SH7101 datasheet(257/486 Pages) RENESAS

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8. Multi-Function Timer Pulse Unit (MTU)

Rev.2.00 Sep. 27, 2007 Page 223 of 448

REJ09B0394-0200

(1) Operation when Error Occurs during Normal Mode Operation, and Operation is

Restarted in Normal Mode: Figure 8.84 shows an explanatory diagram of the case where an

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

RESET

TMDR

(normal)

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

Note: n = 0 to 15

Hi-Z

Figure 8.84 Error Occurrence in Normal Mode, Recovery in Normal Mode

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

After a 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 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. Not necessary when restarting in normal mode.

12. Initialize the pins with TIOR.

13. Set MTU output with the PFC.

14. Operation is restarted by TSTR.

SH7101 Datasheet(PDF) 257 Page - Renesas Technology Corp

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