r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 374

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

10. Interrupt Controller (INTC)
10.7.2
When the IRQ/IRL[7:0] pin functions are switched, the INTC may retain an incorrectly detected
interrupt request. Therefore, mask the IRL and IRQ interrupt requests before switching the
IRQ/IRL[7:0] pin functions.
Table 10.17 Switching Sequence of IRQ/IRL[7:0] Pin Function
Rev.1.00 Jan. 10, 2008 Page 344 of 1658
REJ09B0261-0100
Sequence Item
1
2
3
4
Notes on Setting IRQ/IRL[7:0] Pin Function
IRL interrupt request and IRQ interrupt
request masking
Setting IRL/IRQ[7:4] pins to IRL7 to IRL4
Setting IRQ/IRL[7:0] pins to IRL or IRQ
Start of IRL and IRQ interrupt detection
Procedure
Write 1 to all bits in INTMSK0 and
INTMSK1 except reserved bits
Write 0 to the PMSEL14 bit in PMSELR
Write 0 to the PL4MD1, PL4MD0,
PL3MD1, PL3MD0, PL2MD1, PL2MD0,
PL1MD1, PL1MD0 bits in PLCR
Set bits IRLM1 to IRLM0 in ICR0
Write 1 to the corresponding bit in
INTMSKCLR0 and INTMSKCLR1