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Microchip Technology AT24C01BN-SH-T
- Part No.:
- AT24C01BN-SH-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C01BN-SH-T.pdf
- Description:
- IC EEPROM 1KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,134
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Product details
Overview
AT24C01BN-SH-T from Microchip Technology is a 1K-bit (128 × 8) two-wire serial EEPROM with 1.8V to 5.5V operation, 400 kHz/1 MHz I²C interface speed, hardware write protection via WP pin, and 8-lead SOIC (8S1) package with NiPdAu lead finish. It delivers nonvolatile data storage for embedded control, sensor calibration, and configuration retention in industrial and consumer systems.
For engineers reviewing the AT24C01BN-SH-T datasheet, AT24C01BN-SH-T pinout, AT24C01BN-SH-T application, or AT24C01BN-SH-T equivalent, key selection criteria include its 1.8V low-voltage compatibility, 1 million write cycles endurance, 100-year data retention, page-write capability, and Schmitt-triggered noise-immune SDA/SCL inputs.
Technical Context
The AT24C01BN-SH-T implements a standard I²C-compatible two-wire interface with addressable device addressing (A0–A2), bidirectional SDA line, and synchronous SCL clock. Its internal architecture includes a 128-word × 8-bit EEPROM array, serial control logic, high-voltage pump for write operations, and automatic self-timed write cycle completion (≤5 ms).
It supports partial and full page writes (8-byte pages), features input filtering and Schmitt-trigger inputs for robustness in noisy environments, and uses hardware-based write protection via the dedicated WP pin - active when pulled high - to prevent accidental overwrites of memory contents.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), enabling compact configuration storage without external address latches |
| Interface | Two-wire I²C (SCL/SDA), compatible with standard microcontroller I²C peripherals and bus arbitration |
| Write Speed | Max 1 MHz at 5V; 400 kHz at 1.8V/2.5V/2.7V - ensures timing compliance across voltage scaling |
| Endurance | 1 million write cycles per byte - supports frequent recalibration or logging in field-deployed devices |
| Data Retention | 100 years at +25°C - guarantees long-term integrity of stored calibration, serial numbers, or firmware flags |
| Supply Range | 1.8V to 5.5V - interoperable with 1.8V logic, 3.3V MCU domains, and legacy 5V systems |
| Write Protection | Hardware WP pin - enables irreversible lock of memory regions during power-up or runtime |
Pinout & Package
AT24C01BN-SH-T is packaged in an 8-lead JEDEC SOIC (8S1), 0.150" wide, with NiPdAu lead finish. Pin 1 is marked by a beveled corner or notch on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Enable up to eight AT24C01BN-SH-T devices on same I²C bus via hardwired binary address |
| SDA | Serial Data I/O | Bidirectional open-drain line requiring external pull-up; carries address, command, and data |
| SCL | Serial Clock Input | Master-generated clock synchronizing all I²C transactions; Schmitt-triggered for noise immunity |
| WP | Write Protect Input | Active-high signal disabling all write operations when asserted - prevents corruption during brown-out |
| GND | Ground Reference | Return path for VCC and all I/O; must be low-impedance to minimize ground bounce during writes |
| VCC | Power Supply | Single supply input (1.8–5.5V); decoupling capacitor required near pin for stable write-cycle voltage |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 1.8V - enables direct interfacing with ultra-low-power MCUs and battery-backed systems |
| Noise-Immune Inputs | Schmitt-trigger + RC filtering on SDA/SCL - eliminates false clock/data transitions in EMI-prone industrial enclosures |
| Page Write Mode | 8-byte burst writes reduce I²C transaction overhead and total write time vs. byte-by-byte programming |
| Self-Timed Write Cycle | Internal timing eliminates need for host polling or fixed delays - simplifies firmware implementation |
| Lead-Free/Halogen-Free | Complies with RoHS Directive 2011/65/EU and JEDEC JS709C - suitable for green manufacturing and export |
Applications
| Industrial Sensor Calibration | Consumer Device Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients and temperature compensation tables in pressure or humidity sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter storage IC accessed during power-on initialization via I²C. Use Value: Enables plug-and-play accuracy without host-side calibration routines; retains values across 100+ years and 1M write cycles. | Use Scenario: Saving user preferences (brightness, volume, language) and device-specific settings in smart home hubs or audio accessories. IC Role / Device Role / Timing Role: Persistent configuration memory mapped into system firmware's boot-time read sequence. Use Value: Survives battery removal and firmware updates; operates reliably at 1.8V to extend coin-cell life in portable devices. |
| Medical Diagnostic Equipment | Automotive Body Control Modules |
Use Scenario: Recording usage logs, error history, and calibration timestamps in portable glucose meters or pulse oximeters. IC Role / Device Role / Timing Role: Secure, tamper-resistant data logger using WP pin to lock critical diagnostic records. Use Value: Meets IEC 62304 Class B software requirements for data integrity; withstands repeated sterilization cycles. | Use Scenario: Storing seat position memory, mirror presets, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: I²C slave device interfaced to 3.3V automotive microcontroller with extended temperature support. Use Value: Qualified for –40°C to +85°C operation; WP pin prevents unintended rewrites during CAN bus transients or load dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics M24C01-RMN6TP | Same 1K-bit capacity, 1.8–5.5V, 400 kHz I²C; different SOIC pinout (pin 1 = VCC, not A0) | Requires PCB layout revision due to swapped VCC/A0 positions; no WP pin - software-only write protection | Select only if redesigning board and accepting loss of hardware-level write lock |
| ON Semiconductor CAT24C01HU4I-GT3 | Identical 1K-bit, 1.8–5.5V, 400 kHz I²C; same 8-lead SOIC package and pinout; WP pin present | Drop-in replacement with identical footprint, timing, and functional behavior; qualified to AEC-Q100 Grade 3 | Preferred for automotive-grade designs requiring extended reliability validation |
Compared with AT24C01BN-SH-T, M24C01-RMN6TP lacks hardware write protection and requires layout changes, while CAT24C01HU4I-GT3 offers identical functionality plus AEC-Q100 qualification - making it ideal for automotive BOMs where qualification traceability is mandatory.
