M32CSLASH8B datasheet(181/406 Pages) RENESAS

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Under development

M32C/8B Group

15. Timer A

Preliminary specification

Specifications in this manual are tentative and subject to change.

REJ09B0450-0050 Rev.0.50 Oct 31, 2008

Page 164 of 385

Figure 15.19

16-Bit Pulse Width Modulator Operation (Timer A)

Count source

Input to the TAiIN pin

Set to 0 by an interrupt request acknowledgement or by a program

IR bit in the

TAiIC register

1 / fj

× (216 - 1)

PWM pulse output

from the TAiOUT pin

No trigger is generated

by this signal

1 / fj

× m

i = 0 to 4

fj: Count source frequency (f1, f8, f2n(1), fC32)

m: Setting value of the TAi register (0000h to FFFEh)

(Conditions) TAi register is set to 0005h.

TAiMR register: MR1 bit is set to 1 (rising edge of signal applied to the TAiIN pin)

NOTE:

1. Bits CNT3 to CNT0 in the TCSPR register select no division (n = 0) or divide-by-2n (n = 1 to 15).

When the TAiS bit is set to 0 (count stops) while the

TAiOUT output is "H", the TAiOUT output becomes

"L" and the IR bit is set to 1 (interrupt requested).

TAiS bit in the TABSR

Set to 1 by a program

Set to 0 by a program

Count starts

End of 1 cycle

Count stops

“H”

“L”

“H”

“L”

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