m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 212
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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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The operation of pulse output port 0 is described below and is also applied to the operation of pulse output port 1.
Note: Refer to section “6.10 External interrupts.”
9.5 Pulse output port mode operation
Table 9.5.1 Setting of INT
9.5.1 Pulse output trigger
(1) RTP0
(2) RTP1
The pulse output trigger can be selected from an internal trigger and an external trigger.
When the pulse output trigger select bits (bits 7, 6 at address A8
selected; when these bits = “01
The pulse output trigger is an internal trigger.
A trigger occurs at an underflow of timer A3. This trigger occurrences can be confirmed by using the
timer A3 interrupt request bit.
Valid edge input to pin RTP
A trigger occurs at an underflow of timer A0. This trigger occurrence can be confirmed by using
the timer A0 interrupt request bit.
A trigger occurs at a valid edge input to pin RTP
rmed by using the INT
edges.
When using pin P5
register’s bit, corresponding to port P5
Note: This is set by the pulse output trigger select bits (bits 7, 6 at address A8
Internal trigger
External trigger
0
0
to RTP0
to RTP1
Falling and Rising
Falling
Rising
3
3
in pulse mode 0; RTP0
in pulse mode 0; RTP1
3
3
/RTP
according to valid edges
3
TRG0
interrupt request bit. Table 9.5.1 lists the setting of INT
TRG0
as an input pin for an external trigger, be sure to clear the port P5 direction
2
,” “10
7905 Group User’s Manual Rev.1.0
2
3
,” or “11
pin, in order to set the port P5
Falling (edge sense)
Rising (edge sense)
Falling and Rising (edge sense): used alternately
0
2
, RTP1
to RTP0
PULSE OUTPUT PORT MODE
2
,” an external trigger is selected.
3
in pulse mode 1
9.5 Pulse output port mode operation
TRG0
3
, RTP1
(Note). This trigger occurrence can be confi-
Setting of INT
0
, RTP1
3
16
1
pin to the input mode.
) = “00
in pulse mode 1
3
(Note)
2
,” an internal trigger is
3
according to valid
16
).
9-31
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