM optimized for low-voltage industrial applications. It operates from 2.7V to 5.5V, supports 400 kHz I²C bus speed at 2.7V+, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention in an 8-lead TSSOP package.
For engineers reviewing the AT24C01A-10TU-2.7 datasheet, AT24C01A-10TU-2.7 pinout, AT24C01A-10TU-2.7 application, or AT24C01A-10TU-2.7 equivalent, key selection criteria include VCC range compatibility (2.7–5.5V), 8-byte page write capability, Schmitt-triggered noise-immune inputs, and TSSOP-8 footprint suitability for space-constrained embedded systems.
Technical Context
The AT24C01A-10TU-2.7 implements a standard I²C-compatible two-wire interface with open-drain SDA and edge-triggered SCL, supporting both byte and 8-byte page writes. Its internal address counter enables sequential reads across memory boundaries, while hardware write protection via the WP pin disables all write operations when pulled high.
It uses hard-wired A0–A2 device address pins to support up to eight devices on a single I²C bus, and incorporates Schmitt-triggered, filtered inputs for robust operation in electrically noisy environments. The device enters low-power standby mode after STOP condition receipt or power-up, drawing only 1.6 µA typical at 2.7V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 words × 8 bits), sufficient for small configuration storage or calibration data in microcontroller-based systems |
| Supply Voltage Range | 2.7V to 5.5V - compatible with 3.3V and 5V logic domains without level shifting |
| I²C Clock Frequency | Up to 400 kHz at ≥2.7V - enables fast parameter updates in real-time control loops |
| Write Cycle Time | Max 5 ms - defines minimum interval between successive write commands; impacts firmware retry logic design |
| Endurance | 1 million write cycles - supports frequent logging or dynamic parameter adjustment over product lifetime |
| Data Retention | 100 years at +25°C - ensures long-term reliability of stored settings without refresh |
| Package | 8-lead TSSOP (4.4 mm body) - surface-mount, RoHS-compliant, footprint-compatible with JEDEC MO-153 |
Pinout & Package
AT24C01A-10TU-2.7 is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP) per JEDEC MO-153, with 0.65 mm lead pitch and 4.4 mm body width. Pin 1 is marked by a notch or dot; leads are gull-wing shaped for standard reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired address bit; sets LSB of 7-bit I²C slave address (0x50–0x57) when used with A1/A2 |
| A1 | Device Address Input | Mid-bit of 3-bit hardware address; enables multi-device I²C bus topology with up to eight AT24C01A units |
| A2 | Device Address Input | MSB of 3-bit hardware address; determines unique I²C address alongside A0 and A1 |
| GND | Ground Reference | Return path for VCC and signal currents; must be low-impedance to ensure noise immunity |
| VCC | Power Supply | Primary supply input (2.7–5.5V); decoupling capacitor required within 10 mm for stable operation |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC to disable all writes; tied to GND for normal R/W access |
| SCL | Serial Clock Input | Positive-edge clock for data transfer; requires external pull-up; defines timing for read/write sequences |
| SDA | Serial Data I/O | Open-drain bidirectional line; shared across I²C bus; requires external pull-up resistor (typically 2.2–10 kΩ) |
Key Features
| Feature | Design Value |
|---|---|
| Two-wire Serial Interface | Fully compliant with I²C protocol - reduces PCB routing complexity and pin count vs. SPI or parallel EEPROMs |
| Schmitt Trigger Inputs | Enables reliable operation with slow-rising or noisy clock/data signals - eliminates false triggering in industrial environments |
| 8-byte Page Write Mode | Allows burst programming of up to 8 bytes per write cycle - improves firmware update efficiency vs. single-byte writes |
| Hardware Write Protection | WP pin provides fail-safe data integrity - prevents accidental overwrites during power transients or firmware faults |
| Low Standby Current | 1.6 µA typical at 2.7V - extends battery life in portable or energy-harvesting applications |
Applications
| Industrial Sensor Calibration | Consumer Remote Control Memory |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for temperature, pressure, or humidity sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed at system boot; no timing-critical interaction during runtime. Use Value: Ensures measurement accuracy across product lifetime without requiring recalibration; leverages 100-year retention and 1M-cycle endurance. | Use Scenario: Retaining user-programmed channel presets, volume levels, and IR code mappings in universal remote controls. IC Role / Device Role / Timing Role: Low-power persistent memory updated infrequently; accessed only during setup or power-on initialization. Use Value: Enables instant recall of settings after battery replacement; benefits from 1.6 µA standby current and 2.7V operation. |
| Medical Device Configuration | Automotive Body Control Module |
