M16C30P_07 Datasheet, PDF (125/317 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/30 SERIES

M16C/30P Group
14. 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
fj : Frequency of count source
(f1, f2, f8, f32, fC32)
i = 0 to 2
Set to “0” upon accepting an interrupt request or by writing in program
NOTES :
1. n = 0000h to FFFEh.
2. This timing diagram is for the case where the TAi register is “0003h”, the TAiTGH and TAiTGL bits in the ONSF or TRGSR
register = 00b (TAiIN pin input), the MR1 bit of TAiMR register = 1 (rising edge), and the MR2 bit in the TAiMR register = 1
(trigger selected by TAiTGH and TAiTGL bits).
Figure 14.13 Example of 16-bit Pulse Width Modulator Operation
Count source ⁽¹⁾
1 / fj × (m + 1) × (2⁸ − 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
fj : Frequency of count source
(f1, f2, f8, f32, fC32)
i = 0 to 2
Set to “0” upon accepting an interrupt request or by writing in program
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 for the case where the TAi register is “0202h”, the TAiTGH and TAiTGL bits of ONSF or TRGSR
register = 00b (TAiIN pin input), the MR1 bit of TAiMR register = 0 (falling edge), and the MR2 bit of TAiMR register = 1
(trigger selected by TAiTGH and TAiTGL bits).
Figure 14.14 Example of 8-bit Pulse Width Modulator Operation
Rev.1.22 Mar 29, 2007 Page 109 of 291
REJ09B0179-0122