Rev. 1.0, 02/00, page 255 of 1141
12.2
Register Descriptions
12.2.1
Timer Mode Register B (TMB)
0
0
1
0
R/W
2
0
R/W
3
1
4
—
—
—
—
1
5
0
6
0
7
R/W
R/W
TMBIE
R/(W)*
TMBIF
0
R/W
TMB17
TMB12
TMB11
TMB10
Note:
*
Only 0 can be written to clear the flag.
Bit :
Initial value :
R/W :
The TMB is an 8-bit read/write register which works to control the interrupts, to select the auto
reloading function and to select the input clock.
When reset, the TMB is initialized to H'18.
Bit 7
Selecting the Auto Reloading Function (TMB17): This bit works to select the auto
reloading function of the Timer B.
Bit 7
TMB17
Description
0
Selects the interval function
(Initial value)
1
Selects the auto reloading function
Bit 6
Interrupt Requesting Flag for the Timer B (TMBIF): This is an interrupt requesting
flag for the Timer B. It indicates the fact that the TCB is overflowing.
Bit 6
TMBIF
Description
0
[Clearing conditions]
(Initial value)
When 0 is written after reading 1
1
[Setting conditions]
When the TCB overflows