Use Scenario: Saving user-selected therapy parameters (e.g., infusion rate, alarm thresholds) in portable insulin pumps or nebulizers. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage with hardware write protection enabled during normal operation. Use Value: WP pin prevents unintended changes during device use; 2.7–5.5V range matches common medical battery stacks. | Use Scenario: Storing seat position memory, mirror angle presets, and lighting profiles in automotive door modules. IC Role / Device Role / Timing Role: I²C slave on vehicle body network; written during service mode, read at power-up. Use Value: TSSOP-8 package fits compact module layouts; 400 kHz bus speed supports rapid configuration loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C01B-SSHM-T | Successor part with enhanced ESD rating (4 kV HBM), same 1K capacity, 2.5–5.5V range, and TSSOP-8 package | Designed for newer designs requiring higher robustness; not drop-in due to voltage range shift | Select AT24C01B-SSHM-T for new designs needing improved ESD immunity and extended lifecycle support |
| CAT24C01HU2I-GT3 | 1K I²C EEPROM from onsemi; identical 2.7–5.5V range, 400 kHz speed, TSSOP-8, and 1M/100yr specs | Pin- and function-compatible; qualified for automotive AEC-Q100 Grade 2 (−40°C to +105°C) | Choose CAT24C01HU2I-GT3 when automotive qualification or dual-sourcing is required |
Compared with AT24C01A-10TU-2.7, the AT24C01B-SSHM-T offers higher ESD tolerance but narrower VCC range, while CAT24C01HU2I-GT3 provides identical electrical specs plus AEC-Q100 qualification-making it suitable for automotive BOMs where qualification matters more than legacy compatibility.
Availability
AT24C01A-10TU-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer remote control memory, medical device configuration, and automotive body control modules requiring stable component supply and long-term obsolescence management.
Supply support for AT24C01A-10TU-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 is a leading provider of microcontrollers, analog components, and memory solutions, serving industrial, automotive, and consumer markets with high-reliability silicon and development tools.
The AT24C01A-10TU-2.7 belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, low-power embedded systems requiring simple, robust nonvolatile storage with minimal board space.
FAQ
What is the maximum I²C clock frequency supported by AT24C01A-10TU-2.7?
The AT24C01A-10TU-2.7 supports up to 400 kHz I²C clock frequency when operated at VCC ≥ 2.7V. At lower voltages (e.g., 1.8V), the maximum rated speed drops to 100 kHz - but since AT24C01A-10TU-2.7 is specified for 2.7–5.5V operation, 400 kHz is its full-speed capability. This allows efficient parameter updates in time-sensitive applications without requiring protocol translation.
Does AT24C01A-10TU-2.7 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C01A-10TU-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 requirements. Without pull-ups, the AT24C01A-10TU-2.7 cannot drive high logic levels, resulting in communication failure.
How does the Write Protect (WP) pin function on AT24C01A-10TU-2.7?
When the WP pin of AT24C01A-10TU-2.7 is driven high (to VCC), all write operations - including byte, page, and erase - are disabled, protecting the entire 1K memory array. When WP is grounded, normal read and write functions operate. This hardware-level lock prevents accidental overwrites during power-up transients or firmware errors, enhancing system reliability.
What is the memory organization of AT24C01A-10TU-2.7?
The AT24C01A-10TU-2.7 contains 1024 bits organized as 128 words × 8 bits. Internally, it is divided into 16 pages of 8 bytes each. This structure enables 8-byte page writes and supports random addressing using a 7-bit word address. The page architecture optimizes write efficiency while maintaining compatibility with standard I²C EEPROM drivers.
Is AT24C01A-10TU-2.7 RoHS-compliant and halogen-free?
Yes, AT24C01A-10TU-2.7 is RoHS-compliant and halogen-free, as indicated by the "U" suffix in its ordering code. It meets EU Directive 2011/65/EU and associated exemptions, and is manufactured using lead-free solderable terminations. This compliance supports environmentally regulated deployments in industrial, medical, and consumer electronics markets.
AT24C01A-10TU-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-10TU-2.7 FAQ
1.How can I place an order for AT24C01A-10TU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01A-10TU-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-10TU-2.7 reliable?
The price and inventory of AT24C01A-10TU-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-10TU-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C01A-10TU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01A-10TU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01A-10TU-2.7?
AT24C01A-10TU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01A-10TU-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-10TU-2.7?
For technical support, including AT24C01A-10TU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01A-10TU-2.7 requirements.
6.How does Aetrix verify that AT24C01A-10TU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C01A-10TU-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-10TU-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C01A-10TU-2.7?
All AT24C01A-10TU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01A-10TU-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-10TU-2.7 part is unused and in its original packaging.
Return procedure for AT24C01A-10TU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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