M32C83T datasheet(171/527 Pages) RENESAS

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Page 148

14. Timer (Timer A)

)

(

Figure 14.12 TA0MR to TA4MR Registers

Timer Ai Mode Register (i=0 to 4) (One-Shot Timer Mode)

Symbol

Address

After Reset

TA0MR to TA4MR

035616, 035716, 035816, 035916, 035A16

0000 0X002

TMOD0

TMOD1

Operation Mode

Select Bit

Trigger Select Bit

Set to "0" in the one-shot timer mode

MR1

MR3

MR2

TCK0

TCK1

Count Source

Select Bit

External Trigger Select

Bit(1)

0 : Falling edge of input signal to TAiIN pin

1 : Rising edge of input signal to TAiIN pin

0 0 : f1

0 1 : f8

1 0 : f2n(2)

1 1 : fC32

1 0 : One-shot timer mode

b1b0

Bit Name

Function

Bit

Symbol

b7b6

NOTES:

1. The MR1 bit setting is enabled only when the TAiTGH to TAiTGL bits in the TRGSR register are set

to "002" (input to the TAiIN pin). The MR1 bit can be set to either "0" or "1" when the TAiTGH and

TAiTGL bits are set to "012" (TB2 overflow and underflow), "102" (TAi overflow and underflow) or

"112" (TAi overflow and underflow).

2. The CNT3 to CNT0 bits in the TCSPR register select no division (n=0) or divide-by-2n (n=1 to 15).

0 : The TAiOS bit is enabled

1 : Selected by the TAiTGH and TAiTGL

bits

(b2)

Nothing is assigned. When write, set to "0".

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