3069RF-ZTAT Datasheet, PDF (376/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

Examples of PWM Mode: Figure 9.27 shows examples of operation in PWM mode. In PWM
mode TIOCA becomes an output pin. The output goes to 1 at compare match with GRA, and to 0
at compare match with GRB.
In the examples shown, 16TCNT is cleared by compare match with GRA or GRB. Synchronized
operation and free-running counting are also possible.
16TCNT value
GRA
Counter cleared by compare match A
GRB
H'0000
Time
TIOCA
a. Counter cleared by GRA (TOA = 1)
16TCNT value
GRB
Counter cleared by compare match B
GRA
H'0000
Time
TIOCA
b. Counter cleared by GRB (TOA = 0)
Figure 9.27 PWM Mode (Example 1)
Rev. 5.0, 09/04, page 354 of 978