Availability
AT24C01BN-SH-T is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer device configuration, and automotive body control modules requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for AT24C01BN-SH-T 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 U.S.-based semiconductor company specializing in microcontrollers, analog components, and memory solutions, with global manufacturing and quality certifications including ISO 9001 and IATF 16949.
The AT24C01BN-SH-T belongs to Microchip's AT24Cxx family of I²C-compatible serial EEPROMs, designed specifically for reliable, low-power, and space-constrained nonvolatile storage in industrial, medical, and automotive applications.
FAQ
What is the operating voltage range of the AT24C01BN-SH-T?
The AT24C01BN-SH-T operates from 1.8V to 5.5V, supporting single-supply integration across 1.8V logic families, 3.3V microcontrollers, and legacy 5V systems. This wide range eliminates level-shifting requirements in mixed-voltage designs and ensures compatibility with battery-powered devices down to coin-cell voltages.
Does the AT24C01BN-SH-T support page writes, and what is the page size?
Yes, the AT24C01BN-SH-T supports 8-byte page writes, allowing up to eight sequential bytes to be written in a single I²C transaction. This reduces bus overhead and total programming time compared to byte-wise writes, improving efficiency in firmware update or calibration data loading sequences.
How does the WP pin function on the AT24C01BN-SH-T?
The WP (Write Protect) pin on the AT24C01BN-SH-T is an active-high input that disables all write operations - including byte, page, and erase commands - when driven high. This hardware lock prevents accidental or malicious overwrites during power transitions, brown-out conditions, or firmware faults, ensuring memory integrity without software intervention.
What is the maximum I²C clock frequency supported by the AT24C01BN-SH-T at different supply voltages?
The AT24C01BN-SH-T supports up to 1 MHz I²C clock frequency at VCC = 5.0V, and 400 kHz at VCC = 1.8V, 2.5V, or 2.7V. These speed grades are guaranteed across the full industrial temperature range (–40°C to +85°C), enabling optimized throughput based on system voltage and noise environment.
Is the AT24C01BN-SH-T qualified for automotive applications?
The AT24C01BN-SH-T itself is rated for industrial temperature (–40°C to +85°C) and RoHS compliance but is not AEC-Q200 qualified. For automotive use cases, Microchip recommends the pin-compatible CAT24C01HU4I-GT3 (ON Semiconductor) or AT24C01C-SSHM-T (Microchip's AEC-Q100 Grade 3 variant), both validated for under-hood and body-control module environments.
AT24C01BN-SH-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 550 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C01BN-SH-T FAQ
1.How can I place an order for AT24C01BN-SH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01BN-SH-T 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 AT24C01BN-SH-T reliable?
The price and inventory of AT24C01BN-SH-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C01BN-SH-T is usually 5 days.
3.What payment methods are accepted for AT24C01BN-SH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01BN-SH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01BN-SH-T?
AT24C01BN-SH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01BN-SH-T 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 AT24C01BN-SH-T?
For technical support, including AT24C01BN-SH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01BN-SH-T requirements.
6.How does Aetrix verify that AT24C01BN-SH-T is sourced from the original manufacturer or authorized distributors?
All AT24C01BN-SH-T 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 AT24C01BN-SH-T meets industry standards.
7.What is the process for return or replacement of AT24C01BN-SH-T?
All AT24C01BN-SH-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01BN-SH-T, 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 AT24C01BN-SH-T part is unused and in its original packaging.
Return procedure for AT24C01BN-SH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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