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Microchip Technology AT24C32N-10SC-2.7
- Part No.:
- AT24C32N-10SC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C32N-10SC-2.7.pdf
- Description:
- IC EEPROM 32KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,726
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Product details
Overview
AT24C32N-10SC-2.7 from Microchip Technology (formerly Atmel) is a 32K-bit (4096 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates across 2.7V–5.5V, supports 100 kHz I²C bus speed, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention - used in industrial sensor calibration storage and power-meter firmware parameter backup.
For engineers reviewing the AT24C32N-10SC-2.7 datasheet, AT24C32N-10SC-2.7 pinout, AT24C32N-10SC-2.7 application, or AT24C32N-10SC-2.7 equivalent, key selection considerations include its 2.7V minimum operating voltage, 32-byte page write capability, Schmitt-triggered SDA/SCL inputs for noise immunity, and JEDEC SOIC-8 package compatibility with legacy board layouts.
Technical Context
The AT24C32N-10SC-2.7 implements a two-wire I²C interface with bidirectional open-drain SDA and edge-triggered SCL, supporting up to eight devices on one bus via A0–A2 address pins. Its internal architecture organizes memory as 256 pages of 32 bytes each, enabling partial-page writes without erasing full pages.
It uses a proprietary input bias circuit on A0–A2 to default floating pins to logic low, and integrates a low-VCC detector to prevent data corruption during brown-out conditions. Write protection is implemented at the hardware level: tying WP to VCC inhibits writes to the upper quadrant (8K bits), while grounding WP enables full-memory access.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 32,768 bits (4096 × 8), sufficient for storing configuration tables or device-specific calibration coefficients in space-constrained designs |
| Supply Voltage Range | 2.7V to 5.5V - supports direct integration into 3.3V systems without level-shifting, and maintains operation during 2.7V brown-out events |
| I²C Bus Speed | 100 kHz maximum - compatible with legacy microcontrollers lacking high-speed I²C support, reducing timing validation effort |
| Write Cycle Time | 10 ms max - enables predictable firmware update latency; no external polling delay required beyond tWR |
| Endurance & Retention | 1 million write cycles / 100 years data retention - meets long-life requirements for utility metering and industrial control log storage |
| Standby Current | 0.5 µA max at 2.7V - minimizes battery drain in always-on IoT endpoint nodes powered by coin cells |
| ESD Protection | >3,000V HBM - withstands handling and field-level ESD events without requiring external TVS diodes |
Pinout & Package
AT24C32N-10SC-2.7 is packaged in an 8-pin JEDEC SOIC (SOIC-8, package code 8S1), 0.150" wide body, RoHS-compliant plastic gull-wing outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardware-selectable I²C slave address bits; allow up to eight AT24C32N-10SC-2.7 devices on one bus; float to logic low if unconnected |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up; supports wire-OR with other I²C peripherals |
| SCL | Serial Clock Input | Positive-edge clock input for data-in; negative-edge sampling for data-out; Schmitt-triggered for noise rejection |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC blocks writes to upper 8K bits; grounded enables full-memory writes |
| GND | Ground Reference | Signal and power return path; must be low-impedance to ensure stable I²C signaling and EEPROM reliability |
| VCC | Power Supply | 2.7V–5.5V tolerant supply input; internal regulator ensures consistent core voltage across operating range |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation (2.7V–5.5V) | Enables direct use in 3.3V and mixed-voltage systems without level shifters or regulators |
| 32-byte page write mode | Reduces firmware overhead by allowing burst writes within a single page boundary, minimizing I²C transaction count |
| Schmitt-triggered SDA/SCL inputs | Rejects fast transients and slow-rising signals common in noisy industrial environments, eliminating need for external filtering |
| Hardware write protection (WP pin) | Prevents accidental overwrites of critical calibration or security data without software intervention or firmware changes |
| 100-year data retention | Guarantees nonvolatile storage integrity over product lifetime in applications like smart grid infrastructure and medical diagnostics |
Applications
| Smart Energy Metering | Industrial Sensor Calibration |
|---|---|
Use Scenario: Storing tariff schedules, pulse-count history, and metrology calibration constants in DIN-rail-mounted electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration and event-log storage; retains data across power cycles and firmware updates. Use Value: Meets IEC 62056 compliance for secure, tamper-resistant parameter storage with guaranteed 100-year retention under thermal stress. |
Use Scenario: Holding factory-trimmed offset/gain coefficients and temperature-compensation lookup tables for pressure/temperature sensors. IC Role / Device Role / Timing Role: Persistent parameter repository accessed during sensor initialization and runtime compensation routines. Use Value: Eliminates need for re-calibration after power loss; 1M write cycles support field recalibration during maintenance intervals. |
| POS Terminal Firmware Backup | Automotive Body Control Module |
