DS12C887A,IC RTC W/RAM 128 BYTE 24-EDIP
DS12C887A+,IC RTC W/RAM 128 BYTE 24-EDIP
DS12CR887-33,实时时钟
DS12CR887-33+,IC RTC W/RAM 128 BYTE 24-EDIP
DS12CR887-5,实时时钟
DS12CR887-5+,IC RTC W/RAM 128 BYTE 24-EDIP
DS12R885S-33+,IC RTC W/RAM 128 BYTE 24-SOIC
DS12R885S-33+T&R,IC RTC CLK/CALENDAR PAR 24SOIC