M32C80 Datasheet, PDF (165/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/80 Group
14. Timer (Timer A)
When the reload register is set to "000316" and an external trigger (on rising edge
of a signal applied to the TAiIN pin) is selected
1 / fj X (2¹⁶ – 1)
Count source
Signal applied
“H”
to TAiIN pin
“L”
PWM pulse output ^{“H”}
from TAiOUT pin
“L”
“1”
IR bit in TAiIC register
“0”
No trigger occurs by this signal
1 / fi X n
fj : Count source frequency
(f1, f8, f2n(1), fC32)
n=000016 to FFFE16
Set to "0" by an interrupt request acknowledgement or by program
i=0 to 4
NOTE:
1. The CNT3 to CNT0 bits in the TCSPR register select no division (n=0) or divide-by-2n (n=1 to 15).
Figure 14.14 16-bit Pulse Width Modulator Operation
When 8 high-order bits of the reload register are set to "0216", 8 low-order bits of
the reload register are set to "0216" and an external trigger (on falling edge of a
signal applied to the TAiIN pin) is selected
Count source⁽¹⁾
1 / fj X (m + 1) X (2⁸ – 1)
Signal applied to
“H”
TAiIN pin
“L”
Underflow signal of ^{“H”}
8-bit prescaler⁽²⁾
“L”
PWM pulse output ^{“H”}
from TAiOUT pin
“L”
“1”
IR bit in TAiIC register
“0”
1 / fj X (m + 1)
1 / fj X (m + 1) X n
fj : Count source frequency
(f1, f8, f2n(3), fC32)
m=0016 to FF16, n=0016 to FE16
Set to "0" by an interrupt request
acknowledgement or by program
i=0 to 4
NOTES:
1. 8-bit prescaler counts a count source.
2. 8-bit pulse width modulator counts underflow signals of the 8-bit prescaler.
3. The CNT3 to CNT0 bits in the TCSPR register select no division (n=0) or divide-by-2n (n=1 to 15).
Figure 14.15 8-bit Pulse Width Modulator Operation
Rev. 1.00 Nov. 01, 2005 Page 146 of 330
REJ09B0271-0100