3886 datasheet(126/380 Pages) RENESAS

126 / 380 page

3886 Group User’s Manual

APPLICATION

2-9

2.2 Interrupt

Fig. 2.2.3 Structure of Interrupt source selection register

Fig. 2.2.4 Structure of Interrupt edge selection register

Interrupt source selection register

b7b6b5b4b3b2b1b0

Function

At reset

Name

INT0/input buffer full interrupt

source selection bit

INT1/output buffer empty

interrupt source selection bit

0 : INT0 interrupt

1 : Input buffer full interrupt

INT2/I2C interrupt source

selection bit

CNTR1/key-on wake-up

interrupt source selection bit

0 : INT1 interrupt

1 : Output buffer empty interrupt

Serial I/O1 transmit/SCL,SDA

interrupt source selection bit

CNTR0/SCL,SDA interrupt

source selection bit

0 : Serial I/O1 transmit interrupt

1 : SCL,SDA interrupt

0 : CNTR0 interrupt

1 : SCL,SDA interrupt

Serial I/O2/I2C interrupt

source selection bit

0 : Serial I/O2 interrupt

1 : I2C interrupt

0 : INT2 interrupt

1 : I2C interrupt

0 : CNTR1 interrupt

1 : Key-on wake-up interrupt

AD converter/key-on wake-up

interrupt source selection bit

0 : A-D converter interrupt

1 : Key-on wake-up interrupt

✽1: Do not write “1” to these bits simultaneously.

✽2: Do not write “1” to these bits simultaneously.

✽3: Do not write “1” to these bits simultaneously.

Interrupt source selection register [INTSEL: address 003916]

✽1

✽2

✽3

✽1

Interrupt edge selection register

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Name

Interrupt edge selection register (INTEDGE) [Address : 3A16]

Nothing is allocated for these bits. These are write disabled bits.

When these bits are read out, the values are “0”.

INT0 interrupt edge

selection bit

INT1 interrupt edge

selection bit

0 : Falling edge active

1 : Rising edge active

0 : Falling edge active

1 : Rising edge active

INT3 interrupt edge

selection bit

INT2 interrupt edge

selection bit

0 : Falling edge active

1 : Rising edge active

0 : Falling edge active

1 : Rising edge active

Nothing is allocated for this bit. This is a write disabled bit.

When this bit is read out, the value is “0”.

INT4 interrupt edge

selection bit

0 : Falling edge active

1 : Rising edge active

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