DS07-16303-3E Datasheet, PDF (53/97 Pages) Fujitsu Component Limited. – 32-bit RISC Microcontroller CMOS FR30 Series

MB91121
10. External Interrupt/NMI Control Block
The external interrupt/NMI control block controls external interrupt request signals input to NMI pin and INT0 to
INT3 pins.
Detecting levels can be selected from “H”, “L”, rising edge and falling edge (not for NMI pin) .
• Block diagram
Interrupt
request
8
Interrupt enable register
9
Gate
Cause F/F
5
Edge detection circuit
8
Interrupt cause register
8
Request level setting register
INT0 to INT7
NMI
• Register configuration
Address
bit 15
bit 8
00000095H
00000094H
EIRR
00000099H
ELVR
( ) : Access
R/W : Readable and writable
ENIR
Initial value
bit 0
0 0 0 0 0 0 0 0B (R/W)
0 0 0 0 0 0 0 0B (R/W)
0 0 0 0 0 0 0 0B (R/W)
53