MEC1404 Datasheet, PDF (317/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

TABLE 21-10: SPISR ENCODING
SPISR Value
Sub-Second Interrupt Rate, Hz
2
4
3
8
4
16
5
32
6
64
7
128
8
256
9
512
10
1024
11
2048
12
4096
13
8192
14
16384
15
32768
21.10.6 SUB-WEEK CONTROL REGISTER
MEC140X/1X
Interrupt Period
250 ms
125 ms
62.5 ms
31.25 ms
15.63 ms
7.813 ms
3.906 ms
1.953 ms
977 µS
488 µS
244 µS
122 µS
61 µS
30.5 µS
OFFSET ^14h
BITS
DESCRIPTION
TYPE
DEFAULT
RESET
EVENT
31:10 Reserved
R
SUBWEEK_TICK
R/W
9:7
This field selects the clock source for the Sub-Week Counter. See
Table 21-7, "Sub-Week Alarm Counter Clock" for the description of
the options for this field. See also Note 1.
AUTO_RELOAD
R/W
6 1= No reload occurs when the Sub-Week Counter expires
0= Reloads the SUBWEEK_COUNTER_LOAD field into the Sub-
Week Counter when the counter expires.
SYSPWR_PRES_ENABLE
R/W
Enables SYSPWR_PRES Pin to disable Week the Week timer and
Sub-Week Timer Power-Up Events from driving VCI_OUT high
-
-
0
VBAT_
POR
0
VBAT_
POR
0
VBAT_
POR
5 1=The SYSPWR_PRES Pin input low disables both the Week timer
and Sub-Week Timer Power-Up Events from driving VCI_OUT
high
0=The SYSPWR_PRES Pin input has no effect on the Week timer
and Sub-Week Timer Power-Up Events driving VCI_OUT high
4
SYSPWR_PRES_STATUS
Current status of the SYSPWR_PRES pin.
R
53:2 Reserved
R
-
VBAT_
POR
-
-
 2015 - 2016 Microchip Technology Inc.
DS00001956D-page 317