UPD703003 datasheet(18/82 Pages) NEC

18 / 82 page

µPD703003

Data Sheet U12261EJ2V1DS00

6. INTERRUPT/EXCEPTION HANDLING FUNCTIONS

The features of the interrupt/exception handling functions are shown below.

• Interrupts

• Nonmaskable interrupt: 1 source

• Maskable interrupt: 32 sources

• 8-level programmable priority control

• Multiple interrupt control based on priority levels

• Mask specification for each maskable interrupt request

• Noise elimination, edge detection, and valid edge specification for external interrupt requests

• Exceptions

• Software exceptions: 32 sources

• Exception trap: 1 source (invalid instruction code exception)

The configuration of the interrupt/exception handling functions is shown below.

Figure 6-1. Block Diagram of Maskable Interrupt

RPU

INTM1

INTM2

INTM3

INTM4

SIO

INTCSI0

INTOV11

Internal bus

XXMKn (interrupt mask flag)

ISPR

Handler

address

generator

CPU

PSW

Interrupt

request

Interrupt

request

acknowledge

HALT mode

release signal

OVIF11

OVIF12

OVIF13

OVIF14

P11IF0

P11IF1

P11IF2

P11IF3

P12IF0

P12IF1

P12IF2

P12IF3

P13IF0

P13IF1

P13IF2

P13IF3

P14IF0

P14IF1

P14IF2

P14IF3

CSIF0

CSIF1

CSIF2

CSIF3

SEIF0

SRIF0

STIF0

SEIF1

SRIF1

STIF1

ADIF

CMIF4

INTOV12

INTOV13

INTOV14

INTP110/INTCC110

INTP111/INTCC111

INTP112/INTCC112

INTP113/INTCC113

INTP120/INTCC120

INTP121/INTCC121

INTP122/INTCC122

INTP123/INTCC123

INTP130/INTCC130

INTP131/INTCC131

INTP132/INTCC132

INTP133/INTCC133

INTP140/INTCC140

INTP141/INTCC141

INTP142/INTCC142

INTP143/INTCC143

INTCM4

INTAD

INTCSI1

INTCSI2

INTCSI3

INTSER0

INTSR0

INTST0

INTSER1

INTSR1

INTST1

A/D converter

INTP110

INTP111

INTP112

INTP113

INTP120

INTP121

INTP122

INTP123

INTP130

INTP131

INTP132

INTP133

INTP140

INTP141

INTP142

INTP143

XX: Name of peripheral unit (OV, P11 to P14, CM, CS, SE, SR, ST, AD)

n: Peripheral unit number (if none exists, then 0 to 4 or 11 to 14)

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