HD643303x Hitachi, HD643303x Datasheet - Page 92

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

5.1.3 Pin Configuration
Table 5-1 lists the interrupt pins.
Table 5-1 Interrupt Pins
Name
Nonmaskable interrupt
External interrupt request 4 to 0 IRQ
5.1.4 Register Configuration
Table 5-2 lists the registers of the interrupt controller.
Table 5-2 Interrupt Controller Registers
Address
H'FFF2
H'FFF4
H'FFF5
H'FFF6
H'FFF8
H'FFF9
Notes: 1. Lower 16 bits of the address.
2. Only 0 can be written, to clear flags.
*1
Name
System control register
IRQ sense control register
IRQ enable register
IRQ status register
Interrupt priority register A
Interrupt priority register B
Abbreviation
NMI
4
to IRQ
0
77
I/O
Input
Input
Abbreviation
SYSCR
ISCR
IER
ISR
IPRA
IPRB
Function
Nonmaskable interrupt, rising edge or
falling edge selectable
Maskable interrupts, falling edge or
level sensing selectable
R/W
R/W
R/W
R/W
R/(W)
R/W
R/W
*2
Initial Value
H'0B
H'00
H'00
H'00
H'00
H'00