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Microchip Technology AT24C1024BN-SH-T
- Part No.:
- AT24C1024BN-SH-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C1024BN-SH-T.pdf
- Description:
- IC EEPROM 1MBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,169
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Product details
Overview
AT24C1024BN-SH-T from Microchip Technology (formerly Atmel) is a 1 Mbit (131,072 × 8) two-wire serial EEPROM with 1.8V operation (1.8V–3.6V), 400 kHz clock rate at 1.8V, and 256-byte page write capability. It features hardware write protection via the WP pin, Schmitt-trigger inputs for noise immunity, and supports up to four devices on a shared I²C bus using A1/A2 address inputs. It is used in industrial sensor calibration storage and embedded system configuration retention.
For engineers reviewing the AT24C1024BN-SH-T datasheet, AT24C1024BN-SH-T pinout, AT24C1024BN-SH-T application, or AT24C1024BN-SH-T equivalent, this page delivers verified electrical specs, JEDEC SOIC-8 package details, real-world use cases in low-power systems, and validated alternative parts for design continuity and supply chain resilience.
Technical Context
The AT24C1024BN-SH-T implements a standard I²C-compatible two-wire interface with open-drain SDA and edge-triggered SCL, supporting both random and sequential read modes plus byte/page write operations. Its internal architecture includes a 17-bit address counter, cascaded device addressing via A1/A2 pins, and an integrated high-voltage pump for EEPROM write cycling.
It operates across –40°C to +85°C with 1,000,000 write cycles per page and 40-year data retention. The device uses internal pull-down biasing on A1/A2 and WP when floating, and requires external pull-ups on SDA/SCL - compatible with standard microcontroller I²C peripherals without level-shifting at 1.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576 bits (131,072 × 8), enabling full firmware parameter sets or multi-sensor calibration tables in one device. |
| Supply Voltage Range | 1.8V to 3.6V - supports direct integration into 1.8V logic domains without voltage translation. |
| Max Clock Frequency | 400 kHz at 1.8V - ensures reliable timing margins in noise-prone industrial environments. |
| Page Write Size | 256 bytes - reduces write overhead vs. byte-write-only EEPROMs; enables efficient bulk configuration updates. |
| Write Endurance | 1,000,000 cycles per page - suitable for daily field-updatable calibration or logging applications over 10+ years. |
| Data Retention | 40 years at 85°C - guarantees long-term integrity of stored device identity, security keys, or factory settings. |
| Standby Current | 1.0 µA at 1.8V - critical for battery-powered IoT nodes where EEPROM must remain powered during sleep. |
Pinout & Package
AT24C1024BN-SH-T is packaged in an 8-lead JEDEC SOIC (package code 8S1), 0.150" wide body, NiPdAu lead finish, tape-and-reel format (4,000 units per reel). Pin 1 is marked with a notch or dot; leads are gull-wing, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Device Address Input | Hardwired high/low or left floating (internally pulled down); selects one of four possible addresses on shared I²C bus. |
| A2 | Device Address Input | Second address bit; used with A1 to enable up to four AT24C1024BN-SH-T devices on same bus without conflict. |
| GND | Ground Reference | Return path for VCC and all I/O; must be low-impedance to minimize noise coupling into SDA/SCL lines. |
| VCC | Power Supply | 1.8V–3.6V input; decoupling capacitor (0.1 µF ceramic) required within 5 mm for stable write/read operation. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC disables all writes; tied to GND enables full read/write access. |
| SCL | Serial Clock Input | Positive-edge sampled clock; requires external pull-up; defines timing for data sampling and ACK generation. |
| SDA | Serial Data I/O | Open-drain bidirectional line; shares bus with other I²C devices; requires external pull-up resistor (1.3 kΩ typical at 1.8V). |
| NC | No Connect | Unbonded pin; must remain unconnected - no routing or grounding allowed to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage 1.8V operation | Enables direct interfacing with ultra-low-power MCUs (e.g., ARM Cortex-M0+, MSP430) without level shifters. |
| Schmitt-trigger inputs | Rejects >100 ns noise pulses on SCL/SDA, eliminating false start/stop detection in electrically noisy industrial cabinets. |
| 256-byte page write mode | Reduces firmware update time by 95% vs. byte-write: 256 bytes written in one 5 ms cycle instead of 256 × 5 ms. |
| Hardware + software write protection | WP pin provides physical lockout; combined with software address-lock commands, prevents accidental overwrites during debug. |
| Cascadable 4-device addressing | Eliminates need for multiplexers or additional GPIOs when managing multiple EEPROMs in modular systems (e.g., multi-channel DAQ). |
Applications
| Industrial Sensor Calibration Storage | Medical Device Configuration Retention |
|---|---|
Use Scenario: Storing temperature, pressure, and offset coefficients for factory-calibrated sensors in HVAC control panels. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed at power-on reset; retains values across 10+ year product lifetime. Use Value: Eliminates manual recalibration; enables traceable NIST-compliant calibration data with 40-year retention guarantee. |
Use Scenario: Holding user-selected therapy parameters and safety thresholds in portable infusion pumps. IC Role / Device Role / Timing Role: Secure configuration vault; accessed only during boot and settings change - not during runtime delivery. Use Value: Ensures FDA-required parameter persistence after battery replacement or unexpected shutdown; WP pin prevents runtime corruption. |
| Smart Meter Firmware Parameterization | Automotive Body Control Module Settings |
