參數(shù)資料
型號(hào)： M37733MHBXXXFP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 25 MHz, MICROCONTROLLER, PQFP80
封裝： 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件頁(yè)數(shù)： 7/89頁(yè)
文件大?。?/td> 1506K
代理商： M37733MHBXXXFP
15
MITSUBISHI MICROCOMPUTERS
M37733MHBXXXFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
PRELIMINARY
Notice:
This
is not
a final
specification.
Some
parametric
limits
are
subject
to change.
By setting the port function control register, the INT2/Key input interrupt
function can be switched to the key input interrupt function which
uses the KI0 to KI3 inputs. Figure 11 shows the bit configuration of the
port function control register, and Figure 12 shows the INT2/Key input
interrupt input circuit block diagram.
When the key input interrupt selection bit of the port function control
register is “0”, a signal is input from the INT2 pin to the INT2 /Key input
interrupt control circuit and the INT2 interrupt is normally performed.
When the key input interrupt selection bit is “1”, signals input from
the KI0 to KI3 pins are inverted, and then the logical sum of these
signals is input to the INT2 interrupt control circuit. In this case, the
external interrupt which uses the KI0 to KI3 pins is performed. (Pins
KI0
to KI3 correspond to ports P54 to P57, respectively.) Additionally,
by setting the port P6 pull-up selection bit 1 to “1”, the INT2 input is
added to that logical sum, so that the external interrupt which uses
the inputs KI0 to KI3 and INT2 is performed. When using the key input
interrupt, it is necessary to select the edge sense which uses the
falling edge by setting the INT2 /Key input interrupt control register.
Because of this selection, a key input interrupt request occurs when
“L” is input to one of the KI0 to KI3 and INT2 pins. The interrupt vector
and the interrupt control register are common to the INT2 and key
input interrupts.
Pull-up resistors (transistors) can be added to the KI0 to KI3 pins by
setting “1” to the port P5 pull-up selection bit and “0” to the contents
of the port P5i (i = 4 to 7) direction register. Similarly, a pull-up resistor
can be added to the INT2 pin by setting “1” to the port P6 pull-up
selection bit 1 and “0” to the content of the port P64 direction register.
With the key input interrupt and the pull-up function, the key input
circuit is easily composed.
Fig. 12 INT2 /Key input interrupt input circuit block diagram
INT2
/Key input interrupt control register
Interrupt control register
P64/INT2
P57/KI3
P56/KI2
P54/KI0
INT2
/Key input
interrupt request
Key input interrupt selection bit
(Address 7F16)
When the key input interrupt is
selected, it is necessary to
select the edge sense which
uses falling edge.
Pull–up
transistor
Port P5 pull-up
selection bit
Port P57 direction
register
0
1
Pull–up
transistor
Pull–up
transistor
Pull–up
transistor
Port P6 pull-up
selection bit 1
Port P64 direction register
1
0
Port P6 pull-up
selection bit 1
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37733MHL 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37733MHLXXXHP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37733S4 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:16-BIT CMOS MICROCOMPUTER
M37733S4BFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:16-BIT CMOS MICROCOMPUTER
M37733S4LHP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:16-BIT CMOS MICROCOMPUTER
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