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CHAPTER 18 INTERRUPT FUNCTIONS AND TEST FUNCTION
454
(3) Priority specify flag registers (PR0L, PR0H)
The priority specify flag is used to set the corresponding maskable interrupt priority orders.
PR0L and PR0H are set with a 1-bit or 8-bit memory manipulation instruction. When PR0L and PR0H are used
together as a 16-bit register PR0, they are set with a 16-bit memory manipulation instruction.
RESET input sets these registers to FFH.
Figure 18-4. Priority Specify Flag Register Format
Symbol
<7>
<6>
<5>
<4>
<3>
<2>
<1>
<0>
Address
When Reset
R/W
PR0L
TMPR3 CSIPR1 CSIPR0 PPR3
PPR2
PPR1
PPR0 TMPR4
FFE8H
FFH
R/W
7
6
5
4
<3>
<2>
<1>
<0>
PR0H
1
1
1
1
ADPR TMPR2 TMPR1 TMPR0
FFE9H
FFH
R/W
××
PR
Priority Level Selection
0
High priority level
1
Low priority level
Cautions
1. When a watchdog timer is used in the watchdog timer mode 1, set the TMPR4 flag to 1.
2. Be sure to set bits 4 to 7 of PR0H to 1.
Содержание 78014Y Series
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