Descriptions Of Respective Registers; Timer Mode Register B (Tmb) - Renesas Hitachi H8S/2194 Series Hardware Manual

13.2

Descriptions of Respective Registers

13.2.1

Timer Mode Register B (TMB)

Bit :
TMB17
Initial value :
R/W :
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 5
TMBIF TMBIE
0 0 0
R/(W) *
R/W
4 3 2
— — TMB12
1 1 0
R/W
— —
Rev. 2.0, 11/00, page 297 of 1037
1 0
TMB11 TMB10
0 0
R/W R/W
(Initial value)
(Initial value)