Serial I/O real time clock with Walk-up Output SERIAL I/O real time clock WITH WAKE UP OUTPUT SERIAL I/O real time clock WITH WAKE UP OUTPUT 串行I / O实时时钟唤醒增加产出
CMOS real time clock/Calendar(直接总线连接实时时钟/日历,备用电压低至2V) 的CMOS实时时钟/日历(直接总线连接实时时钟/日历,备用电压低2V的) From old datasheet system DIRECT BUS CONNECTED CMOS real time clock/CALENDAR