m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 143

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

TIMER A
Fig. 7.6.2 Structures of timer Ai mode register in PWM mode
7-40
7.6 Pulse width modulation (PWM) mode
Timer Ai mode register (i = 0 to 4) (Addresses 56
Timer Ai mode register (i = 5 to 9) (Addresses D6
Bit
0
1
2
3
4
5
6
7
Operating mode select bits
Fix this bit to “1” in PWM mode.
Trigger select bits
16/8-bit PWM mode select bit
Count source select bits
Bit name
7905 Group User’s Manual Rev.1.0
b1 b0
b4 b3
See Table 7.2.3.
1 1 : PWM mode
0 0 :
0 1 :
1 0 : Falling edge of TAi
1 1 : Rising edge of TAi
0 : 16-bit pulse width modulator
1 : 8-bit pulse width modulator
Writing “1” to count start bit
(TAi
port pin.)
16
16
IN
to 5A
to DA
pin functions as a programmable I/O
16
16
)
)
Function
IN
IN
pin’s input signal
pin’s input signal
b7 b6 b5 b4 b3 b2 b1 b0
At reset
0
0
0
0
0
0
0
0
1
RW
RW
RW
RW
RW
RW
RW
RW
R/W
1 1