Use Scenario: Safeguarding payment application keys, merchant ID mappings, and transaction journal fragments in retail point-of-sale terminals. IC Role / Device Role / Timing Role: Secure boot-time configuration loader and runtime audit trail buffer. Use Value: Hardware WP pin prevents malicious or erroneous overwrites of cryptographic keys; 2.7V operation ensures function during brown-out conditions. |
Use Scenario: Storing seat/mirror position presets, door lock configurations, and lighting profiles in automotive BCMs. IC Role / Device Role / Timing Role: User preference memory with AEC-Q100-relevant reliability (available in industrial temp grade). Use Value: Withstands automotive thermal cycling (-40°C to +85°C); 32-byte page writes enable fast profile saves without disrupting CAN bus activity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95320-WMN6TP | 32K SPI interface, 5V-only (4.5–5.5V), 20 MHz max clock, no WP pin | Requires SPI host controller; lacks hardware write protection; higher power consumption (ISB = 5 µA) | Select when existing design uses SPI and does not require low-voltage operation or hardware write lock. |
| 24LC32A-I/P | Same I²C interface, 2.5V–5.5V range, 100 kHz, PDIP-8 package, no -2.7 suffix variant | Broader voltage range but identical 100 kHz timing; available only in through-hole PDIP, not SOIC | Choose for prototyping or legacy through-hole boards where SOIC footprint is unavailable. |
Compared with M95320-WMN6TP and 24LC32A-I/P, AT24C32N-10SC-2.7 uniquely combines 2.7V operation, SOIC-8 packaging, hardware WP, and 100 kHz I²C compatibility - making it optimal for compact, low-power, production-ready 3.3V embedded systems requiring robust data integrity.
Availability
AT24C32N-10SC-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, smart energy metering, and automotive body control module designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AT24C32N-10SC-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 acquired Atmel in 2016 and continues to manufacture, qualify, and support the AT24C series EEPROMs under its broad memory portfolio.
The AT24C32N-10SC-2.7 belongs to Microchip's serial EEPROM product line, engineered for reliable, low-power nonvolatile storage in cost-sensitive, space-constrained embedded systems across industrial, automotive, and consumer applications.
FAQ
What is the operating voltage range of the AT24C32N-10SC-2.7?
The AT24C32N-10SC-2.7 operates from 2.7V to 5.5V DC. This 2.7V minimum enables direct interfacing with 3.3V microcontrollers and ensures functional operation during brown-out conditions down to 2.7V, as verified in the official Microchip datasheet revision 0336F.
Does the AT24C32N-10SC-2.7 support page writes, and what is the page size?
Yes, the AT24C32N-10SC-2.7 supports 32-byte page writes. Each of its 256 memory pages holds exactly 32 bytes, and partial-page writes are permitted - meaning firmware can write fewer than 32 bytes within a page boundary without affecting adjacent data in that page.
How does the Write Protect (WP) pin function on the AT24C32N-10SC-2.7?
When the WP pin of the AT24C32N-10SC-2.7 is tied to VCC, writes to the upper quadrant (8K bits, addresses 0x2000–0x3FFF) are inhibited; all other addresses remain writable. When WP is grounded, full-memory write access is enabled. If left unconnected, an internal pull-down defaults WP to active-low (write-enabled).
What package type is used for the AT24C32N-10SC-2.7?
The AT24C32N-10SC-2.7 uses an 8-pin JEDEC SOIC package (package code 8S1), 0.150" wide body, with gull-wing leads. This surface-mount outline matches industry-standard SOIC footprints and is distinct from PDIP, TSSOP, or 14-pin SOIC variants in the same family.
Is the AT24C32N-10SC-2.7 qualified for industrial temperature operation?
No - the AT24C32N-10SC-2.7 is specified for commercial temperature range (0°C to +70°C). For industrial operation (-40°C to +85°C), the correct variant is AT24C32N-10SI-2.7, which shares identical electrical specs but undergoes extended temperature screening and qualification per Microchip's industrial-grade standards.
AT24C32N-10SC-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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C32N-10SC-2.7 FAQ
1.How can I place an order for AT24C32N-10SC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C32N-10SC-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-10SC-2.7 reliable?
The price and inventory of AT24C32N-10SC-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-10SC-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C32N-10SC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C32N-10SC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C32N-10SC-2.7?
AT24C32N-10SC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C32N-10SC-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-10SC-2.7?
For technical support, including AT24C32N-10SC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C32N-10SC-2.7 requirements.
6.How does Aetrix verify that AT24C32N-10SC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C32N-10SC-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-10SC-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C32N-10SC-2.7?
All AT24C32N-10SC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C32N-10SC-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-10SC-2.7 part is unused and in its original packaging.
Return procedure for AT24C32N-10SC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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