APPENDIX D LIST OF CAUTIONS
User’s Manual U16899EJ2V0UD
523
(9/24)
Chapter
Cl
assi
fi
cati
on
Function Details
of
Function
Cautions Page
In the mode in which clear & start occurs on a match of TM5n and CR5n
(TMC5n6 = 0), do not write other values to CR5n during operation.
p. 183
Soft
CR5n: 8-bit
timer compare
register 5n
In PWM mode, make the CR5n rewrite interval 3 count clocks of the count clock
(clock selected by TCL5n) or more.
p. 183
Hard
When the Ring-OSC clock is selected as the clock to be supplied to the CPU, the
clock of the Ring-OSC oscillator is divided and supplied as the count clock. If the
count clock is the Ring-OSC clock, the operation of 8-bit timer/event counter 50 is
not guaranteed.
p. 184
When rewriting TCL50 to other data, stop the timer operation beforehand.
p. 184
TCL50: Timer
clock selection
register 50
Be sure to clear bits 3 to 7 to 0.
p. 184
When the Ring-OSC clock is selected as the clock to be supplied to the CPU, the
clock of the Ring-OSC oscillator is divided and supplied as the count clock. If the
count clock is the Ring-OSC clock, the operation of 8-bit timer/event counter 51 is
not guaranteed.
p. 185
When rewriting TCL51 to other data, stop the timer operation beforehand.
p. 185
TCL51: Timer
clock selection
register 51
Be sure to clear bits 3 to 7 to 0.
p. 185
The settings of LVS5n and LVR5n are valid in other than PWM mode.
p. 187
Perform <1> to <4> below in the following order, not at the same time.
<1> Set TMC5n1, TMC5n6: Operation mode setting
<2> Set TOE5n to enable output: Timer output enable
<3> Set LVS5n, LVR5n (see Caution 1): Timer F/F setting
<4> Set TCE5n
p. 187
TMC5n: 8-bit
timer mode
control register
5n
Stop operation before rewriting TMC5n6.
p. 187
Interval
timer/square
waveform
output
Do not write other values to CR5n during operation.
pp. 189,
192
In PWM mode, make the CR5n rewrite interval 3 count clocks of the count clock
(clock selected by TCL5n) or more.
p. 193
Soft
PWM output
When reading from CR5n between <1> and <2> in Figure 7-15, the value read
differs from the actual value (read value: M, actual value of CR5n: N).
p. 196
Chapter 7
Hard
8-bit
timer/
event
counters
50, 51
(TM50,
TM51)
Timer start error An error of up to one clock may occur in the time required for a match signal to be
generated after timer start. This is because 8-bit timer counters 50 and 51 (TM50,
TM51) are started asynchronously to the count clock.
p. 197
CMP0n: 8-bit
timer H
compare
register 0n
CMP0n cannot be rewritten during timer count operation.
p. 201
Soft
CMP1n: 8-bit
timer H
compare
register 1n
In the PWM output mode and carrier generator mode, be sure to set CMP1n
when starting the timer count operation (TMHEn = 1) after the timer count
operation was stopped (TMHEn = 0) (be sure to set again even if setting the same
value to CMP1n).
p. 201
Chapter 8
Hard
8-bit
timers H0,
H1
(TMH0,
TMH1)
TMHMD0: 8-bit
timer H mode
register 0
When the Ring-OSC clock is selected as the clock to be supplied to the CPU, the
clock of the Ring-OSC oscillator is divided and supplied as the count clock. If the
count clock is the Ring-OSC clock, the operation of 8-bit timer H0 is not
guaranteed.
p. 204