UPD784938 Datasheet, PDF (526/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 23 INTERRUPT FUNCTIONS
23.1 Interrupt Request Sources
The µPD784938 has the 29 interrupt request sources shown in Table 23-2, with a vector table allocated to each.
Table 23-2. Interrupt Request Sources (1/2)
Type of
Interrupt
Request
Default
Priority
Interrupt Request
Generating Source
Software
None BRK instruction execution
BRKCS instruction execution
Generating
Unit
Interrupt
Control
Register
Name
Context
Switching
—
—
Not
possible possible
—
—
Possible
Macro
Service
Not
Not
Macro
Service
Control
Word
Address
—
Vector
Table
Address
3EH
—
—
Operand
None Invalid operand in MOV STBC,
—
error
#byte instruction or MOV WDM,
#byte instruction, and LOCATION
instruction
—
Not
Not
—
possible possible
Non-
maskable
None
NMI (pin input edge detection)
Edge
detection
—
Not
Not
—
possible possible
INTWDT (watchdog timer
overflow)
Watchdog
—
Not
Not
—
timer
possible possible
3CH
2H
4H
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Preliminary User’s Manual U13987EJ1V0UM00