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Microchip Technology AT24C32N-10SI-2.7
- Part No.:
- AT24C32N-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C32N-10SI-2.7.pdf
- Description:
- IC EEPROM 32KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,429
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Product details
Overview
AT24C32N-10SI-2.7 from Microchip Technology (formerly Atmel) is a 32 Kbit I²C-compatible serial EEPROM organized as 4096 × 8 bits, operating from 2.7V to 5.5V, featuring hardware write protection via WP pin, 32-byte page write capability, and 100 kHz clock rate at 2.7V for industrial temperature range (–40°C to +85°C) applications in embedded control and sensor calibration systems.
For engineers reviewing the AT24C32N-10SI-2.7 datasheet, AT24C32N-10SI-2.7 pinout, AT24C32N-10SI-2.7 application, or AT24C32N-10SI-2.7 equivalent, key selection criteria include supply voltage compatibility (2.7–5.5 V), page write timing (≤10 ms), standby current (0.5 µA at 2.7 V), and JEDEC SOIC-8 packaging with A0–A2 address inputs for multi-device bus configuration.
Technical Context
The AT24C32N-10SI-2.7 implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA/SCL inputs and supports bidirectional data transfer using open-drain signaling. It uses an internal address counter for sequential reads and supports three addressing modes: current address, random, and sequential read.
Device addressing relies on hardwired or floating A0–A2 pins (internally pulled low when unconnected), enabling up to eight devices on one bus. Write protection is implemented via the WP pin, which disables writes to the upper quadrant (8 Kbits) when driven high, while allowing full write access when grounded.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 32,768 bits (4096 × 8), sufficient for firmware parameter storage or device configuration in microcontroller-based systems. |
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct integration with 3.3 V and 5 V logic domains without level shifting. |
| Interface | I²C (2-wire serial) - simplifies PCB routing with only two signal lines and supports multi-drop bus topology. |
| Write Cycle Time | Max 10 ms - defines minimum interval between successive write commands; impacts real-time logging latency. |
| Endurance | 1 million write cycles - ensures long-term reliability in field-updatable calibration or event-logging applications. |
| Data Retention | 100 years at +25°C - guarantees nonvolatile storage integrity over product lifetime without refresh. |
| Standby Current | 0.5 µA at VCC = 2.7 V - critical for battery-powered sensors and energy-harvesting nodes. |
Pinout & Package
AT24C32N-10SI-2.7 is supplied in an 8-pin JEDEC SOIC (8S1) package: 0.150" wide body, gull-wing leads, RoHS-compliant plastic encapsulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Configure unique I²C slave address (up to 8 devices); internally pulled low if unconnected. |
| SDA | Serial Data I/O | Bidirectional open-drain line; requires external pull-up; shared across multiple I²C peripherals. |
| SCL | Serial Clock Input | Master-generated clock; Schmitt-triggered for noise immunity in electrically noisy environments. |
| WP | Write Protect Control | Hardware lock: tied to VCC disables upper quadrant (8 Kbits) writes; tied to GND enables full write access. |
| GND | Ground Reference | Signal and power return path; must be low-impedance to ensure stable I²C signaling and EEPROM operation. |
| VCC | Power Supply | Primary supply input (2.7–5.5 V); decoupling capacitor required near pin to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Page Write Mode | 32-byte burst writes reduce I²C transaction overhead by >90% vs. byte-by-byte programming. |
| Noise-Suppressed Inputs | Schmitt-trigger + filtering on SDA/SCL enables reliable operation in industrial EMI environments (e.g., motor drives). |
| Hardware Write Protection | WP pin provides tamper-resistant safeguard for critical configuration data without software intervention. |
| Low-Voltage Operation | Guaranteed functionality down to 2.7 V supports brown-out resilience in 3.3 V systems during power sag. |
| Industrial Temperature Range | –40°C to +85°C operation validated per JEDEC JESD22-A108, suitable for automotive under-hood and factory automation. |
Applications
| Smart Sensor Calibration | Industrial PLC Configuration Storage |
|---|---|
|
Use Scenario: Storing factory-calibrated offset/gain coefficients and linearization tables for analog sensor front-ends. IC Role / Device Role / Timing Role: Nonvolatile parameter repository accessed during power-on initialization via I²C. Use Value: Enables plug-and-play sensor replacement without host MCU reprogramming; 1M endurance supports field recalibration. |
Use Scenario: Holding user-defined ladder logic parameters, I/O mapping, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent configuration store updated infrequently but requiring guaranteed retention across power cycles. Use Value: Eliminates need for battery-backed SRAM; WP pin prevents accidental overwrite during firmware updates. |
| Medical Device Settings Backup | IoT Edge Node Identity Storage |
|
Use Scenario: Saving patient-specific therapy settings and usage logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, low-power memory for regulatory-compliant audit trails and device personalization. Use Value: 100-year data retention meets FDA 21 CFR Part 11 long-term recordkeeping requirements. |
Use Scenario: Storing unique device identifiers (e.g., MAC, serial number), TLS certificates, and secure boot keys in battery-operated gateways. IC Role / Device Role / Timing Role: Tamper-resistant identity anchor accessible only via authenticated I²C session. Use Value: WP pin blocks unauthorized certificate modification; 0.5 µA standby current extends 10-year battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M24C32-WMN6TP | 32 Kbit, 1.7–5.5 V supply, 400 kHz max clock at 5 V, SOIC-8, same pinout, but lower standby current (100 nA typical at 5 V). | Preferred where ultra-low-power sleep mode dominates system duty cycle (e.g., wireless sensor nodes). | Select M24C32-WMN6TP if sub-µA standby is mandatory and 5 V operation is routine. |
| CAT24C32WI-GT3 | 32 Kbit, 1.8–5.5 V, 1 MHz clock support at 5 V, SOIC-8, identical pinout, but no WP pin - write protection is software-only. | Suitable for cost-sensitive consumer designs where hardware write lock is not required for safety or security. | Choose CAT24C32WI-GT3 only if WP functionality is unnecessary and higher-speed writes (1 MHz) are needed. |
Compared with AT24C32N-10SI-2.7, M24C32-WMN6TP offers superior ultra-low-power performance but lacks automotive qualification, while CAT24C32WI-GT3 trades hardware write protection for higher speed and lower cost - neither is pin-compatible drop-in replacement due to differing WP implementation and qualification scope.
