SH7261 datasheet(629/1348 Pages) RENESAS

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

Rev. 2.00 Sep. 07, 2007 Page 597 of 1312

REJ09B0320-0200

(27) Operation when Error Occurs during Reset-Synchronized PWM Mode Operation, and

Operation is Restarted in PWM Mode 1

Figure 12.151 shows an explanatory diagram of the case where an error occurs in reset-

synchronized PWM mode and operation is restarted in PWM mode 1 after re-setting.

Power-on

reset

MTU2

module output

PB17

PB16

PB19

TOCR

TMDR

(RPWM)

PFC

(MTU2)

TOER

(1)

TSTR

(1)

Match

Error

occurs

PFC

(PORT)

TSTR

(0)

TMDR

(PWM1)

TIOR

(1 init

0 out)

PFC

(MTU2)

TSTR

(1)

TIOC3A

TIOC3B

TIOC3D

Port output

Not initialized (TIOC3B)

Not initialized (TIOC3D)

High-Z

Figure 12.151 Error Occurrence in Reset-Synchronized PWM Mode,

Recovery in PWM Mode 1

1 to 10 are the same as in figure 12.150.

11. Set PWM mode 1. (MTU2 positive phase output is low, and negative phase output is high.)

12. Initialize the pins with TIOR. (In PWM mode 1, the TIOC *B side is not initialized.)

13. Set MTU2 output with the PFC.

14. Operation is restarted by TSTR.

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