Hitachi H8S/2199 Hardware Manual page 269

12.2 Register Descriptions
12.2.1 Timer Mode Register B (TMB)
Bit :
TMB17
Initial value :
R/W :
Note: * Only 0 can be written to clear the flag.
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
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]
When 0 is written after reading 1
1 [Setting conditions]
When the TCB overflows
7 6
TMBIF TMBIE
0 0
R/W R/(W)* R/W
5 4 3
—
—
0 1 1
— —
2 1
TMB12 TMB11
0 0
R/W R/W
Rev. 1.0, 02/00, page 255 of 1141
0
TMB10
0
R/W
(Initial value)
(Initial value)