m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 204

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

Fig. 9.3.5 Structure of timer A5 and A8 mode registers (pulse output port 1)
9.3.4 Timers A5 to A9
Timers A5 and A8 are used as control registers; each generates a pulse output trigger. When using timers
A5 and A8, be sure to use them in the timer mode. (Refer to section “7.3 Timer mode.”)
When performing the pulse width modulation, be sure to use timers A6, A7, A9 in the pulse width modulation
mode. (Refer to section “7.6 Pulse width modulation (PWM) mode.”) Note that, from pin P2
PWM pulse by timer A9 is output. When it is unnecessary to output a PWM pulse, be sure to clear bit 2
of the timer A9 mode register (address DA
I/O port pin.
Figure 9.3.5 shows the structure of the timer A5 and A8 mode registers (pulse output port 1); Figure 9.3.6
shows the structures of the timer A6, A7, A9 mode registers (pulse output port 1 with pulse width modulation
used).
Timer A5 mode register (Address D6
Timer A8 mode register (Address D9
Bit
0
1
2
3
4
5
6
7
Fix these bits to “000000
Count source select bits
Bit name
2
” in the pulse output port mode.
7905 Group User’s Manual Rev.1.0
16
16
)
)
See Table 7.2.3.
16
) to “0.” At this time, pin P2
9.3 Block description of pulse output port 1
PULSE OUTPUT PORT MODE
Functions
2
can be used as a programmable
b7 b6 b5 b4 b3 b2 b1 b0
0 0
At reset
0
0
0
0
0
0
0
0
0
0
R/W
RW
RW
RW
RW
RW
RW
RW
RW
0
2
/TA9
0
OUT
9-23
, a