ML620Q503/Q504 User's Manual
Chapter 5 Interrupts
FEUL620Q504 5–53
5.3.2 Maskable Interrupt Processing
When an interrupt is generated with the MIE flag set to "1", the following processing is executed by hardware
and the processing of program shifts to the interrupt destination.
(1)
Transfer the program counter (PC) to ELR1
(2)
Transfer CSR to ECSR1
(3)
Transfer PSW to EPSW1
(4)
Set the MIE flag to "0"
(5)
Set the ELEVEL field to"1"
(6)
Load the interrupt start address into PC
5.3.3 Non-Maskable Interrupt Processing
When an interrupt is generated regardless of the state of MIE flag, the following processing is performed by
hardware and the processing of program shifts to the interrupt destination.
(1)
Transfer PC to ELR2
(2)
Transfer CSR to ECSR2
(3)
Transfer PSW to EPSW2
(4)
Set the ELEVEL field to"2"
(5)
Load the interrupt start address into PC
5.3.4 Software Interrupt Processing
A software interrupt is generated as required within an application program. When the SWI instruction is
performed within the program, a software interrupt is generated, the following processing is performed by
hardware, and the processing program shifts to the interrupt destination. The vector table is specified by the SWI
instruction.
(1)
Transfer PC to ELR1
(2)
Transfer CSR to ECSR1
(3)
Transfer PSW to EPSW1
(4)
Set the MIE flag to "0"
(5)
Set the ELEVEL field to"1"
(6)
Load the interrupt start address into PC
[Reference]
For the MIE flag, Program Counter (PC), CSR, PSW, and ELEVEL, see "nX-U16/100 Core Instruction
Manual".
Summary of Contents for LAPIS SEMICONDUCTOR ML620Q503
Page 2: ...ML620Q503 Q504 User s Manual Issue Date Apr 16 2015 FEUL620Q504 01...
Page 18: ...Chapter 1 Overview...
Page 32: ...Chapter 2 CPU and Memory Space...
Page 44: ...Chapter 3 Reset Function...
Page 50: ...Chapter 4 Power Management...
Page 70: ...Chapter 5 Interrupts...
Page 134: ...Chapter 6 Clock Generation Circuit...
Page 161: ...Chapter 7 Time Base Counter...
Page 170: ...Chapter 8 Timers...
Page 183: ...Chapter 9 Function Timer FTM...
Page 231: ...Chapter 10 Watchdog Timer...
Page 239: ...Chapter 11 Synchronous Serial Port SSIO...
Page 251: ...Chapter 12 Synchronous Serial Port with FIFO SSIOF...
Page 283: ...Chapter 13 UART...
Page 303: ...Chapter 14 UART with FIFO UARTF...
Page 327: ...Chapter 15 I2 C Bus Interface...
Page 344: ...Chapter 16 Port XT...
Page 350: ...Chapter 17 Port 0...
Page 361: ...Chapter 18 Port 1...
Page 368: ...Chapter 19 Port2...
Page 379: ...Chapter 20 Port 3...
Page 395: ...Chapter 21 Port 4...
Page 410: ...Chapter 22 Port 5...
Page 426: ...Chapter 23 Melody Driver...
Page 439: ...Chapter 24 RC Oscillation type A D Converter RC ADC...
Page 462: ...Chapter 25 Successive Approximation Type A D Converter SA ADC...
Page 479: ...Chapter 26 Analog Comparator...
Page 489: ...Chapter 27 Flash Memory Control...
Page 505: ...Chapter 28 Voltage Level Supervisor VLS...
Page 517: ...Chapter 29 LLD circuit...
Page 519: ...Chapter 30 On Chip Debug Function...
Page 522: ...Appendixes...
Page 552: ...Revision History...