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R01UH0336EJ0102 Rev.1.02
Page 1389 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 24 Peripheral Interconnection (PIC)
(4)
Logical Operation Circuit (FN0i) (i = 0, 1)
The logical operation circuit synthesizes the triangle wave PWM output
(TOUT04 and TOUT05) from the triangle wave PWM output function with the
dead time and the outputs UO1 and UO2 from the combinational circuit
PFN001 to generate PWM with variable dead time range pulses inserted.
The synthesizing logic of the logical operation circuit is selected with
PIC0REG203k (k = 00 to 06).
Set the synthesizing logic for this function as shown in Table 24-17, Setting of
Logical Operation Circuit (FN0i, i = 0, 1) and TAUB0O10 and TAUB0O11
Outputs. The pins TAUB0O10 and TAUB0O11 output the signals synthesized
according to the specified logic.
With the logical operations above, TAUB can perform the variable dead time
control for securing accurate output when the duty cycle is close to 0% or
100%, thus enabling output of triangle wave PWM more accurate than that
provided by the triangle wave PWM output function with the dead time of the
TAUB function.
The values to be set for V, VB, W, and WB phases are the same as those for U
phase, although the channels and the register bits are different as shown in
Figure 24-6, Block Diagram.
The PIC provides the connection for inserting the pulses generated by the one-
shot pulse output function into the PWM signal generated by the triangle wave
PWM output function with the dead time through use of the combinational
circuit and the logical operation circuit, which are provided as the PIC
functions.
Figures in the following pages show the timing charts of the high accuracy
triangle wave PWM output function with the dead time.
Table 24-17
Setting of Logical Operation Circuit (FN0i, i = 0, 1) and TAUB0O10 and
TAUB0O11 Outputs
U phase output (TOUT04)
Active Level
PIC0REG20302 to PIC0REG20300
TAUB0O10 Pin Output Waveform
Active high
(TAUB0TOL04 = 0)
100
B
AND operation between FN00 B (TOUT04)
and FN00 A (UO1)
Active low
(TAUB0TOL04 = 1)
101
B
OR operation between FN00 B (TOUT04) and
FN00 A (UO1)
UB phase output (TOUT05)
Active Level
PIC0REG20306 to PIC0REG20304
TAUB0O11 Pin Output Waveform
Active high
(TAUB0TOL05 = 0)
100
B
AND operation between FN01 B (TOUT05)
and FN01 A (UO2)
Active low
(TAUB0TOL05 = 1)
101
B
OR operation between FN01 B (TOUT05) and
FN01 A (UO2)
Содержание V850 Series
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