r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 45

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
2.8.7
2.8.8
2.8.9
2.8.10
The I flag enables maskable interrupts. Interrupts are disabled when the I flag is 0, and are enabled when the I
flag is 1. The I flag is set to 0 when an interrupt request is acknowledged.
ISP is selected when the U flag is 0. USP is selected when the U flag is 1. The U flag is set to 0 when a hardware
interrupt request is acknowledged or the INT instruction for a software interrupt numbered from 0 to 31 is
executed.
IPL is 3 bits wide and assigns eight processor interrupt priority levels from 0 to 7. If a requested interrupt has
higher priority than IPL, the interrupt is enabled.
The write value must be 0. The read value 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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