NEC switch User Manual

User’s Manual  U12978EJ3V0UD

Type of Interrupt Priority

Interrupt Source

Name

Trigger

Nonmaskable

-

INTWDT

Watchdog timer overflow (when

watchdog timer mode 1 is selected)

Internal

0004H

(A)

Maskable

0

INTWDT

Watchdog timer overflow (when

interval timer mode is selected)

(B)

1

INTUSBTM

USB timer overflow

0006H

(B)

2

INTUSBRT

EOP detection when a USB token

packet is received

0008H

3

INTUSBRD

EOP detection when a USB

data/handshake packet is received

000AH

4

INTUSBST

EOP detection when a USB data/

handshake packet is transmitted

000CH

5

INTUSBRE

Detection of transition from J state

to K state or SE0 on the USB bus

000EH

6

INTP0

Detection of a pin input edge

External

0010H

(C)

7

INTCSI10

End of three-wire SIO bus interface

transmission and reception

Internal

0012H

(B)

8

INTTM00

Generation of the 8-bit timer 00

match signal

0014H

9

INTTM01

Generation of the 8-bit timer/event

counter 01 match signal

0016H

10

INTKR00

Detection of the key return signal

External

0018H

(C)

Notes 1. The priority is the order of priority when multiple maskable interrupts are generated simultaneously.  0

is the highest priority and 10 is the lowest.

2. Types (A) to (C) in the basic configuration correspond to (A) to (C) in Figure 11-1, respectively.

Only one of the two watchdog timer interrupt (INTWDT) sources, non-maskable or maskable (internal),

can be selected.

Internal/

External

Vector

Table

Address

Basic

Configuration

Type