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Microchip Technology AT24C32N-10SI-1.8
- Part No.:
- AT24C32N-10SI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C32N-10SI-1.8.pdf
- Description:
- IC EEPROM 32KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,707
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Product details
Overview
AT24C32N-10SI-1.8 from Microchip Technology (formerly Atmel) is a 32K-bit (4096 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 1.8V to 5.5V, supports 100 kHz clock rate at 1.8V, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention. It is widely used in industrial sensor calibration storage and power-management configuration memory.
For engineers reviewing the AT24C32N-10SI-1.8 datasheet, AT24C32N-10SI-1.8 pinout, AT24C32N-10SI-1.8 application, or AT24C32N-10SI-1.8 equivalent, key selection criteria include 1.8V minimum supply compatibility, 32-byte page write capability, Schmitt-triggered noise-immune I²C interface, and JEDEC SOIC-8 packaging for space-constrained PCBs.
Technical Context
The AT24C32N-10SI-1.8 implements a standard two-wire (I²C) serial interface with open-drain SDA and edge-triggered SCL, supporting bidirectional data transfer and device addressing via A0–A2 pins. Its internal architecture organizes memory as 256 pages of 32 bytes each, enabling partial-page writes without erasing adjacent data.
It integrates a low-power standby mode (ISB = 0.1 µA at 1.8V), on-chip voltage detection for noise immunity, and hardware-based write protection that disables writes to the upper quadrant (8K bits) when WP is tied high. All timing parameters-including tWR (10 ms max), tLOW (4.7 µs at 1.8V), and VOL1 (0.2 V at 1.8V/0.15 mA)-are fully specified for 1.8V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 32,768 bits (4096 × 8), organized as 256 pages × 32 bytes - enables efficient firmware parameter storage with page-level granularity. |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V logic families and mixed-voltage systems without level shifters. |
| I²C Clock Rate | 100 kHz at 1.8V - ensures reliable communication in ultra-low-power microcontroller applications where higher speeds are unavailable. |
| Write Cycle Time | 10 ms maximum - defines minimum interval between write commands; critical for real-time logging and configuration update scheduling. |
| Endurance | 1 million write cycles - guarantees long-term reliability in frequently updated settings such as energy meter calibration or HVAC runtime counters. |
| Data Retention | 100 years at +25°C - ensures nonvolatile storage integrity across product lifecycles without refresh or backup power. |
| Standby Current | 0.1 µA at 1.8V - minimizes quiescent power draw in battery-powered devices like smart sensors and wearables. |
Pinout & Package
AT24C32N-10SI-1.8 is supplied in an 8-pin JEDEC SOIC (8S1) package: 0.150" wide body, gull-wing leads, 1.27 mm pitch, RoHS-compliant plastic encapsulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired or floating address bits enabling up to eight devices on one I²C bus; internally pulled low if unconnected. |
| SDA | Serial Data I/O | Open-drain bidirectional line for data transfer; requires external pull-up resistor and supports wire-OR with other I²C devices. |
| SCL | Serial Clock Input | Positive-edge clock input for data-in; negative-edge sampling for data-out - defines I²C timing synchronization point. |
| WP | Write Protect Control | Hardware-enforced lock for upper 8K bits; tied to VCC to prevent accidental overwrites during firmware updates or brownout conditions. |
| VCC | Power Supply | Primary supply rail (1.8–5.5V); powers internal logic and memory array - must be stable during write cycles to avoid corruption. |
| GND | Ground Reference | Return path for all internal circuits and I/O; decoupling capacitor placement near this pin is essential for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs on SDA/SCL | Enables robust operation in electrically noisy environments (e.g., motor drives, industrial PLCs) by rejecting sub-threshold noise spikes. |
| 32-byte page write mode | Reduces I²C transaction overhead and improves write efficiency versus byte-by-byte programming - critical for burst configuration saves. |
| Self-timed internal write cycle | Eliminates need for external timing control; host MCU can poll ACK or wait fixed 10 ms before next command. |
| Hardware write protection (WP pin) | Prevents unintended modification of critical calibration or security data without software intervention or firmware changes. |
| 1.8V–5.5V operating range | Supports direct integration into modern ultra-low-power SoCs and MCUs (e.g., ARM Cortex-M0+, RISC-V) without voltage translation circuitry. |
Applications
| Industrial Sensor Calibration | Smart Energy Metering |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients and temperature compensation tables for analog sensor front-ends. IC Role / Device Role / Timing Role: Nonvolatile configuration memory holding persistent sensor characterization data accessed at power-up. Use Value: Enables plug-and-play sensor replacement without field recalibration; leverages 100-year retention to outlive equipment lifetime. |
Use Scenario: Recording tariff schedules, billing registers, and tamper-event logs in residential/utility electricity meters. IC Role / Device Role / Timing Role: Secure, low-power parameter and event log storage synchronized with metrology IC interrupts. Use Value: Guarantees data integrity during mains dropout using 0.1 µA standby current and 1M-cycle endurance for daily logging. |
| Automotive Body Control Module | IoT Edge Node Configuration |
Use Scenario: Saving user preferences (mirror position, seat settings) and diagnostic trouble code (DTC) history in 12V automotive subsystems. IC Role / Device Role / Timing Role: I²C-configurable EEPROM interfaced directly to 3.3V or 5V microcontrollers in extended-temperature (-40°C to +85°C) environments. Use Value: Meets AEC-Q100 stress requirements via automotive-grade qualification; WP pin prevents corruption during load-dump transients. |
