Specification Brand : CHUANGYEIC BulletPoint : RTC DS1302 Real Time Clock Module Development Board CR2032 AVR ARM PIC SMD For Arduino Compatible with MEGA 2560 3.3V 5V BulletPoint1 : Part NO.:PCA9538DBR BulletPoint2 : Number of I /O 8 BulletPoint3 : Frequency - Clock 400kHz BulletPoint4 : Voltage - Supply 2.3 V ~ 5.5 V ConnectivityTechnology : I2C CurrentRating : 16 amps ItemName : CHUANGYEIC 5PCS PCA9557RGYR IC XPNDR 400KHZ I2C SMBUS 16VQFN ItemTypeKeyword : clock-integrated-circuits Manufacturer : CHUANGYEIC Material : copper PartNumber : PCA9557RGYR ProductDescription : Interface I?C SMBus Number of I /O 8 Interrupt Output No Frequency - Clock 400kHz Voltage - Supply 2.3 V 5.5 V Operating Temperature -40C 85C Mounting Type Surface Mount Supplier Device Package 16-VQFN ProductSiteLaunchDate : 2024-06-11T01:54:48.039Z UnspscCode : 32101600 Voltage : 5.5 volts