HD64F7047 datasheet(323/764 Pages) RENESAS

323 / 764 page

Rev. 2.00, 09/04, page 283 of 720

Operation when Error Occurs during PWM Mode 1 Operation, and Operation is Restarted

in Normal Mode: Figure 10.91 shows an explanatory diagram of the case where an error occurs

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

RESET

TMDR

(PWM1)

TOER

(1)

PFC

(MTU)

TIOR

(1 init

0 out)

TSTR

(1)

Match

Error

occurs

PFC

(PORT)

TSTR

(0)

TMDR

(normal)

TIOR

(1 init

0 out)

PFC

(MTU)

TSTR

(1)

MTU module

output

TIOC*A

TIOC*B

Port output

PEn

• Not initialized (TIOC*B)

n=0 to 15

High-Z

Figure 10.91 Error Occurrence in PWM Mode 1, Recovery in Normal Mode

After a reset, MTU output is low and ports are in the high-impedance state.

Set PWM mode 1.

For channels 3 and 4, enable output with TOER before initializing the pins with TIOR.

Initialize the pins with TIOR. (The example shows initial high output, with low output on

compare-match occurrence. In PWM mode 1, the TIOC*B side is not initialized.)

Set MTU output with the PFC.

The count operation is started by TSTR.

Output goes low on compare-match occurrence.

An error occurs.

Set port output with the PFC and output the inverse of the active level.

10. The count operation is stopped by TSTR.

11. Set normal mode.

12. Initialize the pins with TIOR.

13. Set MTU output with the PFC.

14. Operation is restarted by TSTR.

HD64F7047 Datasheet(PDF) 323 Page - Renesas Technology Corp

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