Use Scenario: Storing network credentials (Wi-Fi SSID/password), firmware update flags, and device-specific identifiers in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Low-voltage (1.8V) serial memory enabling direct connection to ultra-low-power wireless SoCs (e.g., Nordic nRF52, Silicon Labs EFR32). Use Value: Eliminates level-shifter components and reduces BOM cost while maintaining full I²C functionality at minimum system voltage. |
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 | 32K-bit I²C EEPROM, 1.7–5.5V supply, 400 kHz max clock at 5V only; no 100 kHz guarantee at 1.8V. | Lacks guaranteed 100 kHz operation below 2.5V - unsuitable for 1.8V-only systems requiring full-speed I²C. | Select only if system operates ≥2.5V and prioritizes higher clock speed over lowest-voltage compatibility. |
| BR24G32FJ-WE2 | 32K-bit I²C EEPROM, 1.6–5.5V supply, 1 MHz max clock, built-in error correction (ECC), 1.2 µA standby at 1.8V. | Higher standby current than AT24C32N-10SI-1.8 (0.1 µA); ECC adds fault tolerance but increases cost and complexity. | Choose when data integrity under radiation or voltage glitch is critical, and 1.2 µA standby is acceptable. |
Compared with M24C32-WMN6TP and BR24G32FJ-WE2, the AT24C32N-10SI-1.8 uniquely guarantees 100 kHz I²C operation down to 1.8V with industry-leading 0.1 µA standby current - making it optimal for battery-constrained, low-voltage embedded designs where timing predictability and power efficiency are primary constraints.
Availability
AT24C32N-10SI-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, smart energy metering, and automotive body control modules requiring stable component supply, long-lifecycle support, and guaranteed 1.8V operation.
Supply support for AT24C32N-10SI-1.8 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 memory solutions, with a focus on embedded control and connectivity.
The AT24C32N-10SI-1.8 belongs to Microchip's legacy AT24C serial EEPROM family, designed specifically for cost-sensitive, low-power, and space-constrained applications requiring reliable nonvolatile storage with minimal external components.
FAQ
What is the minimum operating voltage for the AT24C32N-10SI-1.8?
The AT24C32N-10SI-1.8 is rated for operation from 1.8V to 5.5V. Its 100 kHz I²C clock rate, 0.1 µA standby current, and full DC/AC specifications are guaranteed at 1.8V - unlike many competing EEPROMs that only specify performance above 2.5V. This makes the AT24C32N-10SI-1.8 suitable for direct integration with 1.8V logic families without level shifting.
Does the AT24C32N-10SI-1.8 support page write operations?
Yes, the AT24C32N-10SI-1.8 supports 32-byte page write mode, allowing up to 32 bytes to be written in a single I²C transaction. This significantly improves write efficiency compared to byte-wise programming. The internal address counter auto-increments within the page boundary, and rollover occurs only after the 32nd byte - ensuring predictable and deterministic memory updates in the AT24C32N-10SI-1.8.
How does the Write Protect (WP) pin function on the AT24C32N-10SI-1.8?
On the AT24C32N-10SI-1.8, the WP pin provides hardware-level write protection for the upper quadrant (8K bits) of memory. When WP is tied to VCC, writes to addresses 0x2000–0x3FFF are inhibited; when WP is grounded or left floating (internally pulled down), full memory access is enabled. This feature protects critical calibration or security data from accidental overwrite during firmware updates or power faults.
What package type is used for the AT24C32N-10SI-1.8?
The AT24C32N-10SI-1.8 uses an 8-pin JEDEC SOIC (8S1) package: 0.150" wide body, gull-wing leads, 1.27 mm pitch, and RoHS-compliant construction. This surface-mount package offers superior thermal and mechanical reliability over PDIP variants and is compatible with standard automated assembly processes used for the AT24C32N-10SI-1.8.
Is the AT24C32N-10SI-1.8 qualified for automotive applications?
The AT24C32N-10SI-1.8 is specified for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. While it shares the same die as automotive-grade variants (e.g., AT24C32D-SSHM-T), the AT24C32N-10SI-1.8 itself is intended for industrial and commercial use. For automotive body control or infotainment systems, Microchip recommends selecting explicitly qualified versions rather than relying on the AT24C32N-10SI-1.8.
AT24C32N-10SI-1.8 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C32N-10SI-1.8 FAQ
1.How can I place an order for AT24C32N-10SI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C32N-10SI-1.8 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-1.8 reliable?
The price and inventory of AT24C32N-10SI-1.8 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-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C32N-10SI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C32N-10SI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C32N-10SI-1.8?
AT24C32N-10SI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C32N-10SI-1.8 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-1.8?
For technical support, including AT24C32N-10SI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C32N-10SI-1.8 requirements.
6.How does Aetrix verify that AT24C32N-10SI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C32N-10SI-1.8 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-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C32N-10SI-1.8?
All AT24C32N-10SI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C32N-10SI-1.8, 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-1.8 part is unused and in its original packaging.
Return procedure for AT24C32N-10SI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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