m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 177

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

TIMER B
8-26
8.5 Pulse period/pulse width measurement mode
Fig. 8.5.5 Operation examples during pulse period measurement (when free-run count type is selected)
Reload register
Timing at which counter is
Measurement pulse
cleared to “0000
Timer Bi interrupt
The above applies when measurement is performed for an interval from one falling edge to the next
Transfer timing
falling edge of the measurement pulse.
Counter is initialized by the first valid edge.
Counter overflows.
Undefined
Count start bit
Count source
FFFF
0000
value
request bit
Counter
16
16
16
”
Cleared to “0” by software.
Undefined
7905 Group User’s Manual Rev.1.0
Cleared to “0” when interrupt request is accepted or
cleared to “0” by software.
(undefined value)
Transferred
(measured value)
Transferred
Time