參數(shù)資料
型號: M37736EHBGS
廠商: Mitsubishi Electric Corporation
英文描述: PROM VERSION OF M37736EHBXXXGP
中文描述: PROM的版本M37736EHBXXXGP
文件頁數(shù): 28/96頁
文件大?。?/td> 1328K
代理商: M37736EHBGS
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
MITSUBISHI MICROCOMPUTERS
M37736MHBXXXGP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
28
When timer Bi is read, the contents of the reload register is read.
Note that, in this mode, the interval from the fall of the TBi
IN
pin 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 the timer Bi mode register is
set to “1” when the timer Bi counter reaches 0000
16
. This flag is cleared
by writing to the corresponding timer Bi mode register. By reading
this flag, the reason why the interrupt request signal is generated,
which is the completion of measurement or the counter overflow, can
be detected. An interrupt request signal may occur because the
counter value is particularly undefined just after counting starts.
Accordingly, make sure to detect the occurrence reason of an interrupt
request signal with the timer Bi overflow flag. This flag is “1” at reset.
When using timer B2 as the clock timer and using timer B1 in the
internal connect mode, functions in this mode are lost.
Fig. 32 Timer Bi mode register bit configuration during pulse period
measurement/pulse width measurement mode
Fig. 33 Pulse period measurement mode operation (example of measuring the interval from the falling edge to next falling one)
Selected clock
source f
i
TBi
IN
Reload register
Counter
Counter
0
Count start flag
Interrupt request signal
7
6
5
4
3
2
1
0
0
1
0
1 0 : Always “10” in pulse period
measurement/pulse width
measurement mode
0 0 : Count from the falling edge of
input signal to the next falling one
0 1 : Count from the rising edge of
input signal to the next rising one
1 0 : Count from the falling edge of input
signal to the next rising one
and from the rising edge to the
next falling one
0 : Always “0” in pulse period
measurement/pulse width
measurement mode (timer B0)
: Not used in pulse period
measurement/pulse width
measurement mode
(timers B1, B2)
Timer Bi overflow flag
Clock source selection bit
0 0 : Select f
2
0 1 : Select f
16
1 0 : Select f
64
1 1 : Select f
512
Timer B0 mode register 5B
16
Timer B1 mode register 5C
16
Timer B2 mode register 5D
16
Addresses
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