m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 210

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

Fig. 9.4.4 Initial setting example for registers relevant to pulse output port 0 (pulse mode 1) (4)
However, if n = “00
does not operate and pin TAj
level. At this time, no timer Aj interrupt request
occurs.
When pulse width modulation is performed
When operating as 8-bit pulse width modulator
Period =
“H” level width =
f
(b15)
(b15)
Setting of PWM pulse period and “H” level width
i
b7
b7
b7
: Frequency of count source
When 8-bit pulse width modulator
When 16-bit pulse width modulator
(m + 1)(2 – 1)
16
f
,” the pulse width modulator
0
i
8
n (m + 1)
0
f
i
OUT
1 1
pin outputs “L”
(b8)
(b8)
b0
b0
b0
Continued from preceding Figure 9.4.3.
16/8-bit PWM mode select bit
Count source select bit
j = 1, 2 : Fix this bit to “0.
j = 4 : When not using pin TA4
b7
b7
Timer Aj mode register (j = 1, 2, 4) (Addresses 57
0 : 16-bit pulse width modulator
1 : 8-bit pulse width modulator
See Table 7.2.3.
Continued on Figure 9.4.5.
P2
0
as a programmable I/O port pin), clear this bit to “0.”
A value in the range from “0000
7905 Group User’s Manual Rev.1.0
However, if n = “0000
does not operate and pin TAj
level. At this time, no timer Aj interrupt request
occurs.
A value in the range from “00
A value in the range from “00
When operating as 16-bit pulse width modulator
b0
b0
Period =
OUT
“H” level width =
fi : Frequency of count source
Timer A1 register (Addresses 49
Timer A2 register (Addresses 4B
Timer A4 register (Addresses 4F
Timer A1 register (Addresses 49
Timer A2 register (Addresses 4B
Timer A4 register (Addresses 4F
(in other words, when using pin
2 – 1
16
16
f
i
” to “FFFE
PULSE OUTPUT PORT MODE
When pulse width modulation is not performed
16
,” the pulse width modulator
n
f
i
OUT
16
16
16
” (n) is set.
16
” to “FF
” to “FE
pin outputs “L”
, 58
9.4 Setting of pulse output port mode
16
16
, 5A
16
” (m) is set.
” (n) is set.
16
16
16
16
16
16
16
, 48
, 48
, 4E
, 4E
, 4A
, 4A
)
16
16
16
16
16
16
)
)
)
)
)
)
Timer A6 register (Addresses C9
Timer A7 register (Addresses CB
Timer A9 register (Addresses CF
Timer A6 register (Addresses C9
Timer A7 register (Addresses CB
Timer A9 register (Addresses CF
(k = 6, 7, 9)
(Addresses D7
Registers used in pulse output port 1
Timer Ak mode register
16
, D8
16
, DA
16
)
16
16
16
16
16
16
, C8
, C8
, CE
, CA
, CE
, CA
9-29
16
16
16
16
16
16
)
)
)
)
)
)