STMicroelectronics M24C02-WMN6P

Overview

M24C02-WMN6P from STMicroelectronics is a 2-Kbit serial EEPROM with an I²C-compatible two-wire interface. The memory is organized as 256 × 8 bits and is designed for nonvolatile parameter storage, board identification, calibration data, configuration bytes, and small system data blocks in 2.5 V to 5.5 V embedded designs.

For engineers reviewing the M24C02-WMN6P datasheet, M24C02-WMN6P pinout, M24C02-WMN6P application, or M24C02-WMN6P equivalent, this EEPROM is most relevant for MCU-based configuration storage, product ID memory, display EDID-style data, industrial module settings, consumer electronics parameters, and service calibration records requiring SO8 assembly, byte / page write operation, hardware write control, and standard I²C bus access.

Technical Context

M24C02-WMN6P provides 2 Kbits of electrically erasable nonvolatile memory accessed through SDA and SCL. The device supports byte write, page write, random read, current-address read, and sequential read operations, allowing a host microcontroller to store and retrieve small persistent data fields without adding parallel address or data buses.

The W voltage-range version operates from 2.5 V to 5.5 V, making it suitable for 3.3 V and 5 V logic systems. E0, E1, and E2 device-address pins allow multiple EEPROMs to share the same I²C bus address space, while the WC pin provides hardware write-control protection for applications that must prevent accidental EEPROM updates after programming.

Key Specifications

Pinout & Package

M24C02-WMN6P is supplied in an SO8 package. The 8-pin small-outline format gives engineers a compact but easily inspectable EEPROM footprint with separate address pins, I²C clock and data pins, write-control input, supply, and ground, making it practical for legacy 5 V boards, 3.3 V MCU systems, service-programmable modules, and production-programmed configuration memory.

Key Features

• 2-Kbit serial EEPROM organized as 256 × 8 bits for compact nonvolatile data storage.
• I²C-compatible two-wire interface using SDA and SCL for simple MCU connection.
• 2.5 V to 5.5 V operating supply range for 3.3 V and 5 V embedded systems.
• Byte write, 16-byte page write, random read, current-address read, and sequential read operation.
• E0, E1, and E2 hardware address pins for multi-device I²C bus configurations.
• WC hardware write-control input for protecting stored configuration or calibration data.
• SO8 package suitable for standard surface-mount assembly and visual inspection.
• Useful for product identification, board configuration, calibration constants, and small persistent data blocks.

Applications

Equivalent & Alternatives

When evaluating M24C02-WMN6P equivalent devices, engineers should compare EEPROM density, voltage range, package footprint, address-pin behavior, write-control polarity, page size, I²C timing, endurance and retention requirements, temperature range, packing format, and whether the design needs a lower-voltage EEPROM option or the same SO8 footprint.

Compared with M24C02-WMN6TP, M24C02-WMN6P keeps the same memory density, voltage option, SO8 package, pinout, and I²C EEPROM function, with the main selection difference being handling format. M24C02-WMN6P vs M24C02-RMN6P selection depends on minimum supply voltage, while comparison with M24C04-WMN6P depends on required EEPROM capacity and firmware address mapping.

Quality

M24C02-WMN6P should be sourced as original STMicroelectronics components through traceable and controlled supply channels. Quality verification procedures may include SO8 package inspection, top-mark validation, label review, solderability testing, lead coplanarity inspection, VCC / VSS continuity checks, I²C acknowledge testing, byte write verification, page write verification, readback comparison, WC write-protection testing, and incoming inspection according to embedded memory production requirements.

Availability

M24C02-WMN6P is available at Aetrix Electronics and suitable for MCU configuration storage, board identification memory, production calibration data, service settings, display modules, industrial controllers, and consumer electronics products requiring stable component supply and repeatable production support.

Supply support may include scheduled delivery planning, volume procurement support, BOM continuity assistance, traceable sourcing management, and long-term availability support for embedded product manufacturers, industrial equipment builders, repair groups, contract manufacturers, consumer electronics developers, and legacy EEPROM-board owners.

For production deployment, confirming the SO8 footprint, 2-Kbit capacity, 2.5 V to 5.5 V supply range, I²C bus pull-up voltage, E0 / E1 / E2 address setting, WC protection requirement, programming flow, operating temperature requirement, and sourcing continuity helps reduce procurement risk and improve manufacturing stability.

Manufacturer

STMicroelectronics supplies serial EEPROMs, microcontrollers, power-management ICs, sensors, analog devices, RF products, protection components, and discrete semiconductors for industrial, consumer, automotive, communication, and embedded applications. M24C02-WMN6P belongs to ST's M24C serial EEPROM portfolio for I²C-compatible nonvolatile data storage in compact embedded systems.

FAQ

What is M24C02-WMN6P used for?

M24C02-WMN6P is used to store small nonvolatile data blocks such as configuration bytes, board identification data, calibration constants, service settings, display information, and production-programmed parameters. It connects to a host controller through an I²C-compatible serial interface and retains data after power is removed.

How much memory does M24C02-WMN6P provide?

M24C02-WMN6P provides 2 Kbits of EEPROM memory organized as 256 bytes. This density is suitable for compact records and configuration data rather than large logs or firmware images. Firmware should use the correct byte addressing and page-write handling for the 256-byte memory array.

What interface does M24C02-WMN6P use?

M24C02-WMN6P uses an I²C-compatible two-wire serial interface with SDA and SCL pins. SDA is a bidirectional open-drain data line and SCL is the serial clock input from the host controller. Pull-up resistors are required on the I²C bus according to the selected supply voltage, bus capacitance, and speed.

What supply voltage does M24C02-WMN6P require?

M24C02-WMN6P is the W voltage-range option and operates from 2.5 V to 5.5 V. This makes it suitable for many 3.3 V and 5 V embedded systems. Designs requiring operation below 2.5 V should compare lower-voltage M24C02 family variants before changing the EEPROM.

What do the E0, E1, and E2 pins do on M24C02-WMN6P?

The E0, E1, and E2 pins on M24C02-WMN6P are hardware address inputs. They allow the EEPROM address to be set by tying the pins high or low, which is useful when more than one compatible EEPROM must share the same I²C bus with a single host controller.

How does the WC pin work on M24C02-WMN6P?

The WC pin on M24C02-WMN6P provides hardware write-control protection. When configured in the write-protect state, memory write operations are inhibited while read operations remain available. This is useful after factory programming, calibration, or final configuration because it reduces the risk of accidental EEPROM data changes.

What package is used by M24C02-WMN6P?

M24C02-WMN6P uses an SO8 package. The package provides eight pins for E0, E1, E2, VSS, SDA, SCL, WC, and VCC. The SO8 format is widely used for serial EEPROMs because it is compact, easy to route, and easier to inspect than many smaller leadless packages.

What are common M24C02-WMN6P alternatives?

Common comparison options include M24C02-WMN6TP for the same device in tape-and-reel logistics, M24C02-RMN6P when a lower minimum supply voltage is required, and M24C04-WMN6P when a similar I²C EEPROM family is needed with 4-Kbit capacity instead of 2-Kbit capacity.