Rainbow-electronics T89C51CC01 Manual do Utilizador descarregar pdf (Página 129)

129

T89C51CC01

Rev. D – 17-Dec-01

Table 91. IPL0 Register

IPL0 (S:B8h)

Interrupt Enable Register

Reset Value: X000 0000b

bit addressable

76543210

- 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

PCA Interrupt Priority bit

Refer to PPCH for priority level

5PT2

Timer 2 overflow interrupt Priority bit

Refer to PT2H for priority level.

4PS

Serial port Priority bit

RefertoPSHforprioritylevel.

3PT1

Timer 1 overflow interrupt Priority bit

Refer to PT1H for priority level.

2PX1

External interrupt 1 Priority bit

Refer to PX1H for priority level.

1PT0

Timer 0 overflow interrupt Priority bit

Refer to PT0H for priority level.

0PX0

External interrupt 0 Priority bit

Refer to PX0H for priority level.

1 2 ... 124 125 126 127 128 129 130 131 132 133 134 ... 148 149

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Rainbow-electronics T89C51CC01 Manual do Utilizador Página 129