DS12C887 Description
A century byte was added to memory location 50, 32h, as called out by the PC AT specification. A lithium energy source, quartz crystal, and write-protection circuitry are contained within a 24 pin dual in-line package. As such, the DS12C887 is a plete subsystem replacing 16 ponents in a typical application.
DS12C887 Key Features
- 15 bytes of clock and control registers
- 113 bytes of general purpose RAM Programmable square wave output signal Bus-patible interrupt signals (IRQ) Three interr
- Time-of-day alarm once/second to once/day
- Periodic rates from 122 ms to 500 ms
- End of clock update cycle Century register
- Multiplexed Address/Data Bus NC
- No Connect MOT
- Bus Type Selection CS
- RTC Chip Select Input AS
- Address Strobe