The two input signals with date & time at IN1 and IN2 are compared with each other.
The bit locations 0 to 3 are set in the status byte according to the result. Bits 4 to 7 are not changed.
Bit 0 = 1 IN1 = IN2
Bit 1 = 1 IN1 != IN2
Bit 2 = 1 IN1 > IN2
Bit 3 = 1 IN1 < IN2