SH7211_09 Datasheet, PDF (14/26 Pages) Renesas Technology Corp – MTU2 Three-Phase Complementary PWM Output Function

SH7211 Group
MTU2 Three-Phase Complementary
PWM Output Function (Complementary PWM Mode)
(a) TGRB_3 = 2 * TDDR ^{TCNT_3, TCNT_4}
TGRA_3
TCDR
TCNTS
TGRB_3: Compare register value
: Active level (low level)
Td: Dead time setting
TCNTS: Sub-counter
TGRB_3 (=2*TDDR)
TDDR
H'0000
TCNT_3
TCNT_4
Td
Td
TIOC3B pin (PWM 1
output 1 positive phase) 0
TIOC3D pin (PWM output 1
1' antiphase) 0
OFF
ON
ON
OFF
(b) TGRB_3 = TDDR
TCNT_3, TCNT_4
TGRA_3
TCDR
TCNTS
OFF
ON
OFF
ON
TGRB_3 (=TDDR) TDDR
H'0000
TCNT_3
TCNT_4
Td
TIOC3B pin (PWM 1
output 1 positive phase) 0
TIOC3D pin (PWM output 1
1' antiphase) 0
ON
Constant-off (always high)
(c) TGRB_3 = H'0000
TCNT_3, TCNT_4
TGRA_3
TCDR
TCNTS
OFF
ON
OFF
TGRB_3: Compare register value
TDDR
TGRB_3 (=H'0000) H'0000
TCNT_3
TCNT_4
Td
TIOC3B pin (PWM 1
output 1 positive phase) 0
TIOC3D pin (PWM output 1
1' antiphase) 0
Constant-on (always low)
Constant-off (always high)
Figure 10 Examples of PWM Waveform Output (2)
REJ06B0891-0100/Rev.1.00
July 2009
Page 14 of 26