Specifications
Manufacturer: STMicroelectronics
Device Type: 512Kbit I2C serial EEPROM nonvolatile memory chip, tape and reel surface mount packaged
Core Electrical Parameters
Total storage capacity: 512Kbit, arranged as 64K × 8-bit bytes
Operating supply voltage range: 2.5V ~ 5.5V
Maximum I2C bus clock speed: 1MHz
Single byte or page programming time: maximum 5ms
Data access time: 900ns maximum
Endurance specification: 4 million erase-write cycles per memory cell
Data retention lifespan: 200 years at normal ambient temperature
Operating temperature range: -40°C ~ +85°C
Package specification: 8-pin narrow TSSOP surface mount housing
Moisture sensitivity level: MSL 1, no baking required before reflow soldering
Main Functional Features
Standard two-wire I2C communication interface, supporting 100kHz, 400kHz and 1MHz transmission rates
128-byte page write structure, enabling bulk data writing to improve programming efficiency
Built-in power-on reset circuit to avoid abnormal memory writing during power fluctuation
Hardware write protection pin locks the entire memory area to prevent accidental data erasure
Integrated ECC error correction logic to guarantee long-term stored data accuracy
Three address configurable pins allow up to eight identical chips to be mounted on one I2C bus simultaneously
Low static power consumption during standby state, suitable for battery-powered equipment
Compact small outline package saves PCB layout space
Halogen-free internal composition, fully compliant with RoHS environmental standards
Typical Application Scenarios
Industrial control equipment parameter storage
Automotive electronic modules configuration data recording
Smart instrument calibration and setting preservation
Consumer electronics user preference and log saving
Smart meter running parameter backup
Embedded system firmware configuration storage
