HD6432646 Hitachi, HD6432646 Datasheet - Page 136

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

5.1.2
A block diagram of the interrupt controller is shown in Figure 5-1.
102
Internal interrupt
request
SWDTEND to
RM0
Legend
ISCR
IER
ISR
IPR
SYSCR
NMI input
IRQ input
SYSCR
Block Diagram
: IRQ sense control register
: IRQ enable register
: IRQ status register
: Interrupt priority register
: System control register
Interrupt controller
Figure 5-1 Block Diagram of Interrupt Controller
INTM1 INTM0
NMIEG
ISCR
NMI input unit
IRQ input unit
ISR
IER
determination
Priority
IPR
Interrupt
request
Vector
number
I2 to I0
I
CPU
CCR
EXR