r5f21368xkfp Renesas Electronics Corporation., r5f21368xkfp Datasheet - Page 22

• Manufacturer Part Number: r5f21368xkfp
• Description: R8c/36w Group, R8c/36x Group, R8c/36y Group, R8c/36z Group Renesas Mcu
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36W Group, R8C/36X Group, R8C/36Y Group, R8C/36Z Group
REJ03B0315-0010 Rev.0.10
May 17, 2010
2.8.7
2.8.8
2.8.9
2.8.10
The I flag enables maskable interrupts.
Interrupt are disabled when the I flag is set to 0, and are enabled when the I flag is set to 1. The I flag is set to 0
when an interrupt request is acknowledged.
ISP is selected when the U flag is set to 0; USP is selected when the U flag is set to 1.
The U flag is set to 0 when a hardware interrupt request is acknowledged or the INT instruction of software
interrupt numbers 0 to 31 is executed.
IPL is 3 bits wide and assigns processor interrupt priority levels from level 0 to level 7.
If a requested interrupt has higher priority than IPL, the interrupt is enabled.
If necessary, set to 0. When read, the content is undefined.
Interrupt Enable Flag (I)
Stack Pointer Select Flag (U)
Processor Interrupt Priority Level (IPL)
Reserved Bit
Preliminary document
Specifications in this document are tentative and subject to change.
2. Central Processing Unit (CPU)
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