SH7261 datasheet(627/1348 Pages) RENESAS

627 / 1348 page

Section 12 Multi-Function Timer Pulse Unit 2 (MTU2)

Rev. 2.00 Sep. 07, 2007 Page 595 of 1312

REJ09B0320-0200

(25) Operation when Error Occurs during Complementary PWM Mode Operation, and

Operation is Restarted in Reset-Synchronized PWM Mode

Figure 12.149 shows an explanatory diagram of the case where an error occurs in complementary

PWM mode and operation is restarted in reset-synchronized PWM mode.

Power-on

reset

MTU2

module output

PB17

PB16

PB19

TOCR

TMDR

(CPWM)

PFC

(MTU2)

TOER

(1)

TSTR

(1)

Match

Error

occurs

PFC

(PORT)

TSTR

(0)

TMDR

(normal)

TOER

(0)

TOCR

TMDR

(RPWM)

TOER

(1)

PFC

(MTU2)

TSTR

(1)

TIOC3A

TIOC3B

TIOC3D

Port output

High-Z

Figure 12.149 Error Occurrence in Complementary PWM Mode,

Recovery in Reset-Synchronized PWM Mode

1 to 10 are the same as in figure 12.145.

11. Set normal mode. (MTU2 output goes low.)

12. Disable channel 3 and 4 output with TOER.

13. Select the reset-synchronized PWM mode output level and cyclic output enabling/disabling

with TOCR.

14. Set reset-synchronized PWM.

15. Enable channel 3 and 4 output with TOER.

16. Set MTU2 output with the PFC.

17. Operation is restarted by TSTR.

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