Registers Controlling Interrupt Functions - NEC 78K0R/KE3 User Manual

16-bit single-chip microcontrollers

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15.3 Registers Controlling Interrupt Functions

The following 6 types of registers are used to control the interrupt functions.

• Interrupt request flag registers (IF0L, IF0H, IF1L, IF1H, IF2L, IF2H)

• Interrupt mask flag registers (MK0L, MK0H, MK1L, MK1H, MK2L, MK2H)

• Priority specification flag registers (PR00L, PR00H, PR01L, PR01H, PR02L, PR02H, PR10L, PR10H, PR11L,

PR11H, PR12L, PR12H)

• External interrupt rising edge enable registers (EGP0, EGP1)

• External interrupt falling edge enable registers (EGN0, EGN1)

• Program status word (PSW)

Table 15-2 shows a list of interrupt request flags, interrupt mask flags, and priority specification flags corresponding

to interrupt request sources.

Table 15-2. Flags Corresponding to Interrupt Request Sources (1/2)

Note Do not use UART0 and CSI00 at the same time because they share flags for the interrupt request sources.

If one of the interrupt sources INTST0 and INTCSI00 is generated, bit 5 of IF1H is set to 1. Bit 5 of MK0H,

PR00H, and PR10H supports these three interrupt sources.

CHAPTER 15 INTERRUPT FUNCTIONS

Interrupt Request Flag

User's Manual U17854EJ9V0UD

Interrupt Mask Flag

Priority Specification Flag

WDTIPR0, WDTIPR1

LVIPR0, LVIPR1

PPR00, PPR10

PPR01, PPR11

PPR02, PPR12

PPR03, PPR13

PPR04, PPR14

PPR05, PPR15

STPR03, STPR13

SRPR03, SRPR13

SREPR03, SREPR13

DMAPR00, DMAPR10

DMAPR01, DMAPR11

STPR00, STPR10

CSIPR000, CSIPR100

SRPR00, SRPR10

SREPR00, SREPR10