M16CSLASH26 datasheet(93/239 Pages) RENESAS

93 / 239 page

Timer A

Renesas Technology Corp.

M16C/26 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Under

development

Preliminary Specifications Rev. 0.9

Specifications in this manual are tentative and subject to change.

Figure 1.12.14. Example of how a 16-bit pulse width modulator operates

Figure 1.12.15. Example of how an 8-bit pulse width modulator operates

(f1, f2, f8, f32, fC32)

1 / fi X (2

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

Timer Ai interrupt

request bit

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

fi : Frequency of count source

Note: n = 000016 to FFFE16.

1 / fi X n

(f1, f2, f8, f32, fC32)

Count source (Note1)

TAiIN pin input signal

Underflow signal of

8-bit prescaler (Note2)

PWM pulse output

from TAiOUT pin

Timer Ai interrupt

request bit

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

fi : Frequency of count source

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 / fi X (m + 1) X n

1 / fi X (m + 1)

M16C/26 数据表(PDF) 93 Page - Renesas Technology Corp

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