M30620FCAFP datasheet(88/274 Pages) MITSUBISHI

88 / 274 page

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Timer A

1 / fi X (2

– 1)

Count source

TAiIN pin

input signal

PWM pulse output

from TAiOUT pin

Condition : Reload register = 000316, when external trigger

(rising edge of TAiIN pin input signal) is selected

Trigger is not generated by this signal

“H”

“L”

Timer Ai interrupt

request bit

“1”

“0”

Cleared to “0” when interrupt request is accepted, or cleared by software

fi : Frequency of count source

(f1, f8, f32, fC32)

Note: n = 000016 to FFFE16.

1 / fi X n

Count source (Note1)

TAiIN pin input signal

Underflow signal of

8-bit prescaler (Note2)

PWM pulse output

from TAiOUT pin

“H”

“L”

“1”

“0”

Timer Ai interrupt

request bit

Cleared to “0” when interrupt request is accepted, or cleaerd by software

fi : Frequency of count source

(f1, f8, f32, fC32)

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 = 0016 to FF16; n = 0016 to FE16.

Condition : Reload register high-order 8 bits = 0216

Reload register low-order 8 bits = 0216

External trigger (falling edge of TAiIN pin input signal) is selected

1 / fi X (m + 1) X (2 – 1)

1 / fi X (m + 1) X n

1 / fi X (m + 1)

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

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