R5F72115D160FPV datasheet(605/1228 Pages) RENESAS

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Section 10 Multi-Function Timer Pulse Unit 2 (MTU2)

Rev. 2.00 May. 08, 2008 Page 581 of 1200

REJ09B0344-0200

(13) Operation when Error Occurs during PWM Mode 2 Operation, and Operation is

Restarted in Normal Mode

Figure 10.147 shows an explanatory diagram of the case where an error occurs in PWM mode 2

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

RESET

TMDR

(PWM2)

TIOR

(1 init

0 out)

TSTR

(1)

PFC

(MTU2)

Match

Error

occurs

PFC

(PORT)

TSTR

(0)

TMDR

(normal)

TIOR

(1 init

0 out)

PFC

(MTU2)

TSTR

(1)

MTU2 module output

TIOC*A

TIOC*B

Port output

PEn

Not initialized (cycle register)

n = 0 to 15

High-Z

Figure 10.147 Error Occurrence in PWM Mode 2, Recovery in Normal Mode

After a reset, MTU2 output is low and ports are in the high-impedance state.

Set PWM mode 2.

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

compare-match occurrence. In PWM mode 2, the cycle register pins are not initialized. In the

example, TIOC*A is the cycle register.)

Set MTU2 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.

The count operation is stopped by TSTR.

10. Set normal mode.

11. Initialize the pins with TIOR.

12. Set MTU2 output with the PFC.

13. Operation is restarted by TSTR.

R5F72115D160FPV Datasheet(PDF) 605 Page - Renesas Technology Corp

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