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Microchip Technology AT24C32W-10SC-1.8
- Part No.:
- AT24C32W-10SC-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT24C32W-10SC-1.8.pdf
- Description:
- IC EEPROM 32KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,470
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Product details
Overview
AT24C32W-10SC-1.8 from Microchip Technology (formerly Atmel) is a 32K-bit (4096 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage embedded systems. It operates across 1.8V to 5.5V, delivers 100 kHz I²C speed at 1.8V, supports 32-byte page writes, and features hardware write protection via the WP pin. It is used in battery-powered IoT sensors for nonvolatile parameter storage.
For engineers reviewing the AT24C32W-10SC-1.8 datasheet, AT24C32W-10SC-1.8 pinout, AT24C32W-10SC-1.8 application, or AT24C32W-10SC-1.8 equivalent, key selection criteria include 1.8V minimum supply, industrial temperature range (−40°C to +85°C), TSSOP-8 package compatibility, and hardware write-protect functionality for firmware configuration data integrity.
Technical Context
The AT24C32W-10SC-1.8 implements a standard two-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs. Its internal address counter enables current-address and sequential reads, while device addressing uses A0–A2 pins to support up to eight devices on one bus.
It uses an open-drain bidirectional SDA line compatible with wire-OR topology, and its WP pin provides hardware-level inhibition of writes to the upper quadrant (8K bits) when pulled high. The device enters standby mode after STOP condition receipt, drawing only 0.1 µA at 1.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 32,768 bits (4096 × 8), sufficient for storing calibration tables or device identity in compact edge nodes |
| Supply Voltage Range | 1.8V to 5.5V - enables direct interfacing with 1.8V logic without level shifters |
| I²C Clock Frequency | 100 kHz at 1.8V - ensures reliable timing margin in low-power microcontroller systems |
| Write Cycle Time | Max 10 ms - defines minimum delay between write commands; impacts firmware update latency |
| Standby Current | 0.1 µA at 1.8V - critical for multi-year battery life in always-on sensor nodes |
| Endurance | 1 million write cycles - supports frequent logging or configuration updates over product lifetime |
| Data Retention | 100 years - guarantees long-term reliability of stored calibration or security keys |
Pinout & Package
AT24C32W-10SC-1.8 is housed in an 8-pin TSSOP package (JEDEC MO-153, 0.170" body width), optimized for space-constrained PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired or left floating to configure one of eight possible I²C addresses; floating defaults to logic low |
| SDA | Serial Data I/O | Bidirectional open-drain line - requires external pull-up; shares bus with other I²C peripherals |
| SCL | Serial Clock Input | Master-generated clock; rising edge latches input, falling edge drives output |
| WP | Write Protect Control | Pulled high to VCC to lock upper 8K bits; tied low or unconnected for full write access |
| GND / VCC | Power Reference / Supply | Supports 1.8V–5.5V operation; decoupling capacitor required within 10 mm of VCC pin |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V Operation Support | Guaranteed functionality down to 1.8V supply - eliminates need for voltage translators in modern low-power SoC designs |
| Hardware Write Protection | WP pin disables writes to upper memory quadrant - prevents accidental corruption of critical boot parameters |
| Noise-Suppressed Inputs | Schmitt-trigger + filtering on SDA/SCL - improves immunity to EMI in motor-driven or industrial environments |
| 32-Byte Page Write Mode | Enables burst programming of configuration blocks - reduces I²C transaction overhead vs. byte-by-byte writes |
| Industrial Temperature Range | −40°C to +85°C operation - validated for deployment in automotive ECUs and outdoor metering equipment |
Applications
| Smart Energy Metering | Medical Wearable Sensors |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration coefficients, and tamper-event logs in utility-grade electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration and event storage IC with guaranteed 100-year data retention and 1M write endurance. Use Value: Enables regulatory compliance for 10+ year field deployment without memory degradation or recalibration drift. |
Use Scenario: Retaining patient-specific sensor calibration offsets and firmware version metadata in Bluetooth-enabled pulse oximeters. IC Role / Device Role / Timing Role: Low-voltage (1.8V) serial EEPROM interfaced directly to ARM Cortex-M0+ MCU's I²C peripheral. Use Value: Achieves sub-1µA system standby current by leveraging 0.1µA ISB at 1.8V, extending coin-cell battery life beyond 24 months. |
| Automotive Body Control Modules | Industrial PLC I/O Modules |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and diagnostic trouble code (DTC) history in 12V vehicle subsystems. IC Role / Device Role / Timing Role: Industrial-grade EEPROM with −40°C to +85°C operation and ESD >3,000V HBM. Use Value: Survives automotive load-dump transients and thermal cycling without data loss or reprogramming. |
