M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 74

• Manufacturer Part Number: M37702E6BFS
• Description: EPROM MCU/8BIT CMOS EMULATION CH
• Manufacturer: Renesas Electronics America

Specifications of M37702E6BFS

• Accessory Type: Emulator EPROM MCU
• For Use With/related Products: 7702
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

interrupt request exists or not is checked, in the case of the interrupt disable flag (I) = “0” (interrupts
enabled); they are accepted in order of priority levels, with the highest priority interrupt request accepted
first.
except software interrupts (zero division and BRK instruction interrupts) and the watchdog timer interrupt.
Use the interrupt priority level select bits to set their priority levels. Additionally, the reset, which is handled
as one that has the highest priority of all interrupts, and the watchdog timer interrupt have their priority levels
set by hardware. Figure 4.4.1 shows the interrupt priority levels set by hardware.
a branch is certain to be made to the interrupt routine.
INTERRUPTS
4.4 Interrupt priority level
4.4 Interrupt priority level
When two or more interrupt requests are detected at the same sampling timing, at which whether an
Among a total of 19 interrupt sources, the user can set the desired priority levels for 16 interrupt sources
Note that software interrupts are not affected by interrupt priority levels. Whenever the instruction is executed,
Fig. 4.4.1 Interrupt priority levels set by hardware
4–10
Priority levels determined by hardware
Low
Reset
Watchdog
timer
The user can set the desired priority levels inside of the dotted line.
7702/7703 Group User’s Manual
Priority level
16 interrupt sources except software interrupts
and watchdog timer interrupt
••••••••••••••••••
High