參數(shù)資料
型號(hào)： M30840MCT-XXXGP
元件分類(lèi)： 微控制器/微處理器
英文描述： 32-BIT, MROM, 32 MHz, MICROCONTROLLER, PQFP100
封裝： 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件頁(yè)數(shù)： 42/91頁(yè)
文件大小： 903K
代理商： M30840MCT-XXXGP
46
38C2 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Some
parametric
limits
are
subject
to change.
CLOCK OUTPUT FUNCTION
A system clock
φ can be output from I/O port P36.The triple function
of I/O port, timer 2 output function and system clock
φ output function
is performed by the clock output control register (address 001816)
and the timer 2 output selection bit of the timer 12 mode register
(address 002516).
In order to output a system clock
φ from I/O port P36, set the timer 2
output selection bit and bit 0 of the clock output control register to “1”.
When the clock output function is selected, a clock is output while
the direction register of port P36 is set to the output mode.
P36 is switched to the port output or the output (timer 2 output and
the clock output) except port at the cycle after the timer 2 output
control bit is switched.
Fig. 46 Block diagram of Clock output function
Fig. 45 Structure of clock output control register
Timer 2 latch (8)
Timer 2 (8)
1/2
Q
S
T
T2OUT output
edge switch bit
Timer 2 output control bit
P36 latch
Timer 2 output selection bit
P36 direction register
P36/T2OUT/
φ
System clock
φ
P36 clock output
control bit
b7
b0
Timer 12 mode register (address 002516)
T12M
Timer 2 output selection bit
0: I/O port
1: Timer 2 output
“0”
“1”
“0”
“1”
b0
Not used (returns “0” when read)
(Do not write “1” to these bits.)
P36 clock output control bit
0: Timer 2 output
1: System clock
φ output
Clock output control register
(CKOUT : address 001816)
b7
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