MEC1322 datasheet(238/456 Pages) MICROCHIP

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MEC1322

DS00001719D-page 238

 2014 - 2015 Microchip Technology Inc.

19.11.12 REGISTER B

1.953125 ms

3.90625 ms

7.8125 ms

15.625 ms

31.25 ms

62.5 ms

125 ms

250 ms

500 ms

Offset

0Bh

Bits

Description

Type

Default

Reset

Event

7 UPDATE_CYCLE_INHIBIT

In its default state ‘0’, this bit allows hardware updates to the Time

and Date registers, which occur at 1-second intervals. A ‘1’ written to

this field inhibits updates, allowing these registers to be cleanly writ-

ten to different values. Writing ‘0’ to this bit allows updates to con-

tinue.

R/W

RTC_R

6 PERIODIC_INTERRUPT_ENABLE

1=Alows the Periodic Interrupt events to be propagated as interrupts

0=Periodic events are not propagates as interrupts

R/W

RTC_R

5 ALARM_INTERRUPT_ENABLE

1=Alows the Alarm Interrupt events to be propagated as interrupts

0=Alarm events are not propagates as interrupts

R/W

RTC_R

4 UPDATE_ENDED_INTERRUPT_ENABLE

1=Alows the Update Ended Interrupt events to be propagated as inter-

rupts

0=Update Ended events are not propagates as interrupts

R/W

RTC_R

3Reserved

2DATA_MODE

1=Binary Mode for Dates and Times

0=BCD Mode for Dates and Times

R/W

RTC_R

1 HOUR_FORMAT_24_12

1=24-Hour Format for Hours and Hours Alarm registers. 24-Hour for-

mat keeps the AM/PM bit off, with value range 0--23

0=12-Hour Format for Hours and Hours Alarm registers. 12-Hour for-

mat has an AM/PM bit, and value range 1--12

R/W

RTC_R

TABLE 19-8:

RS (hex)

Interrupt Period

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