Технические характеристики
Производитель: STMicroelectronics
Device Type: 512Kbit I2C serial non-volatile EEPROM, tape-and-reel surface mount packaged
Основные технические характеристики электрооборудования
Total storage capacity: 512Kbit, organized as 64K × 8-bit
Operating supply voltage: 1.6V ~ 5.5V
Supported I2C bus rates: 1MHz fast-mode plus, 400kHz fast mode, 100kHz standard mode
Page writing unit: 128 bytes per page
Byte and page programming duration: maximum 4ms, typical value 3.1ms
Random access time: 450ns maximum
Write cycle endurance per cell: over 4 million times
Data retention lifespan: more than 200 years under normal ambient temperature
Current consumption parameters
Standby mode typical current: 330nA
Read mode typical current: 100μA
Write mode typical current: 360μA
Wake-up delay: less than 5μs
Operating temperature range: -40℃ ~ +85℃
Package form: 8-pin narrow SOIC surface mount housing
Packaging format: continuous tape and reel for automated PCB assembly
Основные функциональные возможности
Standard two-wire I2C communication bus, easy to connect with mainstream microcontrollers
Equipped with an independent 128-byte identification page for storing confidential parameters, which can be permanently locked to read-only status
Built-in three dedicated control registers: read-only device type identifier register, configurable device address register, software write protection register
Supports both hardware whole-chip write protection and segmented software write protection to prevent accidental data erasure
Up to eight chips can be mounted on a single I2C bus via address configuration
Enhanced internal ESD and latch-up protection circuits to resist electrostatic interference
Ultra-low quiescent power consumption, perfectly adapted to battery-powered portable equipment
Fast sequential and random reading modes to improve data access efficiency
Compact small outline package saves printed circuit board layout space
Halogen-free packaging materials comply with global environmental specifications
Типичные сценарии применения
Industrial automation equipment parameter and calibration data storage
Smart instrumentation running configuration recording
Consumer electronic device user settings and log backup
Smart water, electricity and gas meter operating parameter preservation
Low-power wearable electronic equipment data storage
Embedded system firmware configuration and backup storage
