Rev. 2.0, 11/00, page 335 of 1037
Bit 5: Selection if Using the TMRU-2 for Reloading or Not Doing So (RLD)
This bit is used for selecting if the TMRU-2 reload function is to be turned on or not.
Bit 5
RLD
Description
0
Not using the TMRU-2 as the reload timer
(Initial value)
1
Using the TMRU-2 as the reload timer
Bit 4: Selection of the Reloading Timing for the TMRU-2 (RLCK)
This bit works to select if the TMRU-2 is reloading by the CFG or by underflowing of the
TMRU-2 counter. This choice is valid only when the bit 5 (RLD) is being set to 1.
Bit 4
RLCK
Description
0
Reloading at the rising edge of the CFG
(Initial value)
1
Reloading by underflowing of the TMRU-2
Bits 3 and 2: Selecting the Clock Source for the TMRU-2 (PS21 and PS20)
These bits work to select the inputting clock to the TMRU-2.
Bit 3
Bit 2
PS21
PS20
Description
0
Counting by underflowing of the TMRU-1
(Initial value)
0
1
Counting by the PSS,
φ
/256
0
Counting by the PSS,
φ
/128
1
1
Counting by the PSS,
φ
/64
Bit 1: Selection of the Operation Mode of the TMRU-1 (RLD/CAP)
This bit works to select if the operation mode of the TMRU-1 is reload timer mode or capture
timer mode.
Under the capture timer mode, reloading operation will not be made. Also, the counter reading
will be cleared as soon as capture has been made.
Bit 1
RLD/CAP
Description
0
The TMRU-1 works as the reloading timer
(Initial value)
1
The TMRU-1 works as the capture timer
Содержание Hitachi H8S/2191
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