MEC1322 Datasheet, PDF (239/456 Pages) Microchip Technology – Keyboard and Embedded Controller for Notebook PC

MEC1322
Offset ^0Bh
Bits
Description
0 DAYLIGHT_SAVINGS_ENABLE
Type
R/W
1=Enables automatic hardware updating of the hour, using the regis-
ters Daylight Savings Forward and Daylight Savings Backward to
select the yearly date and hour for each update
0=Automatic Daylight Savings updates disabled
Default
0b
Reset
Event
RTC_R
ST
Note:
The DATA_MODE and HOUR_FORMAT_24_12 bits affect only how values are presented as they are
being read and how they are interpreted as they are being written. They do not affect the internal contents
or interpretations of registers that have already been written, nor do they affect how those registers are
represented or counted internally. This mode bits may be set and cleared dynamically, for whatever I/O
data representation is desired by the host program.
19.11.13 REGISTER C
Offset ^0Ch
Bits
Description
7 INTERRUPT_REQUEST_FLAG
Type
RC
1=Any of bits[6:4] below is active after masking by their respective
Enable bits in Register B.
0=No bits in this register are active
This bit is automatically cleared by every Read access to this register.
6 PERIODIC_INTERRUPT_FLAG
RC
1=A Periodic Interrupt event has occurred since the last time this reg-
ister was read. This bit displays status regardless of the Periodic
Interrupt Enable bit in Register B
0=A Periodic Interrupt event has not occurred
This bit is automatically cleared by every Read access to this register.
5 ALARM_FLAG
RC
1=An Alarm event has occurred since the last time this register was
read. This bit displays status regardless of the Alarm Interrupt
Enable bit in Register B.
0=An Alarm event has not occurred
This bit is automatically cleared by every Read access to this register.
Default
0b
Reset
Event
RTC_R
ST
0b
RTC_R
ST
0b
RTC_R
ST
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DS00001719D-page 239