Minute Compare Register (Micr) - Fujitsu F2MC-8FX Hardware Manual

CHAPTER 27 REAL TIME CLOCK
27.3.3

Minute Compare Register (MICR)

The Minute Compare Register is used to perform comparison between minute and
minute counter.
Minute Compare Register (MICR)
MICR (Minute compare register)
Address
0FF2
R0/WX : Read 0 and write has no effect on operation
R/W : Readable and writable
-
X
The value of this register is used to compare with the minute counter for detecting alarm condition. In order
to have proper operation, minute compare value must be adequately set between 00H (0 minute) and 3BH
(59 minute) inclusive.
If set CRTCRL:PS to "1", The read value of MICR is indeterminate.
496
Figure 27.3-4 Minute Compare Register (MICR)
Bit 7 Bit 6 Bit 5
- -
MIC5
H
R0/WX R0/WX R/W
: Unused
: Indeterminate
Bit 4 Bit 3 Bit 2 Bit 1
MIC4 MIC3 MIC2 MIC1
R/W R/W R/W R/W
Bit 0 Initial value
MIC0 00XXXXXX
B
R/W