DS07-16301-4E Datasheet, PDF (54/99 Pages) Fujitsu Component Limited. – 32-bit RISC Microcontroller CMOS FR30 Series

MB91101/MB91101A
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 INT3
NMI
• Register configuration
Address _{bit 15}
00000095H
00000094H
00000099H
EIRR
bit 8
( ) :Access
R/W :Readable and writable
bit 0
ENIR
ELVR
Initial value
00000000 B (R/W)
00000000 B (R/W)
00000000 B (R/W)
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