M32C80 Datasheet, PDF (103/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/80 Group
10. Interrupts
10.3 Hardware Interrupts
Special interrupts and peripheral function interrupts are available as hardware interrupts.
10.3.1 Special Interrupts
Special interrupts are non-maskable interrupts.
______
10.3.1.1 NMI Interrupt
______
______
The NMI interrupt occurs when a signal applied to the NMI pin changes from a high-level ("H") signal
______
to a low-level ("L") signal. Refer to 10.8 NMI Interrupt for details.
10.3.1.2 Watchdog Timer Interrupt
The watchdog timer interrupt occurs when a count source of the watchdog timer underflows. Refer to
11. Watchdog Timer for details.
10.3.1.3 Oscillation Stop Detection Interrupt
The oscillation stop detection interrupt occurs when the microcomputer detects a main clock oscilla-
tion stop. Refer to 8. Clock Generation Circuit for details.
10.3.1.4 Single-Step Interrupt
Do not use the single-step interrupt. For development support tool only.
10.3.1.5 Address Match Interrupt
The address match interrupt occurs immediately before executing an instruction that is stored into an
address indicated by the RMADi register (i=0 to 7) when the AIERi bit in the AIER register is set to "1"
(address match interrupt enabled). Set the starting address of the instruction in the RMADi register.
The address match interrupt does not occur when a table data or addresses of the instruction other
than the starting address, if the instruction has multiple addresses, is set. Refer to 10.10 Address
Match Interrupt for details.
10.3.2 Peripheral Function Interrupt
The peripheral function interrupt occurs when a request from the peripheral functions in the microcom-
puter is acknowledged. The peripheral function interrupts and software interrupt numbers 8 to 48 for
the INT instruction use the same interrupt vector table. The peripheral function interrupt is a maskable
interrupt.
See Table 10.2 about how the peripheral function interrupt occurs. Refer to the descriptions of each
function for details.
Rev. 1.00 Nov. 01, 2005 Page 84 of 330
REJ09B0271-0100