M16C29 Datasheet, PDF (140/499 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/Tiny SERIES

M16C/29 Group
12. Timer A
1 / fi X (2 ¹⁶ – 1)
Count source
Input signal to
“H”
TAiIN pin
“L”
PWM pulse output ^{“H”}
from TAiOUT pin
“L”
IR bit in the
1
TAiIC register
0
Trigger is not generated by this signal
1 / fj X n
fj : Frequency of count source
(f1, f2, f8, f32, fC32)
i = 0 to 4
Set to 0 upon accepting an interrupt request or by program
NOTES:
1. n = 000016 to FFFE16.
2. This timing diagram is for the case where the TAi register is 0003 16, bits TAiTGH and TAiTGL in the ONSF or
TRGSR register is set to 00 2 (TAiIN pin input), the MR1 bit in the TAiMR register is set to 1 (rising edge), and
the MR2 bit in the TAiMR register is set to 1 (trigger selected by TAiTGH and TAiTGL bits).
Figure 12.13 Example of 16-bit Pulse Width Modulator Operation
Count source ⁽¹⁾
1 / fj X (m + 1) X (2 ⁸ – 1)
Input signal to
“H”
TAiIN pin
“L”
Underflow signal of ^{“H”}
8-bit prescaler ⁽²⁾
“L”
PWM pulse output
“H”
from TAiOUT pin
“L”
IR bit in the
1
TAiIC register
0
1 / fj X (m + 1)
1 / fj X (m + 1) X n
fj : Frequency of count source
(f1, f2, f8, f32, fC32)
i = 0 to 4
Set to 0 upon accepting an interrupt request or by program
NOTES:
1. The 8-bit prescaler counts the count source.
2. The 8-bit pulse width modulator counts the 8-bit prescaler's underflow signal.
3. m = 0016 to FF16; n = 0016 to FE16.
4. This timing diagram is for the case where the TAi register is 020216, bits TAiTGH and TAiTGL in the ONSF or
TRGSR register is set to 002 (TAiIN pin input), the MR1 bit in the TAiMR register is set to 0 (falling edge), and the
MR2 bit in the TAiMR register is set to 1 (trigger selected by bits TAiTGH and TAiTGL).
Figure 12.14 Example of 8-bit Pulse Width Modulator Operation
Rev. 1.12 Mar.30, 2007 ^{page 116} of 458
REJ09B0101-0112