APPENDIX D LIST OF CAUTIONS
User’s Manual U17446EJ3V1UD
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Chapter
Cl
assi
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Function Details
of
Function
Cautions Page
pp.
TMC00: 16-bit
timer mode control
register 00
The capture operation is performed at the fall of the count clock. An interrupt
request input (INTTM0n0), however, occurs at the rise of the next count clock.
91, 122
pp.
The timer operation must be stopped before setting CRC00.
92, 120
pp.
Soft
When the clear & start mode entered on a match between TM00 and CR000 is
selected by 16-bit timer mode control register 00 (TMC00), CR000 should not
be specified as a capture register.
92, 119
pp.
Hard
CRC00: Capture
/compare control
register 00
To ensure the reliability of the capture operation, the capture trigger requires a
pulse longer than two cycles of the count clock selected by prescaler mode
register 00 (PRM00) (refer to Figure 6-17).
92, 122
pp.
The timer operation must be stopped before setting other than OSPT00.
93, 120
pp.
If LVS00 and LVR00 are read, 0 is read.
93, 120
pp.
OSPT00 is automatically cleared after data is set, so 0 is read.
93, 120
pp.
Soft
Do not set OSPT00 to 1 other than in one-shot pulse output mode.
93, 120
pp.
Hard
A write interval of two cycles or more of the count clock selected by prescaler
mode register 00 (PRM00) is required, when OSPT00 is set to 1 successively. 93, 120
TOC00: 16-bit
timer output
control register
00
When TOE00 is 0, set TOE00, LVS00, and LVR00 at the same time with the
8-bit memory manipulation instruction. When TOE00 is 1, LVS00 and LVR00
can be set with the 1-bit memory manipulation instruction.
p.93
pp.
Always set data to PRM00 after stopping the timer operation.
95, 120
pp.
Soft
If the valid edge of the TI000 pin is to be set as the count clock, do not set the
clear/start mode and the capture trigger at the valid edge of the TI000 pin.
95, 122
pp.
Chapter 6
Hard
16-bit
timer/event
counter 00
PRM00:
Prescaler mode
register 00
In the following cases, note with caution that the valid edge of the TI0n0 pin is
detected.
<1> Immediately after a system reset, if a high level is input to the TI0n0 pin,
the operation of the 16-bit timer counter 00 (TM00) is enabled
→
If the rising edge or both rising and falling edges are specified as the
valid edge of the TI0n0 pin, a rising edge is detected immediately after
the TM00 operation is enabled.
<2> If the TM00 operation is stopped while the TI0n0 pin is high level, TM00
operation is then enabled after a low level is input to the TI0n0 pin
→
If the falling edge or both rising and falling edges are specified as the
valid edge of the TI0n0 pin, a falling edge is detected immediately after
the TM00 operation is enabled.
<3> If the TM00 operation is stopped while the TI0n0 pin is low level, TM00
operation is then enabled after a high level is input to the TI0n0 pin
→
If the rising edge or both rising and falling edges are specified as the
valid edge of the TI0n0 pin, a rising edge is detected immediately after
the TM00 operation is enabled.
95, 124
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