參數	數值
規格書	數據手冊下載
Package	28PCDIP
Time Format	HH:MM:SS
Date Format	DW:DM:M:Y
Function	Clock/Calendar/NV Timekeeping RAM/Battery Backup
Operating Supply Voltage	5 V
Bus Type	Parallel
User RAM	8192 byte
Operating Temperature	0 to 70 °C
Category	Real Time Clock
Manufacturer	STMicroelectronics