CHAPTER 16 INTERRUPT FUNCTIONS
Preliminary User’s Manual U16315EJ1V0UD
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(3) Priority specification flag registers (PR0L, PR0H, PR1L)
The priority specification flag registers are used to set the corresponding maskable interrupt priority order.
PR0L, PR0H, and PR1L are set by a 1-bit or 8-bit memory manipulation instruction. If PR0L and PR0H are
combined to form 16-bit register PR0, they are set by a 16-bit memory manipulation instruction.
RESET input sets these registers to FFH.
Figure 16-4. Format of Priority Specification Flag Registers (PR0L, PR0H, PR1L)
Address: FFE8H After reset: FFH R/W
Symbol
7
6
5
4
3
2
1
0
PR0L
SREPR6
PPR5
PPR4
PPR3
PPR2
PPR1
PPR0
LVIPR
Address: FFE9H After reset: FFH R/W
Symbol
7
6
5
4
3
2
1
0
PR0H
TMPR010
TMPR000
TMPR50
TMPRH0
TMPRH1
DUALPRO
STPR6
SRPR6
Address: FFEAH After reset: FFH R/W
Symbol
7
6
5
4
3
2
1
0
PR1L
1
Note
PPR6
WTPR
KRPR
TMPR51
WTIPR
SRPR0
ADPR
XXPRX
Priority level selection
0
High priority level
1
Low priority level
Note
Be sure to set bit 7 of PR1L to 1.