M24C32-WDW6TP

The M24C32-WDW6TP is STMicroelectronics’ 32‑Kbit I2C serial EEPROM. It provides non-volatile storage organized as 4K × 8 bits and is accessed over a two-wire I2C bus.
Key points:
- Memory: 32 Kbits (4K bytes); random and sequential read; 32-byte page write.
- Interface: I2C, supports standard (100 kHz) and fast mode (400 kHz).
- Addressing: uses hardware address pins (A0–A2) to stack up to eight devices on one bus; WP pin offers write protection.
- Performance: typical write cycle ~5 ms; endurance ~1×10^6 write cycles; data retention ~40 years.
- Voltage: wide-voltage operation, generally around 2.7–5.5 V.
- Package: 8-pin package (SO-8/SOIC), with the WDW6TP packaging code variant.
Uses: microcontroller data logging, configuration storage, calibration data, and other small non-volatile storage needs.

Equivalent 32Kbit I2C EEPROMs (two-wire):
- ST M24C32 (same family)
- Microchip 24LC32B / 24AA32 / 24FC32
- Atmel (Microchip) AT24C32C / AT24C32D
- NXP CAT24C32
- Fudan Microelectronics FM24C32A
Note: check voltage, package, and timing for exact replacement.

M24C32-WDW6TP features:
- 32 Kbit I2C EEPROM (4096 x 8)
- I2C two-wire serial interface; supports standard (100 kHz) and fast mode (400 kHz)
- Wide operating voltage: 1.65 V to 5.5 V (I/O compatible)
- 32-byte page write; random access with internal address pointer
- Typical write cycle ≈ 5 ms; read-after-write with ACK polling
- Endurance: ~1,000,000 write cycles; data retention >40 years
- Hardware write protection via WP pin; protection modes to prevent writes
- Device addressing via A0–A2 pins (up to 8 devices on one bus)
- Automatic address pointer increment for sequential reads/writes
- Operating temp range: −40°C to 85°C (industrial)
- 8-pin package; RoHS-compliant (options include suitable SMD packages)

- Pin count: 8 pins (8-pin package)
- Function: 32 Kbit I2C serial EEPROM (non-volatile memory), accessible via the I2C two-wire interface (SCL/SDA). Includes address pins A0–A2 and a WP (write-protect) pin; VCC and GND for power.

- Manufacturer: STMicroelectronics (ST)
- What kind of company: A global semiconductor and electronics company that designs and manufactures integrated circuits and discrete components (memory, microcontrollers, sensors, etc.), headquartered in Geneva, Switzerland.

M24C32-WDW6TP is a 32-kbit I2C EEPROM. Common application areas include:
- Automotive: calibration data, sensor configuration, parameter storage, fault/event logs
- Consumer electronics: user preferences, device settings, nonvolatile logs
- Industrial automation: configuration data, calibration constants, diagnostic/event logs
- Medical devices: device settings, calibration data
- Networking/telecom: config blocks, logs, status counters
- General embedded systems: persistent storage for lookup tables, small data logs, keys
Interface: I2C two-wire, suitable for any MCU-based system needing nonvolatile memory.

8-pin SOIC (SOP-8) package.