r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 158

• 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
11. Interrupts
11.1
Figure 11.1
Table 11.1
11.1.1
Non-maskable interrupts
Maskable interrupts
Interrupts
Interrupts are classified as either non-maskable or maskable interrupts. These differ in whether or not the interrupt
can be enabled or disabled by the interrupt enable flag (I flag) in the FLG register and in whether or not the
interrupt priority level can be changed as listed in Table 11.1.
Figure 11.1 shows the Types of Interrupts.
Overview
Types of Interrupts
Notes:
Software
(non-maskable interrupts)
Hardware
1. Peripheral function interrupts are generated by the peripheral functions in the MCU.
2. For the voltage monitor 1 or voltage monitor 2 interrupt, non-maskable or maskable
3. Do not use this interrupt. It is provided exclusively for use in development tools.
Preliminary document
Specifications in this document are tentative and subject to change.
Maskable/Non-Maskable Interrupts
Types of Interrupts
can be selected by bits IRQ1SEL and IRQ2SEL in the CMPA register.
Enabling or Disabling Interrupts by
Interrupt Enable Flag (I Flag)
Peripheral function
(maskable interrupts)
Special
(non-maskable interrupts)
Not possible
Possible
(1)
Undefined instruction (UND instruction)
Overflow (INTO instruction)
BRK instruction
INT instruction
Watchdog timer
Oscillation stop detection
Voltage monitor 1
Voltage monitor 2
Single-step
Address break
Address match
Changing Priority by Setting Interrupt
(3)
(3)
Priority Level
Not possible
(2)
(2)
Possible
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11. Interrupts