DS1305N,IC RTC SERIAL ALARM IND 16-DIP
DS1305N+,IC RTC SERIAL ALARM 16-DIP
DS1306,IC RTC SERIAL ALARM 16-DIP
DS1306+,IC RTC SERIAL ALARM 16-DIP
DS1306E,IC RTC SERIAL ALARM 20-TSSOP
DS1306E/T&R,IC RTC CLK/CALENDAR SPI 20TSSOP
DS1306E/T&R,实时时钟
DS1306E+,IC RTC SERIAL ALARM 20-TSSOP
