HD64F3687HV Datasheet, PDF (251/538 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

Section 13 Timer Z
13.4.6 Reset Synchronous PWM Mode
Three normal- and counter-phase PWM waveforms are output by combining channels 0 and 1 that
one of changing points of waveforms will be common.
In reset synchronous PWM mode, the FTIOB0 to FTIOD0 and FTIOA1 to FTIOD1 pins become
PWM-output pins automatically. TCNT_0 performs an increment operation. Tables 13.4 and
13.5 show the PWM-output pins used and the register settings, respectively.
Figure 13.26 shows the example of reset synchronous PWM mode setting procedure.
Table 13.4 Output Pins in Reset Synchronous PWM Mode
Channel
0
0
0
Pin Name
FTIOC0
FTIOB0
FTIOD0
Input/Output
Output
Output
Output
1
FTIOA1 Output
1
FTIOC1 Output
1
FTIOB1 Output
1
FTIOD1 Output
Pin Function
Toggle output in synchronous with PWM cycle
PWM output 1
PWM output 1 (counter-phase waveform of PWM
output 1)
PWM output 2
PWM output 2 (counter-phase waveform of PWM
output 2)
PWM output 3
PWM output 3 (counter-phase waveform of PWM
output 3)
Table 13.5 Register Settings in Reset Synchronous PWM Mode
Register
TCNT_0
TCNT_1
GRA_0
GRB_0
GRA_1
GRB_1
Description
Initial setting of H'0000
Not used (independently operates)
Sets counter cycle of TCNT_0
Set a changing point of the PWM waveform output from pins FTIOB0 and
FTIOD0.
Set a changing point of the PWM waveform output from pins FTIOA1 and
FTIOC1.
Set a changing point of the PWM waveform output from pins FTIOB1 and
FTIOD1.
Rev.5.00 Nov. 02, 2005 Page 217 of 500
REJ09B0027-0500