參數(shù)資料
型號(hào)： M306H3MC-XXXFP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP116
封裝： 20 X 20 MM, 0.65 MM PITCH, PLASTIC, LQFP-116
文件頁數(shù)： 106/135頁
文件大小： 2583K
代理商： M306H3MC-XXXFP
Rev.1.00
2004.03.23
page 72 of 320
M306H3MC-XXXFP/FCFP
Interrupt control circuit
KUPIC register
Key input interrupt
request
KI3
KI2
KI1
KI0
PUR2 register's PU25 bit
PD10 register's
PD10_7 bit
Pull-up
transistor
PD10 register's PD10_7 bit
PD10 register's
PD10_6 bit
PD10 register's
PD10_5 bit
PD10 register's
PD10_4 bit
Pull-up
transistor
Pull-up
transistor
Pull-up
transistor
Figure 2.7.11. Key Input Interrupt
______
2.7.8 NMI Interrupt
_______
______
An NMI interrupt is generated when input on the NMI pin changes state from high to low. The NMI
interrupt is a non-maskable interrupt.
_______
The input level of this NMI interrupt input pin can be read by accessing the P8 register’s P8_5 bit.
This pin cannot be used as an input port.
2.7.9 Key Input Interrupt
Of P104 to P107, a key input interrupt is generated when input on any of the P104 to P107 pins which has
had the PD10 register’s PD10_4 to PD10_7 bits set to “0” (= input) goes low. Key input interrupts can be
used as a key-on wakeup function, the function which gets the microcomputer out of wait or stop mode.
However, if you intend to use the key input interrupt, do not use P104 to P107 as analog input ports.
Figure 2.7.11 shows the block diagram of the key input interrupt. Note, however, that while input on any
pin which has had the PD10_4 to PD10_7 bits set to “0” (= input mode) is pulled low, inputs on all other
pins of the port are not detected as interrupts.
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