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Rev. 2.0, 11/00, page 341 of 1037
Bit 2: TMRI1 Interrupt Requesting Flag (TMRI1)
This is the TMRI1 interrupt requesting flag.
It indicates occurrences of the TMRU-1 underflow signals.
Bit 2
TMRI1
Description
0
[Clearing conditions]
(Initial value)
When 0 is written after reading 1.
1
[Setting conditions]
When the TMRU-1 underflows.
Bits 1 and 0: Reserved
When they are read, 1 will always be readout. Writes are disabled.
16.2.4
Timer R Capture Register 1 (TMRCP1)
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
R
TMRC17
R
TMRC16
R
TMRC15
R
TMRC14
R
TMRC13
R
TMRC12
R
TMRC11
R
TMRC10
Bit :
Initial value :
R/W :
The timer R capture register 1 (TMRCP1) works to store the capture data of the TMRU-1.
During the course of the capturing operation, the TMRU-1 counter readings are captured by the
TMRCP1 at the CFG edge or the IRQ3 edge. The capturing operation of the TMRU-1 is being
performed using 16 bits, in combination with the capturing operation of the TMRU-2.
The TMRCP1 is an 8-bit read only register. When reset, the TMRCS is initialized to H'FF.
Notes: 1. When the TMRCP1 is readout while the capture signal is being received, the reading
data become unstable. Pay attention to the timing for reading out.
2. When a shift to the low power consumption mode is made while the capturing
operating is in progress, the counter reading becomes unstable. After returning to the
active mode, always write "H'FF" into the TMRL1 to initialize the counter.
Содержание Hitachi H8S/2191
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