M32CSLASH86 datasheet(302/505 Pages) RENESAS

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Page 279

22. Intelligent I/O (Time Measurement Function)

)

(

Figure 22.14 Time Measurement Function (2)

n-2

n-1

n+1

n+2

n+3

n+4

n+5

n+6

n+7

n+8

n+9 n+10 n+11 n+12 n+13 n+14

n+5

n+8

n-2

n-1

n+1

n+2

n+3

n+4

n+7

n+8

n+9 n+10 n+11 n+12 n+13 n+14

nn+2

n+5

n+8

n+12

Delayed by max. 1 clock

fBT1

Base timer

G1TMj register

(1)

When selecting the rising edge as a time measurement trigger

(The CTS1 and CTS0 bits in the G1TMCRj register (j=0 to 7) are set to "012")

TM1jR bit(1)

(Note 2)

(2)

When selecting both edges as a time measurement trigger

(The CTS1 and CTS0 bits are set to "112")

Maximum 3.5 f1 or

fBT1(1) clock cycles

(3) Trigger signal when using the digital filter

(The DF1 and DF0 bits in the G1TMCRj register are set to "102" or "112")

Signal, which does not match

three times, is stripped off

fBT1

Base timer

INPC1j pin

G1TMj register

TM1jR bit(1)

f1 or fBT1(1)

INPC1j pin

Trigger signal

after passing

the digital filter

NOTES:

1. Bits in the IIO0IR to IIO4IR, IIO08IR to IIO10IR registers. See Figure 11.14 about the TM1jR bit.

2. No interrupt is generated if the microcomputer receives a trigger signal when the TM1jR bit is set to "1".

However, the value of the G1TMj register changes.

NOTES:

1. fBT1 when the DF1 and DF0 bits are set to "102", and f1 when to "112".

The trigger signal is delayed

by the digital filter

Write "0" by program

if setting to "0"

Write "0" by program

if setting to "0"

n+5

n+6

(Note 2)

"H"

"L"

"H"

"L"

"1"

"0"

"1"

"0"

"H"

"L"

"H"

"L"

INPC1j pin

n+6

NOTES:

1. Bits in the IIO0IR to IIO4IR, IIO8IR to IIO10IR registers. See Figure 11.14 about the TM1jR bit.

2. Input pulse applied to the INPC1j pin requires 1.5 fBT1 clock cycles or more.

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