M16C6NK Datasheet, PDF (147/404 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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M16C/6N Group (M16C/6NK, M16C/6NM)
13. Timers
1 / fi ✕ (2¹⁶ — 1)
Count source
Input signal to
"H"
TAiIN pin
"L"
PWM pulse output ^"H"
from TAiOUT pin _"L"
IR bit in TAiIC
"1"
register
"0"
Trigger is not generated by this signal
1 / fj ✕ n
i = 0 to 4
Set to "0" upon accepting an interrupt request or by writing in program
fj: Frequency of count source (f1, f2, f8, f32, fC32)
NOTES:
1. n = 0000h to FFFEh.
2. This timing diagram is the following case.
TAi register = 0003h
The TAiTGH and TAiTGL bits in the ONSF or TRGSR register = 00b (TAiIN pin input)
The MR1 bit in the TAiMR register = 1 (rising edge)
The MR2 bit in the TAiMR register = 1 (trigger selected by the TAiTGH and TAiTGL bits)
Figure 13.13 Example of 16-bit Pulse Width Modulator Operation
Count source ⁽¹⁾
1 / fj ✕ (m + 1) ✕ (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 TAiIC
"1"
register
"0"
1 / fj ✕ (m + 1)
1 / fj ✕ (m + 1) ✕ n
i = 0 to 4
Set to "0" upon accepting an interrupt request or by writing in program
fj: Frequency of count source (f1, f2, f8, f32, fC32)
NOTES:
1. The 8-bit prescaler counts the count source.
2. The 8-bit pulse width modulator counts the output from the 8-bit prescaler underflow signal.
3. m = 00h to FFh; n = 00h to FEh.
4. This timing diagram is the following case.
TAi register = 0202h
The TAiTGH and TAiTGL bits in the ONSF or TRGSR register = 00b (TAiIN pin input)
The MR1 bit in the TAiMR register = 0 (falling edge)
The MR2 bit in the TAiMR register = 1 (trigger selected by the TAiTGH and TAiTGL bits)
Figure 13.14 Example of 8-bit Pulse Width Modulator Operation
Rev.2.00 Nov 28, 2005 page 129 of 378
REJ09B0124-0200