M37754 Mitsubishi, M37754 Datasheet - Page 35

• Manufacturer Part Number: M37754
• Description: SINGLE-CHIP 16BIT CMOS MICROCOMPUTER
• Manufacturer: Mitsubishi

When timer Bi is read, the contents of the reload register is read.
Note that in this mode, the interval between the fall of the TBi
input signal to the next rise or from the rise to the next fall must be at
least two cycles of the timer count source.
Timer Bi overflow flag which is bit 5 of timer Bi mode register is set to
“1” when the timer Bi counter reaches 0000
pulse width or pulse period is longer than that which can be mea-
sured by a 16-bit length.
This flag is cleared by writing data to the corresponding timer Bi
mode register. This bit is set to “1”at reset.
Fig. 39 Pulse period measurement mode operation (example of measuring the interval between the falling edge to next falling one)
Fig. 40 Pulse width measurement mode operation
Selected clock
source Pfi
TBi
Reload register
Counter
Count start flag
Interrupt request signal
Selected clock
source Pfi
TBi
Reload register
Counter
Count start flag
Interrupt request signal
IN
IN
0
0
counter
counter
16
, which indicates that a
M37754M8C-XXXGP, M37754M8C-XXXHP
IN
pin
M37754S4CGP, M37754S4CHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
35