M16CSLASH62 datasheet(115/621 Pages) RENESAS

115 / 621 page

Mitsubishi microcomputers

M16C / 62 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Timer B

100

Figure 1.17.21. Operation timing when measuring a pulse width

Measurement pulse

“H”

Count source

Count start flag

Timer Bi interrupt

request bit

Timing at which counter

reaches “000016”

“1”

Transfer

(measured value)

Transfer

(measured value)

“L”

“0”

Timer Bi overflow flag

“1”

“0”

Note 1: Counter is initialized at completion of measurement.

Note 2: Timer has overflowed.

(Note 1)

Transfer

(measured

value)

(Note 1)

Cleared to “0” when interrupt request is accepted, or cleared by software.

(Note 2)

Transfer

(indeterminate

value)

Reload register

counter

transfer timing

Figure 1.17.20. Operation timing when measuring a pulse period

Count source

Measurement pulse

Count start flag

Timer Bi interrupt

request bit

Timing at which counter

reaches “000016”

“H”

“1”

Transfer

(indeterminate value)

“L”

“0”

Timer Bi overflow flag

“1”

“0”

Note 1: Counter is initialized at completion of measurement.

Note 2: Timer has overflowed.

(Note 1)

When measuring measurement pulse time interval from falling edge to falling edge

(Note 2)

Cleared to “0” when interrupt request is accepted, or cleared by software.

Transfer

(measured value)

“1”

Reload register

counter

transfer timing

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