HD643303x Hitachi, HD643303x Datasheet - Page 239

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

Examples of PWM Mode: Figure 8-29 shows examples of operation in PWM mode. The PWM
waveform is output from the TIOCA pin. The output goes to 1 at compare match with GRA, and
to 0 at compare match with GRB.
In the examples shown, TCNT is cleared by compare match with GRA or GRB. Synchronized
operation and free-running counting are also possible.
GRA
GRB
H'0000
TIOCA
GRB
GRA
H'0000
TIOCA
TCNT value
TCNT value
Figure 8-29 PWM Mode (Example 1)
a. Counter cleared by GRA
b. Counter cleared by GRB
Counter cleared by compare match with GRA
Counter cleared by compare match with GRB
224
Time
Time