ADUC848BCP8-5 datasheet(71/108 Pages) AD

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ADuC845/ADuC847/ADuC848

Rev. A | Page 71 of 108

TIMECON—TIC Control Register

SFR Address:

A1H

Power-On Default:

00H

Bit Addressable:

Table 45. TIMECON SFR Bit Designations

Bit No.

Name

Description

----

Not Implemented. Write Don’t Care.

TFH

Twenty-Four Hour Select Bit.

Set by the user to enable the hour counter to count from 0 to 23.

Cleared by the user to enable the hour counter to count from 0 to 255.

5, 4

ITS1, ITS0

Interval Timebase Selection Bits.

ITS1

ITS0

Interval Timebase

1/128 Second

Seconds

Minutes

Hours

ST1

Single Time Interval Bit.

Set by the user to generate a single interval timeout. If set, a timeout clears the TIEN bit.

Cleared by the user to allow the interval counter to be automatically reloaded and start counting again at each

interval timeout.

TII

TIC Interrupt Bit.

Set when the 8-bit interval counter matches the value in the INTVAL SFR.

Cleared by user software.

TIEN

Time Interval Enable Bit.

Set by the user to enable the 8-bit time interval counter.

Cleared by the user to disable the interval counter.

TCEN

Time Clock Enable Bit.

Set by the user to enable the time clock to the time interval counters.

Cleared by the user to disable the clock to the time interval counters and reset the time interval SFRs to the last

value written to them by the user. The time registers (HTHSEC, SEC, MIN, and HOUR) can be written while TCEN is

low.

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