tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 210
tmp89fm42
Manufacturer Part Number
tmp89fm42
Description
8 Bit Microcontroller
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP89FM42.pdf
(408 pages)
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14. 8-bit Timer Counter (TC0)
RA002
PWM1 pin output
(TFF1=“1”)
PWM1 pin output
(TFF1=“0”)
INTT00 interrupt
request
INTT01 interrupt
request
Cycle
PWM1 pin output
(TFF1=“1”)
PWM1 pin output
(TFF1=“0”)
INTT00 interrupt
request
INTT01 interrupt
request
Cycle
14.4.7.2 Operations
clock. When a match between the lower 8 bits of the up counter value and the value set to PWMDUTY is
detected, the output of the
from the "L" to "H" level. When T01MOD<TFF1> is "1", the
level.
inserted in specific cycles of the duty pulse. In other words, the
of PWMDUTY+1. When T00MOD<TFF0> is "0", the period of the "L" level becomes longer than the
value set to PWMDUTY by 1 source clock. When T00MOD<TFF0> is "1", the period of the "H" level
becomes longer than the value set to PWMDUTY by 1 source clock. This function allows 16 cycles of
output pulses to be handled with a resolution nearly equivalent to 12 bits.
flow occurs and the up counter is cleared to "0x00". At the same time, the output of the
reversed. When T01MOD<TFF1> is "0", the
T01MOD<TFF1> is "1", the
Timer start
Timer start
Setting T001CR<T01RUN> to "1" allows the up counter to increment based on the selected source
If any of PWMAD3 to 0 is "1", an additional pulse that corresponds to 1 count of the source clock is
No additional pulse is inserted when PWMAD3 to 0 are all "0".
Subsequently, the up counter continues counting up. When the up counter value reaches 256, an over-
1
1
Figure 14-13 Examples of Inserting Additional Pulses
2
2
Additional
3
pulse
3
4
4
Additional
PWM1
When PWMAD0 = “1” and PWMAD2 = “1”
pulse
5
5
PWM1
6
6
pin is reversed. When T01MOD<TFF1> is "0", the
When PWMAD1=“1”
pin changes from the "L" to "H" level. At this time, an INTT00 inter-
Additional
pulse
7
7
Page 196
8
8
Additional
PWM1
9
pulse
9
10
10
pin changes from the "H" to "L" level. When
Additional
11
11
pulse
PWM1
12
12
PWM1
Additional
13
13
pulse
pin output is reversed at the timing
pin changes from the "H" to "L"
14
14
Additional
15
15
pulse
16
16
PWM1
TMP89FM42
Timer stop
Timer stop
17
17
PWM1
pin changes
pin is
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