參數(shù)資料
型號(hào)： M37753S4CHP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, 40 MHz, MICROCONTROLLER, PQFP80
封裝： PLASTIC, QFP-80
文件頁(yè)數(shù)： 38/110頁(yè)
文件大?。?/td> 1439K
代理商： M37753S4CHP
MITSUBISHI MICROCOMPUTERS
M37753M8C-XXXFP, M37753M8C-XXXHP
M37753S4CFP, M37753S4CHP
32
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Some
parametric
limits
are
subject
to change.
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
TIMER B
Figure 35 shows a block diagram of timer B.
Timer B has three modes: timer mode, event counter mode, and
pulse period measurement/pulse width measurement mode. The
mode is selected with bits 0 and 1 of the timer Bi mode register (i=0
to 2). Each of these modes is described below.
(1) Timer mode [00]
Figure 36 shows the bit configuration of the timer Bi mode register
during timer mode. Bits 0 and 1 of the timer Bi mode register must
always be “0” in timer mode.
Bits 6 and 7 are used to select the clock source. The counting of the
selected clock starts when the count start bit is “1” and stops when
“0”.
As shown in Figure 19, the timer Bi count start bit is at the same ad-
dress as the timer Ai count start bit. The count is decremented, an
interrupt occurs, and the interrupt request bit in the timer Bi interrupt
control register is set when the contents becomes 000016. At the
same time, the contents of the reload register is stored in the counter
and count is continued.
Timer Bi does not have a pulse output function or a gate function like
timer A.
When data is written to timer Bi halted, it is written to the reload reg-
ister and the counter. When data is written to timer Bi which is busy,
the data is written to the reload register, but not to the counter. The
new data is reloaded from the reload register to the counter at the
next reload time and counting continues.
The contents of the counter can be read at any time.
Fig. 35 Timer B block diagram
Data bus (odd)
Data bus (even)
Reload register (16)
Counter (16)
Count start bit
Event counter
Note: Perform write and read to/from timer Bi register in the condition of 16-bit data length : data length flag (m) =“0”.
(4016)
Counter reset
circuit
Addresses
Timer B0 5116 5016
Timer B1 5316 5216
Timer B2 5516 5416
Timer
Pulse period measurement/Pulse
width measurement
Clock source selection
Pf2
Pf16
Pf64
Pf512
TBiIN
(i = 0 – 2)
Polarity selection
and edge pulse
generator
(Lower 8 bits)
(Higher 8 bits)
相關(guān)PDF資料
PDF描述
M37753M8C-XXXFP 16-BIT, MROM, 40 MHz, MICROCONTROLLER, PQFP80
M37753S4CFP 16-BIT, 40 MHz, MICROCONTROLLER, PQFP80
M37753S4CFP 16-BIT, 40 MHz, MICROCONTROLLER, PQFP80
M37753M8C-XXXHP 16-BIT, MROM, 40 MHz, MICROCONTROLLER, PQFP80
M37754M6C-XXXGP 16-BIT, MROM, 40 MHz, MICROCONTROLLER, PQFP100
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