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M32C/86 数据表(PDF) 138 Page - Renesas Technology Corp

部件名 M32C/86
功能描述  RENESAS 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES
PDF  505 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

M32C/86 数据表(HTML) 138 Page - Renesas Technology Corp

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Page 115
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11. Interrupts
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Interrupt Control
Circuit
KUPIC Register
Key Input Interrupt
Request
P107/KI3
P106/KI2
P105/KI1
P104/KI0
PU31 Bit in the
PUR3 Register
PD10_7 Bit
Pull-up
Transistor
PD10_7 Bit
PD10_6 Bit
PD10_5 Bit
PD10_4 Bit
Pull-up
Transistor
Pull-up
Transistor
Pull-up
Transistor
PSC_7 Bit
______
11.8 NMI Interrupt(1)
______
______
The NMI interrupt occurs when a signal applied to the NMI pin changes from a high-level ("H") signal to a
______
______
low-level ("L") signal. The NMI interrupt is a non-maskable interrupt. Although the P85/NMI pin is used as
______
the NMI interrupt input pin, the P8_5 bit in the P8 register indicates the input level for this pin.
NOTES:
______
______
______
1. When the NMI interrupt is not used, connect the NMI pin to VCC via a resistor. Because the NMI
interrupt cannot be ignored, the pin must be connected.
11.9 Key Input Interrupt
Key input interrupt request is generated when one of the signals applied to the P104 to P107 pins in input
mode is on the falling edge. The key input interrupt can be also used as key-on wake-up function to exit wait
or stop mode. To use the key input interrupt, do not use P104 to P107 as A/D input ports. Figure 11.11
shows a block diagram of the key input interrupt. When an "L" signal is applied to any pins in input mode,
signals applied to other pins are not detected as an interrupt request signal.
When the PSC_7 bit in the PSC register(2) is set to "1" (key input interrupt disabled), no key input interrupt
occurs regardless of interrupt control register settings. When the PSC_7 bit is set to "1", no input from a
port pin is available even when in input mode.
NOTES:
2. Refer to 24. Programmable I/O Ports about the PSC register.
Figure 11.11 Key Input Interrupt



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