M16CSLASH62P datasheet(91/349 Pages) MITSUBISHI

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Mitsubishi microcomputers

M16C / 62P Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Interrupts

Under

development

Preliminary Specifications Rev.1.0

Specifications in this manual are tentative and subject to change.

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 1.11.11. Key Input Interrupt

______

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.

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

1.11.11 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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