24FC512-I/ST

24FC512-I/ST is STMicroelectronics’ 512-kbit I2C serial EEPROM for non-volatile data storage in microcontroller systems.
Key points:
- Density and organization: 512 kbit (64 kB) memory, 8-bit wide
- Interface: I2C two-wire, supports standard (100 kHz) and fast (400 kHz) modes
- Addressing: 16-bit memory addressing; hardware address pins (A0–A2) on bus; WP pin for write protection
- Features: page write capability, random/sequential reads, block protection options
- Endurance/retention: typically up to 1,000,000 write cycles; long data retention
- Power/temperature: suitable for wide supply ranges (check datasheet); Industrial temperature variant (-40 to 85°C) for -I
- Package: 8-pin (SO-8/DIP-8/USOP) variants
For exact electrical specs, pinout, page size, and timing, consult the official datasheet.

Equivalent 512 Kbit I2C EEPROMs to 24FC512-I/ST:
- ST M24C512 (M24C512-W/I)
- Microchip 24FC512 (also 24AA512/24LC512/AT24C512)
- Atmel AT24C512 (now Microchip)
- ON Semiconductor CAT24C512
- Fudan Micro FM24C512
These share same capacity and I2C interface.

24FC512-I/ST features:
- 512 kbit (64 kB) serial I2C EEPROM.
- I2C two-wire interface; compatible with standard and Fast-mode (up to ~1 MHz).
- Two-byte memory addressing (full 0–64K range).
- 128-byte page write; typical tWR ≈ 5 ms.
- Random and sequential read capability; address pointer auto-increments.
- WP pin for hardware write protection (full array or selective blocks).
- Endurance: ~1,000,000 write cycles; Data retention ≥100 years (at 25°C).
- Operating voltage: 1.8–5.5 V.
- Temp range: -40°C to +125°C (industrial).
- Package: 8-pin options (e.g., SO8/SOIC), RoHS-compliant.

- Pin count: 8 pins.
- Function: STMicroelectronics 24FC512-I/ST is a 512-kbit I2C serial EEPROM (non-volatile) with SCL/SDA for I2C access; capacity 64 kB; uses A0–A2 to set device address and WP for write protection; VCC and GND provided.

- Manufacturer: STMicroelectronics (ST).
- What kind of company: STMicroelectronics is a global (multinational) semiconductor company that designs, manufactures, and sells integrated circuits and discrete semiconductors for automotive, industrial, consumer, and communications applications.

24FC512-I/ST is a 512-kbit I2C serial EEPROM. Common application areas include:
- Non-volatile memory for microcontrollers: configuration data, calibration constants, IDs, firmware version
- Data logging and event counters in industrial equipment and consumer electronics
- Asset tracking and identification: serial/lot numbers, device IDs, MAC addresses
- Settings and user preferences storage in consumer electronics and appliances
- Parameter storage for automotive and industrial control systems
These use-cases leverage its compact, low-power, page-structured memory for reliable non-volatile storage.

The 24FC512-I/ST is provided in an 8-pin SOIC (SO-8) package (Plastic Small-Outline).