It has 14 bytes of registers and 114 bytes of battery-backed static RAM. Century register doesn't exist on this particular model. The chip also provides time-of-day alarm, three maskable interrupts with a common interrupt output, and a programmable square wave output.
It has hardcoded daylight saving adjustment, 24-hour and 12-hour format modes, binary and BCD format modes.
== Ports ==
<pre>
Number Content Values
#00 actual second 00-59 (bcd or binary)#01 alarm second 00-59 (bcd or binary)#02 actual minute 00-59 (bcd or binary)#03 alarm minute 00-59 (bcd or binary)#04 actual hour 00-23 (bcd or binary)#05 alarm hour 00-23 (bcd or binary)#06 day of the week ??01-07#07 day of the month 01-31 (bcd or binary)#08 month 01-12 (bcd or binary)#09 year 00-99 (bcd or binary)
#0A status A see below
#0B status B see below
== Software ==
The RTC of the SYMBiFACE II is supported by [[FutureOS]] and , [[SymbOS]], [[HDCPM]].
== See also ==