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10.8 TOU (Output-Related 24-Bit Timer)

MULTIJUNCTION TIMERS

10-198

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

10.8.21 Shorting Prevention Function

Before setting the shorting-prevention function enable/disable bit, be sure to stop the TOUn_0 through TOUn_

5 counters. (Setting this bit while the timer is enabled for counting is prohibited.)

When the shorting-prevention function is enabled, make sure each timer is run in either of the following opera-

tion modes. (Using timers in any other modes is prohibited.)

TOUn_0 (2, 4)Single-shot PWM mode

TOUn_1 (3, 5)Single-shot output mode

When the shorting-prevention function is enabled, the TOUn enable source select bits of TOUn_1 (3, 5) have

no effect, so that these timers are invoked by an underflow of TOUn_0 (2, 4).

Use the TOUn_1 (3, 5) reload register to set the shorting-prevention time. At this time, note that the shorting-

prevention time actually is the set value of the reload register + 3. The set value of the reload register must

satisfy the condition given below.

Set value of the TOUn_1 (3, 5) reload register

≤≤≤≤≤ set value of the TOUn_0 (2, 4) reload 1 register – 4

Before the shorting-prevention function can be enabled, designated values must be set in the F/F data register

and the F/F data register for the shorting-prevention function.

• To output "H" level signal first

Set a "1" in the F/F data register and a "0" in the F/F data register for the shorting-prevention function.

• To output "L" level signal first

Set a "0" in the F/F data register and a "1" in the F/F data register for the shorting-prevention function.

If the same value is set in the F/F data register and the F/F data register for the shorting-prevention function, a

fixed-level signal is output.

When the shorting-prevention function is enabled, writing H’FFFF to the TOUn_0 (2, 4) reload register 0 or the

TOUn_0 (2, 4) reload register 1 is prohibited.

32186 Datasheet(PDF) 494 Page - Renesas Technology Corp