r5f3650kcnfb Renesas Electronics Corporation., r5f3650kcnfb Datasheet - Page 26

• Manufacturer Part Number: r5f3650kcnfb
• Description: M16c/65c Group Renesas Mcu
• Manufacturer: Renesas Electronics Corporation.

M16C/65C Group
R01DS0015EJ0100 Rev.1.00
Feb 07, 2011
2.8.7
2.8.8
2.8.9
2.8.10
The I flag enables maskable interrupts.
Maskable interrupts are disabled when the I flag is 0, and enabled when it is 1. The I flag becomes 0
when an interrupt request is accepted.
ISP is selected when the U flag is 0. USP is selected when the U flag is 1.
The U flag becomes 0 when a hardware interrupt request is accepted, or the INT instruction of software
interrupt number 0 to 31 is executed.
IPL is 3 bits wide and assigns processor interrupt priority levels from 0 to 7.
If a requested interrupt has higher priority than IPL, the interrupt request is enabled.
Only set these bits to 0. The read value is undefined.
Interrupt Enable Flag (I Flag)
Stack Pointer Select Flag (U Flag)
Processor Interrupt Priority Level (IPL)
Reserved Areas
2. Central Processing Unit (CPU)
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