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M32C/8A датащи(PDF) 182 Page - Renesas Technology Corp

номер детали M32C/8A
подробное описание детали  RENESAS MCU M16C FAMILY / M32C/80 Series
PDF  372 Pages
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производитель  RENESAS [Renesas Technology Corp]
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M32C/8A датащи(HTML) 182 Page - Renesas Technology Corp

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M32C/8A Group
15. Timers (Timer A)
Rev.1.00
Jul 15, 2007
Page 165 of 352
REJ09B0385-0100
Figure 15.20
8-bit Pulse Width Modulator Operation (Timer A)
TAiS bit in the
TABSR register
IR bit in the
TAiIC register
PWM pulse output
from TAiOUT pin
i = 0 to 4
fj: Count source frequency (f1, f8, f2n(1), fC32)
n: high-order bits in the TAi register (00h to FEh)
m: low-order bits in the TAi register (00h to FFh)
(Conditions) High-order bits in the TAi register are set to 02h.
Low-order bits in the TAi register are set to 02h.
TAiMR register: The MR1 bit is set to 0 (falling edge of signal applied to the TAiIN pin.)
Signal applied
to TAiIN pin
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
becomes 1 (interrupt requested).
Underflow signal of
8-bit prescaler
Count starts
End of 1 cycle
Count stops
Count source
“H”
“L”
1
0
“H”
“L”
1
0
1 / fj x (m+1) x (28-1)
Set to 1 by program
Set to 0 by program
1 / fj x (m+1) x n
Set to 0 by an interrupt request acknowledgement or by program
NOTES:
1. Bits CNT3 to CNT0 in the TCSPR register select no division (n = 0) or divide-by-2n (n = 1 to 15).
2. The 8-bit pulse width modulator counts underflow signals of the 8-bit prescaler.



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