onsemi CAT24C32WI-G

Mfr. Part

CAT24C32WI-G

Manufacturer

AMI Semiconductor / onsemi. Y-IC is a quality distributor for onsemi and we are committed to providing the best products and services to every customer

Detailed Description

32 Kbit serial EEPROM organized as 4K x 8, I2C interface up to 1 MHz, wide supply 1.7 V to 5.5 V, industrial temperature range -40°C to 85°C, RoHS3 compliant. Housed in an 8-SOIC package and supplied in tube. Supports page write, hardware write protect, and hardware address pins A0, A1, A2. Typical write cycle 5 ms, read access about 400 ns. Base product family CAT24C32

Key Features

32 Kbit non-volatile EEPROM, 4K x 8 organization

I2C two-wire serial interface, up to 1 MHz clock

1.7 V to 5.5 V supply range for flexible system power

Industrial temperature rating -40°C to 85°C

Hardware write protect (WP) pin for data integrity

Hardware address pins A0, A1, A2 for up to 8 device addresses on the same bus

Page write support to speed up multi-byte programming

Low power standby when idle

Standard 8-SOIC footprint for easy layout and drop-in replacement

RoHS3 compliant and lead-free

Key Advantages

Simple, robust non-volatile storage for calibration, configuration, IDs, and logs

Works across common logic levels and battery rails thanks to wide VCC

Fast I2C bus up to 1 MHz reduces firmware wait time

Easy multi-device I2C expansion using A0–A2 address pins

Hardware write protect helps prevent accidental writes in the field

Mature, widely second-sourced category for long-term availability

Compact 8-pin package and surface-mount assembly lower BOM and save space

Packaging

Shipment type: Tube

Device package: 8-SOIC, body width 0.154 in, 3.90 mm nominal

Mounting: Surface mount, pin pitch 1.27 mm, 8 leads

Materials: Molded epoxy encapsulation, copper leadframe, lead-free matte tin finish, RoHS3 compliant

Size and footprint: JEDEC-compliant 8-SOIC outline, compact body for dense PCBs

Pin functions: VCC, GND, SCL, SDA, WP, A0, A1, A2

Thermal characteristics: Industrial operating range -40°C to 85°C, low power dissipation, no heatsink required in typical use

Electrical properties summary: Supply 1.7 V to 5.5 V, I2C up to 1 MHz, EEPROM 32 Kbit organized as 4K x 8, typical write cycle 5 ms, read access about 400 ns

Lifecycle

Current status: To the best of our knowledge, this part is active in production and not near discontinuation

Equivalent or alternative models

- Same family and brand

- onsemi CAT24C32 series in other packages and options such as TSSOP-8 or PDIP-8. Verify exact suffix for package and temperature range

- Cross-brand functional alternatives

- Microchip 24LC32, 24AA32, 24FC32 series

- STMicroelectronics M24C32-W, M24C32-R series

- ROHM BR24G32 series

- ABLIC S-24C32 series

- Always verify pinout, timing, voltage range, page size, and write-protect behavior in the datasheet before substitution

If you need drop-in guidance or long-term supply planning, please contact the Y-IC sales team via our website for the latest EOL and PCN updates

Key Application Areas

Configuration and calibration constants in consumer and industrial devices

Serial numbers, MAC addresses, and asset tags

User settings and preference storage for embedded products

Data logs, metering snapshots, and event records

Firmware parameters and safe default storage

IoT nodes, sensors, gateways, and communication modules

Instrumentation, test equipment, and factory automation controls

Medical and healthcare electronics requiring reliable non-volatile memory

Datasheet

Y-IC hosts the most authoritative datasheet for this product on our website. We recommend downloading the datasheet on this page for full specifications, timing diagrams, page write details, endurance, and retention data

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