M30622SAFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30622SAFP Datasheet - Page 87

• Manufacturer Part Number: M30622SAFP
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Timer A
Figure 1.14.12. Example of how a 16-bit pulse width modulator operates
Figure 1.14.13. Example of how an 8-bit pulse width modulator operates
Condition : Reload register = 0003
Count source
TA
input signal
PWM pulse output
from TA
Timer Ai interrupt
request bit
TA
Underflow signal of
8-bit prescaler (Note2)
Count source (Note1)
PWM pulse output
from TA
Timer Ai interrupt
request bit
iIN
iIN
pin
pin input signal
iOUT
iOUT
Condition : Reload register high-order 8 bits = 02
f
i
pin
(rising edge of TA
: Frequency of count source
Note: n = 0000
pin
(f
1
, f
f
8
i
: Frequency of count source
, f
“H”
“H”
“L”
“L”
“1”
“0”
(f
32
1
, f
, f
Reload register low-order 8 bits = 02
External trigger (falling edge of TA
“H”
“H”
“H”
“L”
“L”
“L”
“1”
“0”
8
C32
, f
Note 1: The 8-bit prescaler counts the count source.
Note 2: The 8-bit pulse width modulator counts the 8-bit prescaler's underflow signal.
Note 3: m = 00
16
32
)
, f
to FFFE
C32
iIN
)
pin input signal) is selected
16
16
.
Cleared to “0” when interrupt request is accepted, or cleared by software
16
, when external trigger
to FE
Trigger is not generated by this signal
16
; n = 00
1 / f
Cleared to “0” when interrupt request is accepted, or cleaerd by software
1 / f
i
1 / f
i
X
X
(2
16
n
i
16
1 / f
X (m + 1)
to FE
1 / f
– 1)
i
i
X (m + 1) X (2 – 1)
16
X (m + 1) X n
.
iIN
16
pin input signal) is selected
16
8
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M16C / 62A Group
Mitsubishi microcomputers
87