Use Scenario: Storing tariff schedules, meter ID, and communication credentials in ANSI C12.19-compliant electricity meters. IC Role / Device Role / Timing Role: I²C-configurable memory mapped into MCU's peripheral space; updated via secure OTA commands. Use Value: Supports field-upgradable billing logic without firmware reflashing; 1Mbit capacity accommodates multi-tariff + crypto key storage. |
Use Scenario: Saving seat position, mirror angle, and lighting preferences in vehicle door modules. IC Role / Device Role / Timing Role: Low-power EEPROM accessed during ignition-on sequence; retains settings through battery disconnect events. Use Value: Achieves <1 µA standby current draw - meets ISO 16750-2 quiescent load requirements for automotive modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics M24C1024-RMN6TP | Same 1 Mbit density, 1.7–5.5V range, but rated for 1 MHz at 5V only; 3.5 ms typical write cycle vs. 5 ms. | Higher max clock supports faster host polling in 3.3V/5V systems; less suitable for strict 1.8V-only designs. | Select when operating above 3.0V and requiring marginally faster writes; verify WP pin behavior matches legacy firmware. |
| Renesas R1EX24102ASAS0I | 1 Mbit, 1.7–5.5V, supports 1 MHz at 1.8V; built-in error correction (ECC) and enhanced ESD rating (8 kV HBM). | ECC enables robustness in high-noise automotive ECUs; higher ESD tolerance simplifies board-level protection design. | Prefer for new automotive or medical designs requiring certified reliability; not drop-in due to different pinout (WP relocated). |
Compared with M24C1024-RMN6TP and R1EX24102ASAS0I, the AT24C1024BN-SH-T offers tighter 1.8V timing compliance and JEDEC SOIC-8 footprint compatibility with legacy Atmel-based platforms, while trading off ECC and higher-speed operation for cost-sensitive industrial deployments.
Availability
AT24C1024BN-SH-T is available at Aetrix Electronics and suitable for industrial sensor calibration storage, medical device configuration retention, and smart meter firmware parameterization requiring stable component supply and long-term lifecycle support.
Supply support for AT24C1024BN-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 acquired Atmel in 2016 and maintains full technical and manufacturing continuity for the AT24Cxx EEPROM family.
The AT24C1024BN-SH-T belongs to Microchip's serial EEPROM product line, engineered for ultra-low-power, high-reliability nonvolatile storage in space-constrained industrial and medical systems.
FAQ
What is the maximum clock frequency supported by AT24C1024BN-SH-T at 1.8V?
The AT24C1024BN-SH-T supports a maximum clock frequency of 400 kHz when operated at 1.8V. This value is characterized and specified in the AC characteristics table under industrial temperature conditions (–40°C to +85°C) with CL = 100 pF. Exceeding this frequency may result in unreliable ACK timing or data corruption during write cycles.
Does AT24C1024BN-SH-T require external pull-up resistors on SDA and SCL lines?
Yes, AT24C1024BN-SH-T requires external pull-up resistors on both SDA and SCL lines. The SDA pin is open-drain, and SCL is input-only with no internal pull-up. For 1.8V operation, a 10 kΩ pull-up is recommended; for 3.3V, 4.7 kΩ is typical. Values must be selected based on bus capacitance and desired rise time per I²C specification.
How many devices can share the same I²C bus with AT24C1024BN-SH-T?
Up to four AT24C1024BN-SH-T devices can share the same I²C bus using the A1 and A2 address input pins. Each device is assigned a unique 2-bit hardware address (00, 01, 10, or 11), allowing independent addressing without bus contention. The seventh bit (P0) of the device address also serves as a memory page selector.
What is the function of the NC pin on AT24C1024BN-SH-T in SOIC-8 package?
The NC (No Connect) pin on AT24C1024BN-SH-T is an unconnected, unbonded terminal. It must remain electrically floating - neither tied to GND, VCC, nor routed on PCB - to prevent parasitic coupling that could disrupt SDA/SCL signal integrity or induce latch-up. Its presence maintains mechanical symmetry in the SOIC-8 leadframe.
Can AT24C1024BN-SH-T retain data for 40 years at elevated temperatures?
AT24C1024BN-SH-T guarantees 40-year data retention at +85°C ambient temperature, as validated by accelerated life testing per JEDEC JESD22-A117. At higher temperatures (e.g., +105°C), retention drops exponentially; for extended high-temp operation, derating curves in the datasheet must be consulted to ensure required lifetime.
AT24C1024BN-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:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 550 ns
- Voltage - Supply:
- 1.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C1024BN-SH-T FAQ
1.How can I place an order for AT24C1024BN-SH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C1024BN-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 AT24C1024BN-SH-T reliable?
The price and inventory of AT24C1024BN-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 AT24C1024BN-SH-T is usually 5 days.
3.What payment methods are accepted for AT24C1024BN-SH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C1024BN-SH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C1024BN-SH-T?
AT24C1024BN-SH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C1024BN-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 AT24C1024BN-SH-T?
For technical support, including AT24C1024BN-SH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C1024BN-SH-T requirements.
6.How does Aetrix verify that AT24C1024BN-SH-T is sourced from the original manufacturer or authorized distributors?
All AT24C1024BN-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 AT24C1024BN-SH-T meets industry standards.
7.What is the process for return or replacement of AT24C1024BN-SH-T?
All AT24C1024BN-SH-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C1024BN-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 AT24C1024BN-SH-T part is unused and in its original packaging.
Return procedure for AT24C1024BN-SH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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