NEC 78K0/KD1 Series User Manual page 331

(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
Symbol 7
PR0L SREPR6
Address: FFE9H After reset: FFH
Symbol 7
PR0H TMPR010
Address: FFEAH After reset: FFH
Symbol 7
Note
PR1L 1
XXPRX
0
1
Note Be sure to set bit 7 of PR1L to 1.
CHAPTER 16 INTERRUPT FUNCTIONS
R/W
6 5
PPR5 PPR4 PPR3
R/W
6 5
TMPR000 TMPR50 TMPRH0
R/W
6 5
PPR6 WTPR KRPR
High priority level
Low priority level
Preliminary User's Manual U16315EJ1V0UD
4 3 2
PPR2 PPR1
4 3 2
TMPRH1 DUALPRO
4 3 2
TMPR51 WTIPR
Priority level selection
1 0
PPR0 LVIPR
1 0
STPR6 SRPR6
1 0
SRPR0 ADPR
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