M306V2EEFS datasheet(96/271 Pages) RENESAS

96 / 271 page

Rev.1.40

Oct 06, 2004 page 96 of 269

M306V2ME-XXXFP, M306V2EEFP

Figure 2.10.25 Operation timing when measuring a pulse width

Figure 2.10.24 Operation timing when measuring a pulse period

Count source

Measurement pulse

Count start flag

Timer Bi interrupt

request bit

Timing at which counter

reaches “0000 16”

“H”

“1”

Transfer

(indeterminate value)

“L”

“0”

Timer Bi overflow flag

“1”

“0”

Notes 1: Counter is initialized at completion of measurement.

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

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”

Notes 1: Counter is initialized at completion of measurement.

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

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