Rainbow-electronics AT89C5122 Manual do Utilizador descarregar pdf (Página 162)

162

AT8xC5122/23

4202E–SCR–06/06

Registers

Reset Value = 0000 0000b (Bit addressable)

Table 98. Interrupt Enable Register 0 - IEN0 (A8h)

76543210

EA - - ES ET1 EX1 ET0 EX0

Bit

Number

Bit

Mnemonic Description

7EA

Enable All interrupt bit

Cleared to disable all interrupts.

Set to enable all interrupts.

6 - 5 -

Reserved

The value read from this bit is indeterminate. Do not change these bits.

4ES

Serial port Enable bit

Cleared to disable serial port interrupt.

Set to enable serial port interrupt.

3ET1

Timer 1 overflow interrupt Enable bit

Cleared to disable timer 1 overflow interrupt.

Set to enable timer 1 overflow interrupt.

2 EX1

External interrupt 1 Enable bit

Cleared to disable external interrupt 1.

Set to enable external interrupt 1.

1ET0

Timer 0 overflow interrupt Enable bit

Cleared to disable timer 0 overflow interrupt.

Set to enable timer 0 overflow interrupt.

0 EX0

External interrupt 0 Enable bit

Cleared to disable external interrupt 0.

Set to enable external interrupt 0.

1 2 ... 157 158 159 160 161 162 163 164 165 166 167 ... 212 213

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