Datasheet

Data Sheet ADuC845/ADuC847/ADuC848
Rev. C | Page 71 of 108
TIMECON—TIC Control Register
SFR Address: A1H
Power-On Default: 00H
Bit Addressable: No
Table 45. TIMECON SFR Bit Designations
Bit No. Name Description
7
----
Not Implemented. Write Don’t Care.
6 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
0 0 1/128 Second
0 1 Seconds
1 0 Minutes
1 1 Hours
3 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.
2 TII TIC Interrupt Bit.
Set when the 8-bit interval counter matches the value in the INTVAL SFR.
Cleared by user software.
1
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.
0 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.