參數	數值
規格書	數據手冊下載
Package	20SSOP
Time Format	HH:MM:SS:hh
Date Format	DW:DM:M:Y
Function	Clock/Calendar/Alarm/Timer/Interrupt
Operating Supply Voltage	3|3.3 V
Bus Type	Serial (2-Wire, I2C)
User RAM	160 byte
Operating Temperature	-40 to 85 °C
Category	Real Time Clock
Manufacturer	STMicroelectronics