h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 96

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

5.2
Table 5.1 summarizes the pins of the interrupt controller.
Table 5.1
5.3
The interrupt controller has the following registers. For details on the system control register
(SYSCR), see section 3.2.2, System Control Register (SYSCR), and for details on the IRQ sense
port select register (ISSR), see section 8.11.2, IRQ Sense Port Select Register (ISSR).
• Interrupt control registers A to C (ICRA to ICRC)
• Address break control register (ABRKCR)
• Break address registers A to C (PBARA to PBARC)
• IRQ sense control registers H, L (ISCRH, ISCRL)
• IRQ enable register (IER)
• IRQ status register (ISR)
5.3.1
The ICR registers set interrupt control levels for interrupts other than NMI.
The correspondence between interrupt sources and ICRA to ICRC settings is shown in table 5.2.
Note: n: A to C
Rev. 2.00, 03/04, page 64 of 534
Symbol
NMI
IRQ7 to IRQ0
Bit
7 to 0
Bit Name
ICRn7 to
IRCn0
Input/Output Pins
Register Descriptions
Interrupt Control Registers A to C (ICRA to ICRC)
Pin Configuration
Initial
Value
All 0
I/O
Input
Input
R/W
R/W
Nonmaskable external interrupt
Rising edge or falling edge can be selected
Maskable external interrupts
Rising edge, falling edge, or both edges, or level sensing, can
be selected individually for each pin. Whether the IRQn
interrupt is input from the IRQn or (IRQn) is selectable.
(n = 7 to 0)
Function
Description
Interrupt Control Level
0: Corresponding interrupt source is interrupt control
1: Corresponding interrupt source is interrupt control
level 0 (no priority)
level 1 (priority)