m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 213
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m37905
Manufacturer Part Number
m37905
Description
Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.M37905.pdf
(565 pages)
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PULSE OUTPUT PORT MODE
9.5 Pulse output port mode operation
Fig. 9.5.1 Example of pulse output port mode operation (1)
9-32
9.5.2 Operation at internal trigger
Figures 9.5.1 to 9.5.3 show examples of pulse output port mode operations.
three-phase output data register 0
corresponding pulse output pins at each underflow of timer Ai. While the pulse width modulation is
selected, the pulse width modulation is performed for “H” level output.
The timer reloads the contents of the reload register and continues counting.
bit retains “1” until the interrupt request is accepted or it is cleared to “0” by software.
(or after the confirmation of a timer Ai interrupt request occurrence.)
The contents of the pulse output data bits of three-phase output data registers 0, 1 are output from the
Write the next output data into three-phase output data registers 0, 1 during a timer Ai interrupt routine
When the timer Ai (i = 0, 3) count start bit is set to “1,” the counter starts counting of a count source.
The timer Ai interrupt request bit is set to “1” when the counter underflows in
Contents of bits 3 to 0 of
Timer A0 interrupt
RTP0
RTP0
RTP0
RTP0
request bit
0
1
2
3
FFFF
output
output
output
output
0000
16
16
n
n : Reloaded value
The above applies when the following conditions are satisfied:
• Pulse mode 0 selected
• RTP0
• No pulse width modulation
• Positive polarity
Starts counting
1
1 : Written by software
2 : When avoiding undefined output in these terms (in other words, when stabilizing
3 : Cleared to “0” by an interrupt request acceptance or cleared by software.
Undefined
Undefined
Undefined
Undefined
0
these output level), be sure to follow the procedure “Processing of avoiding undefined
output before starting pulse output” in Figure 9.4.2.
to RTP0
7905 Group User’s Manual Rev.1.0
1
0011
3
2
2
2
2
selected
Starts pulse outputting
2
3
1
0110
2
3
1
1100
2
3
1
. The interrupt request
1001
2
3
1
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