Use Scenario: Holding module identification, channel scaling factors, and firmware update flags in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Cascadable I²C EEPROM supporting up to 8 devices per bus for distributed I/O configuration storage. Use Value: Reduces BOM count and simplifies firmware by enabling shared I²C bus across multiple plug-in modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip AT24C32D-SSHM-T | Same 32K-bit capacity and 1.8V–5.5V range, but in 8-lead SOIC (JEDEC MS-012) instead of TSSOP; 0.150" body width vs. 0.170" | SOIC footprint requires PCB redesign; better thermal dissipation but larger board area | Select when legacy SOIC layout reuse is prioritized over space savings |
| ON Semiconductor CAT24C32HU4I-GT3 | Pin-compatible TSSOP-8, 1.8V–5.5V, 100 kHz @ 1.8V, but rated for −40°C to +125°C and offers 2.5 µA ISB at 1.8V (vs. 0.1 µA) | Higher standby current limits battery life; extended temp rating suits under-hood automotive use | Select when ambient operating temperature exceeds +85°C and lower ISB is not critical |
Compared with AT24C32W-10SC-1.8, the AT24C32D-SSHM-T trades package compactness for SOIC manufacturability, while the CAT24C32HU4I-GT3 extends temperature capability at the cost of 25× higher standby current - making AT24C32W-10SC-1.8 optimal for space- and power-constrained industrial edge nodes.
Availability
AT24C32W-10SC-1.8 is available at Aetrix Electronics and suitable for smart metering, medical wearables, automotive body control, and industrial PLC I/O modules requiring stable component supply across extended product lifecycles.
Supply support for AT24C32W-10SC-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 nonvolatile memory solutions for industrial, automotive, and consumer markets.
The AT24C32W-10SC-1.8 belongs to Microchip's AT24Cxx serial EEPROM family, designed specifically for low-voltage, low-power embedded systems requiring robust, long-life nonvolatile storage in space-constrained applications.
FAQ
What is the maximum I²C clock frequency supported by the AT24C32W-10SC-1.8 at 1.8V?
The AT24C32W-10SC-1.8 supports a maximum I²C clock frequency of 100 kHz when operated at 1.8V. This is specified in the AC Characteristics table under "1.8-volt" column for parameter fSCL. Higher frequencies (e.g., 400 kHz) require VCC ≥ 2.5V and are not guaranteed at 1.8V operation.
Does the AT24C32W-10SC-1.8 support partial page writes?
Yes, the AT24C32W-10SC-1.8 supports partial page writes within its 32-byte pages. The device accepts 1 to 32 bytes per page write operation, with automatic internal address incrementing. If more than 32 bytes are sent, the address rolls over to the start of the same page, overwriting prior data.
How does the WP pin function on the AT24C32W-10SC-1.8?
On the AT24C32W-10SC-1.8, the WP (Write Protect) pin disables writes to the upper quadrant (8K bits) when pulled high to VCC. When tied to GND or left unconnected (internally pulled down), full memory write access is enabled. This provides hardware-level protection for critical configuration data.
What is the endurance and data retention specification for the AT24C32W-10SC-1.8?
The AT24C32W-10SC-1.8 is rated for 1 million write cycles and 100 years of data retention at 25°C. These values are guaranteed across its full operating temperature range (−40°C to +85°C), with retention time decreasing logarithmically at elevated temperatures per JEDEC standards.
Which packages are available for the AT24C32W-10SC-1.8?
The AT24C32W-10SC-1.8 is specifically offered in the 8-pin TSSOP package (package code "8T"). The "SC" in the part number denotes SOIC/TSSOP packaging, and the "W" suffix indicates industrial temperature grade (−40°C to +85°C). Other variants like PDIP or 14-pin SOIC exist for the AT24C32 family but not for this exact ordering code.
AT24C32W-10SC-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C32W-10SC-1.8 FAQ
1.How can I place an order for AT24C32W-10SC-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C32W-10SC-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 AT24C32W-10SC-1.8 reliable?
The price and inventory of AT24C32W-10SC-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 AT24C32W-10SC-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C32W-10SC-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C32W-10SC-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C32W-10SC-1.8?
AT24C32W-10SC-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C32W-10SC-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 AT24C32W-10SC-1.8?
For technical support, including AT24C32W-10SC-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C32W-10SC-1.8 requirements.
6.How does Aetrix verify that AT24C32W-10SC-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C32W-10SC-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 AT24C32W-10SC-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C32W-10SC-1.8?
All AT24C32W-10SC-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C32W-10SC-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 AT24C32W-10SC-1.8 part is unused and in its original packaging.
Return procedure for AT24C32W-10SC-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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