Real Time Clock Phantom Clock/Parallel 512KByte 34-Pin PowerCap Module
512KB Parallel RTC IC, 120ns Access Time, 0°C to 70°C, Surface Mount
Timer or RTC, Non-Volatile, CMOS,
Clock IC Real-Time 512KB Surface Mount 3.3V 85°C
120ns 120GHz Parallel Interface Clock IC, 512KB, -40°C to 85°C, Surface Mount
Real Time Clock IC 3.3V 0°C/70°C
Real Time Clock 4096K NV SRAM w/Phantom Clock