Datasheet

Section 14 Timer Z

Rev. 3.00 Mar. 15, 2006 Page 274 of 526

REJ09B0060-0300

Figures 14.42 and 14.43 show the operation examples when buffer operation has been designated

for GRB_0 and GRD_0 in complementary PWM mode. These are examples when a PWM

waveform of 0% duty is created by using the buffer operation and performing GRD_0 ≥ GRA_0.

Data is transferred from GRD_0 to GRB_0 according to the settings of CMD_0 and CMD_1 when

TCNT_0 and GRA_0 are compared and their contents match or when TCNT_1 underflows.

However, when GRD_0 ≥ GRA_0, data is transferred from GRD_0 to GRB_0 when TCNT_1

underflows regardless of the setting of CMD_0 and CMD_1. When GRD_0 = H'0000, data is

transferred from GRD_0 to GRB_0 when TCNT_0 and GRA_0 are compared and their contents

match regardless of the settings of CMD_0 and CMD_1.

GRA_0

H'0000

H'0999

FTIOB0

FTIOD0

TCNT_0

TCNT values

Time

GRB_0 (When restored, data will be transferred

to the saved location regardless of the

CMD1 and CMD0 values)

TCNT_1

H'0999

H'1FFF

H'0999

GRD_0

H'1FFF

GRB_0

Figure 14.42 Buffer Operation (3)

(Buffer Operation in Complementary PWM Mode CMD1 = CMD0 = 1)