From old datasheet system 256k NV SRAM with Phantom clock 0 timeR(S), real time clock, DMA34 0 timeR(S), real time clock, DMA34 POWERCAP MODULE BOARD-34 256k NV SRAM with Phantom clock 0 timeR(S), real time clock, PDMA28
2-WireRTC real time clock/calendar/CPU Supervisor with EEPROM 1 timeR(S), real time clock, PDSO14 2-Wire??RTC real time clock/calendar/CPU Supervisor with EEPROM
0 timeR(S), real time clock, PDSO8 PLASTIC, SOIC-8 real time clock/calendar/Alarms/CPU Supervisor(实时时钟/日历/闹钟/CPU监控电路) 实时时钟/日历/报警/ CPU监控(实时时日历/闹钟/ CPU的监控电路)
real-time clock/calendar with Embedded Unique ID 0 timeR(S), real time clock, PDSO8 real-time clock/calendar with Embedded Unique ID; Temperature Range: -40°C to 85°C; Package: 8-SOIC T&R 0 timeR(S), real time clock, PDSO8