DS1390U-18+,IC RTC W/CHARGER 10-USOP
DS1390U-3,实时时钟 Low-V SPI/3-Wire With Trickle Charger
DS1390U-3+,IC RTC SPI/3WIRE LV 10-USOP
DS1390U-3+T&R,IC RTC CLK/CALENDAR SPI 10UMAX
DS1390U-3+T&R,IC RTC SPI 3WIRE W/CHRGR 10-MSOP
DS1390U-33,实时时钟
DS1390U-33+,IC RTC W/CHARGER 10-USOP
DS1390U-33+T&R,IC RTC CLK/CALENDAR SPI 10UMAX