SH7261 datasheet(603/1348 Pages) RENESAS

603 / 1348 page

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

Rev. 2.00 Sep. 07, 2007 Page 571 of 1312

REJ09B0320-0200

Figure 12.125 shows an explanatory diagram of the case where an error occurs in normal mode

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

Power-on

reset

TMDR

(normal)

TOER

(1)

PFC

(MTU2)

TIOR

(1 init

0 out)

TSTR

(1)

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

PB, PC, PD*1

High-Z

PB, PC, PD*2

Notes: 1. This pin is multiplexed with TIOC*A.

2. This pin is multiplexed with TIOC*B.

Figure 12.125 Error Occurrence in Normal Mode, Recovery in Normal Mode

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

After a power-on reset, the TMDR setting is for normal mode.

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.)

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.

10. The count operation is stopped by TSTR.

11. Not necessary when restarting in normal mode.

12. Initialize the pins with TIOR.

13. Set MTU2 output with the PFC.

14. Operation is restarted by TSTR.

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