NEC uPD78056Y User Manual

Page 491

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491

CHAPTER 21 INTERRUPT AND TEST FUNCTIONS

<7>

PPR6

Symbol

PR0L

<6>

PPR5

<5>

PPR4

<4>

PPR3

<3>

PPR2

<2>

PPR1

<1>

PPR0

<0>

TMPR4

Address

FFE8H

FFH

After

Reset

R/W

R/W

0

1

Priority Level Selection

High priority level

Low priority level

<7>

TMPR01

PR0H

<6>

TMPR00

<5>

TMPR3

<4>

STPR

<3>

SRPR

<2>

SERPR

<1>

CSIPR1

<0>

CSIPR0

7

1

PR1L

6

1

5

1

4

1

3

1

<2>

ADPR

<1>

TMPR2

<0>

TMPR1

FFE9H

FFH

R/W

FFEAH

FFH

R/W

Ч Ч

PR

×

Cautions 1. If a watchdog timer is used in watchdog timer mode 1, set TMPR4 flag to 1.

2. Set always 1 in PR1L bits 3 through 7.

(3) Priority specify flag registers (PR0L, PR0H, and PR1L)

The priority specify flag is used to set the corresponding maskable interrupt priority orders.

PR0L, PR0H, and PR1L are set with a 1-bit or 8-bit memory manipulation instruction. If PR0L and PR0H are

used as a 16-bit register PR0, use a 16-bit memory manipulation instruction for the setting.

RESET input sets these registers to FFH.

Figure 21-4. Priority Specify Flag Register Format

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