Availability
AT24C32N-10SI-2.7 is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and IoT edge node designs requiring stable component supply, long-lifecycle assurance, and guaranteed traceability.
Supply support for AT24C32N-10SI-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 global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with broad industrial and automotive qualifications.
The AT24C32N-10SI-2.7 belongs to Microchip's legacy AT24Cxx serial EEPROM family, designed specifically for robust, low-power, I²C-based configuration and calibration storage in harsh-environment embedded systems.
FAQ
What is the maximum clock frequency supported by AT24C32N-10SI-2.7?
The AT24C32N-10SI-2.7 supports up to 100 kHz at 2.7 V, as specified in its AC characteristics table. This limit ensures reliable timing margins under low-voltage operation. At higher supply voltages (e.g., 5 V), the device can operate up to 400 kHz, but AT24C32N-10SI-2.7 is rated for 2.7–5.5 V and must be used within its designated 100 kHz limit when powered at 2.7 V. The AT24C32N-10SI-2.7 datasheet explicitly confirms this frequency ceiling for its -2.7 variant.
Does AT24C32N-10SI-2.7 support partial page writes?
Yes, AT24C32N-10SI-2.7 supports partial page writes: up to 32 bytes may be written in a single transaction, and fewer than 32 bytes (e.g., 1–31 bytes) can be sent consecutively without issuing a STOP condition between them. The internal address counter auto-increments within the 32-byte page boundary. This behavior is documented in the "Page Write" section of the AT24C32N-10SI-2.7 datasheet and enables efficient small-data updates without full-page erasure.
What happens when the WP pin of AT24C32N-10SI-2.7 is left unconnected?
When the WP pin of AT24C32N-10SI-2.7 is left unconnected, it is internally pulled down to GND, enabling full write access to all 32 Kbits of memory. This default state allows normal programming during development or field service. The AT24C32N-10SI-2.7 datasheet explicitly states that an unconnected WP pin results in write-enable behavior - no external pull-down resistor is required unless intentional floating-state ambiguity must be avoided in high-reliability designs.
Is AT24C32N-10SI-2.7 qualified for automotive applications?
No, AT24C32N-10SI-2.7 is rated for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. While the AT24C32/64 family includes automotive-grade variants (e.g., AT24C32D-SSHM-T), the AT24C32N-10SI-2.7 part number specifically denotes industrial-grade SOIC packaging with no automotive qualification. Its ordering information table confirms "Industrial" as the operation range, and no AEC test data appears in the AT24C32N-10SI-2.7 datasheet.
How many AT24C32N-10SI-2.7 devices can share the same I²C bus?
Up to eight AT24C32N-10SI-2.7 devices can share a single I²C bus using the A0, A1, and A2 address pins. Each pin can be hardwired to VCC or GND (or left floating, defaulting to logic low), yielding 2³ = 8 unique 3-bit device addresses. This cascading capability is confirmed in the AT24C32N-10SI-2.7 block diagram, pin description, and device addressing section - enabling scalable memory expansion without additional buses or address translators.
AT24C32N-10SI-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:
- 32Kbit
- Memory Organization:
- 4K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 10ms
- 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-SOIC
AT24C32N-10SI-2.7 FAQ
1.How can I place an order for AT24C32N-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C32N-10SI-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 AT24C32N-10SI-2.7 reliable?
The price and inventory of AT24C32N-10SI-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 AT24C32N-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C32N-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C32N-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C32N-10SI-2.7?
AT24C32N-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C32N-10SI-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 AT24C32N-10SI-2.7?
For technical support, including AT24C32N-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C32N-10SI-2.7 requirements.
6.How does Aetrix verify that AT24C32N-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C32N-10SI-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 AT24C32N-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C32N-10SI-2.7?
All AT24C32N-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C32N-10SI-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 AT24C32N-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT24C32N-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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