Rainbow-electronics T89C51CC02 Bedienungsanleitung PDF herunterladen (Seite 125)

Rev.A - May 17, 2001 125

Preliminary

T89C51CC02

IPL0 (S:B8h)

Interrupt Enable Register

Reset Value: X000 0000b

bit addressable

Figure 129. IPL0 Register

7 6 5 4 3 2 1 0

- PPC PT2 PS PT1 PX1 PT0 PX0

Bit Number Bit Mnemonic Description

Reserved

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

6 PPC

EWC Counter Interrupt Priority bit

Refer to PPCH for priority level

5 PT2

Timer 2 overflow interrupt Priority bit

Refer to PT2H for priority level.

4PS

Serial port Priority bit

Refer to PSH for priority level.

3 PT1

Timer 1 overflow interrupt Priority bit

Refer to PT1H for priority level.

2 PX1

External interrupt 1 Priority bit

Refer to PX1H for priority level.

1 PT0

Timer 0 overflow interrupt Priority bit

Refer to PT0H for priority level.

0 PX0

External interrupt 0 Priority bit

Refer to PX0H for priority level.

1 2 ... 120 121 122 123 124 125 126 127 128 129 130 ... 136 137

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Rainbow-electronics T89C51CC02 Bedienungsanleitung Seite 125