Renesas RL78/G15 User Manual

RL78/G15 CHAPTER 14 INTERRUPT FUNCTIONS
R01UH0959EJ0110 Rev.1.10 Page 618 of 765
Mar 7, 2023
Table 14-5. Relationship between Interrupt Requests Enabled for Multiple Interrupt Servicing during Interrupt Servicing
Multiple Interrupt Request
Interrupt Being Serviced
Maskable Interrupt Request
Software
Interrupt
Request
Priority Level 0
(PR = 00)
Priority Level 1
(PR = 01)
Priority Level 2
(PR = 10)
Priority Level 3
(PR = 11)
IE = 1 IE = 0 IE = 1 IE = 0 IE = 1 IE = 0 IE = 1 IE = 0
Maskable interrupt ISP1 = 0
ISP0 = 0
 × × × × × × × 
ISP1 = 0
ISP0 = 1
 ×  × × × × × 
ISP1 = 1
ISP0 = 0
 ×  ×  × × × 
ISP1 = 1
ISP0 = 1
 ×  ×  ×  × 
Software interrupt  ×  ×  ×  × 
Remark 1. : Multiple interrupt servicing enabled
Remark 2. ×: Multiple interrupt servicing disabled
Remark 3. ISP0, ISP1, and IE are flags contained in the PSW.
ISP1 = 0, ISP0 = 0: An interrupt of level 1 or level 0 is being serviced.
ISP1 = 0, ISP0 = 1: An interrupt of level 2 is being serviced.
ISP1 = 1, ISP0 = 0: An interrupt of level 3 is being serviced.
ISP1 = 1, ISP0 = 1: Wait for an interrupt acknowledgment (all interrupts are enabled).
IE = 0: Interrupt request acknowledgment is disabled.
IE = 1: Interrupt request acknowledgment is enabled.
Remark 4. PR is a flag contained in the PR00L, PR00H, PR01L, PR01H, PR10L, PR10H, PR11L, and PR11H
registers.
PR = 00: Specify level 0 with xxPR1x = 0, xxPR0x = 0 (higher priority level)
PR = 01: Specify level 1 with xxPR1x = 0, xxPR0x = 1
PR = 10: Specify level 2 with xxPR1x = 1, xxPR0x = 0
PR = 11: Specify level 3 with xxPR1x = 1, xxPR0x = 1 (lower priority level)

Renesas RL78/G15 Specifications

General

Brand	Renesas
Model	RL78/G15
Category	Microcontrollers
Language	English