M16C6S_09 Datasheet, PDF (91/208 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

M16C/6S Group
Timer A
1 / fi X (2¹⁶ – 1)
Count source
Input signal to
“H”
TAiIN pin
“L”
PWM pulse output ^{“H”}
from TAiOUT pin
“L”
IR bit of TAiIC
“1”
register
“0”
Trigger is not generated by this signal
1 / fj X n
fj : Frequency of count source
(f1, f2, f8, f32)
i = 0 to 4
Set to “0” upon accepting an interrupt request or by writing in program
Note 1: n = 000016 to FFFE16.
Note 2: This timing diagram is for the case where the TAi register is ‘0003 16,’ the TAiGH and TAiGL bits of ONSF
or TRGSR register = ‘002’ (TAi IN pin input), the MR1 bit of TAiMR register = 1 (rising edge), and the MR2
bit of TAiMR register = 1 (trigger selected by TAiTGH and TAiTGL bits).
Figure 1.12.11. Example of 16-bit Pulse Width Modulator Operation
Count source (Note1)
1 / fj X (m + 1) X (2⁸ – 1)
Input signal to
“H”
TAiIN pin
“L”
Underflow signal of ^{“H”}
8-bit prescaler (Note2) _{“L”}
PWM pulse output ^{“H”}
from TAiOUT pin
“L”
IR bit of TAiIC
“1”
register
“0”
1 / fj X (m + 1)
1 / fj X (m + 1) X n
fj : Frequency of count source
(f1, f2, f8, f32)
i = 0 to 4
Set to “0” upon accepting an interrupt request or by writing in program
Note 1: The 8-bit prescaler counts the count source.
Note 2: The 8-bit pulse width modulator counts the 8-bit prescaler's underflow signal.
Note 3: m = 0016 to FF16; n = 0016 to FE16.
Note 4: This timing diagram is for the case where the TAi register is ‘0202 16,’ the TAiGH and TAiGL bits of ONSF or
TRGSR register = ‘002’ (TAi IN 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 1.12.12. Example of 8-bit Pulse Width Modulator Operation
Rev.5.01 Dec 10, 2009 page 91 of 201
REJ03B0014-0501