M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 130

• Manufacturer Part Number: M37702E6BFS
• Description: EPROM MCU/8BIT CMOS EMULATION CH
• Manufacturer: Renesas Electronics America

Specifications of M37702E6BFS

• Accessory Type: Emulator EPROM MCU
• For Use With/related Products: 7702
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Fig. 5.6.1 Structures of timer Ai mode registers and timer Ai registers in PWM mode
TIMER A
5.6 Pulse width modulation (PWM) mode
5–40
<When operating as a 16-bit pulse width modulator>
(b15)
<When operating as an 8-bit pulse width modulator>
(b15)
b7
b7
b7
b6
b5
b4
b3
b2
1
b1
1
(b8)
(b8)
b0 b7
b0
b0 b7
1
Timer Ai mode register (i = 0 to 4) (Addresses 56
Bit
0
1
2
3
4
5
6
7
Fix this bit to “1” in PWM mode.
Trigger select bits
Count source select bits
Operating mode select bits
16/8-bit PWM mode select bit
7702/7703 Group User’s Manual
Bit name
b0
b0
f
f
15 to 0 These bits can be set to “0000
i
15 to 8
i
: Frequency of count source (f
7 to 0
: Frequency of count source (f
Bit
Bit
Timer A1 register (Addresses 49
Timer A3 register (Addresses 4D
Timer A2 register (Addresses 4B
Timer A4 register (Addresses 4F
Timer A0 register (Addresses 47
Timer A0 register (Addresses 47
Timer A1 register (Addresses 49
Timer A2 register (Addresses 4B
Timer A3 register (Addresses 4D
Timer A4 register (Addresses 4F
Assuming that the set value = n, the “H” level
width of the PWM pulse output from the
TAi
PWM pulse’s period is expressed as follows:
These bits can be set to “00
Assuming that the set value = n, the “H” level
width of the PWM pulse output from the
TAi
These bits can be set to “00
Assuming that the set value = m, PWM
pulse’s period output from the TAi
expressed as follows:
n(m + 1)
n
16
OUT
OUT
f
i
f
– 1
i
0 : As a 16-bit pulse width modulator
1 : As an 8-bit pulse width modulator
b1 b0
1 1 : PWM mode
b4 b3
0 0 : Writing “1” to count start bit
0 1 : (TAi
1 0 : Falling edge of TAi
1 1 : Rising edge of TAi
b7 b6
0 0 : f
0 1 : f
1 0 : f
1 1 : f
pin is expressed as follows:
pin is expressed as follows:
2
16
64
512
grammable I/O port.)
16
Functions
Functions
IN
Functions
pin functions as a pro-
to 5A
2
2
, f
, f
(m + 1)(2
16
16
16
, f
, f
IN
IN
16
)
16
pin’s input signal
pin’s input signal
64
64
” to “FF
” to “FE
, or f
16
, or f
f
” to “FFFE
i
16
16
16
16
16
16
16
16
16
16
, 48
, 46
, 4E
OUT
8
, 4A
, 4C
, 46
, 48
, 4E
512
512
, 4A
, 4C
– 1)
n
f
)
)
16
16
i
pin is
16
16
16
16
16
.”
16
16
16
.”
16
16
)
)
)
)
)
)
)
)
)
)
16
.”
At reset
Undefined
Undefined
Undefined
At reset
At reset
0
0
0
0
0
0
0
0
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
WO
RW
WO
WO