AT89C51RC2-3CSCM(2003) 데이터 시트보기 (PDF) - Atmel Corporation

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AT89C51RC2-3CSCM
(Rev.:2003)

8-bit Microcontroller with 16K/32K Bytes Flash

Atmel Corporation 

Table 45. IPL0 Register

IPL0 - Interrupt Priority Register (B8h)

7

6

5

4

-

PPCL

PT2L

PSL

3

PT1L

2

PX1L

1

PT0L

Bit

Number

7

Bit

Mnemonic Description

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

6

PPCL

PCA Interrupt Priority Bit

see PPCH for priority level.

5

PT2L

Timer 2 Overflow Interrupt Priority Bit

see PT2H for priority level.

4

PSL

Serial Port Priority Bit

see PSH for priority level.

3

PT1L

Timer 1 Overflow Interrupt Priority Bit

see PT1H for priority level.

2

PX1L

External Interrupt 1 Priority Bit

see PX1H for priority level.

1

PT0L

Timer 0 Overflow Interrupt Priority Bit

see PT0H for priority level.

0

PX0L

External Interrupt 0 Priority Bit

see PX0H for priority level.

Reset Value = X000 0000b

Bit addressable

0

PX0L

56 AT89C51RB2/RC2

4180B–8051–04/03

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