M30240ECFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30240ECFP Datasheet - Page 79

• Manufacturer Part Number: M30240ECFP
• Description: M30240 Group Specification
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
Timer A
Figure 1.68: Example of how a 16-bit pulse-width modulator operates
Figure 1.69: Example of how an 8-bit pulse-width modulator operates
Count source (Note1)
TA
Underflow signal of
8-bit prescaler (Note2)
PWM pulse output
from TA
Timer Ai interrupt
request bit
Condition : Reload register = 0003
Count source
TA
input signal
PWM pulse output
from TA
Timer Ai interrupt
request bit
iIN
iIN
pin input signal
pin
iOUT
Condition : Reload register high-order 8 bits = 02
iOUT
pin
f
i
pin
(rising edge of TA
: Frequency of count source
Note: n = 0000
f
(f
i
: Frequency of count source
1
(f
, f
1
8
, f
Reload register low-order 8 bits = 02
External trigger (falling edge of TA
, f
“H”
“L”
“H”
“L”
“H”
“L”
“1”
“0”
“H”
“L”
“H”
“L”
“1”
“0”
8
, 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
32
32
)
)
16
to FFFE
iIN
16
pin input signal) is selected
to FE
16
16
.
Cleared to “0” when interrupt request is accepted, or cleared by software
16
, when external trigger
1-79
; n = 00
Cleared to “0” when interrupt request is accepted, or cleared by software
Trigger is not generated by this signal
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
1 / f
1 / f
16
i
1 / f
1 / f
X (m + 1)
to FE
1 / f
i
X
i
i
X
i
(2
X (m + 1) X (2 – 1)
16
X (m + 1) X n
n
16
.
iIN
– 1)
16
pin input signal) is selected
16
8
Mitsubishi microcomputers
M30240 Group