SH7137_09 Datasheet, PDF (12/24 Pages) Renesas Technology Corp – Output of Complementary Pairs of PWM Signals in Three Phases

SH7280 Group
MTU2: Output of Complementary Pairs of PWM Signals in Three Phases
(Complementary PWM Mode)
(a) TGRB_3 = 2 × TDDR
TCNT_3 and TCNT_4
TGRA_3
TCDR
TCNTS
TGRB_3: Value of comparison register
: Active level (low)
Td:
Short-circuit prevention interval setting
TGRB_3 (= 2 × TDDR)
TDDR
H'0000
TCNT_3
TCNT_4
Td
Td
TIOC3B pin
(PWM output 1, positive)
1
0
TIOC3D pin
1
(PWM output 1', inverse phase) ₀
OFF
ON
ON
OFF
OFF
ON
OFF
ON
(b) TGRB_3 = TDDR
TCNT_3 and TCNT_4
TGRA_3
TCDR
TCNTS
TGRB_3 (= TDDR) TDDR
H'0000
TCNT_3
TCNT_4
Td
TIOC3B pin
(PWM output 1, positive)
1
0
TIOC3D pin
1
(PWM output 1', inverse phase) ₀
Fixed to OFF (high)
(c) TGRB_3 = H'0000
TCNT_3 and TCNT_4
TGRA_3
TCDR
ON
TCNTS
OFF
ON
OFF
TGRB_3: Value of comparison register
TDDR
TGRB_3 (= H'0000) H'0000
TCNT_3
TCNT_4
Td
TIOC3B pin
(PWM output 1, positive)
1
0
TIOC3D pin
1
(PWM output 1', inverse phase) ₀
Fixed to ON (low)
Fixed to OFF (high)
Figure 10 Examples of PWM Waveform Output (2)
REJ06B0887-0100/Rev.1.00
June 2009
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