AT83C5121 datasheet(49/115 Pages) ATMEL

49 / 115 page

A/T8xC5121

4164G–SCR–07/06

Table 32. IE0 Register

Reset Value = 0XX0 0000b

Bit addressable

ET1

EX1

ET0

EX0

Bit

Number

Bit

Mnemonic

Description

7EA

Enable All interrupt bit

Clear to disable all interrupts.

Set to enable all interrupts.

If EA = 1, each interrupt source is individually enabled or disabled by setting or

clearing its interrupt enable bit.

Reserved

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

Reserved

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

4ES

Serial port Enable bit

Clear to disable serial port interrupt.

Set to enable serial port interrupt.

3ET1

Timer 1 overflow interrupt Enable bit

Clear to disable Timer 1 overflow interrupt.

Set to enable Timer 1 overflow interrupt.

EX1

External interrupt 1 Enable bit

Clear to disable external interrupt 1.

Set to enable external interrupt 1.

1ET0

Timer 0 overflow interrupt Enable bit

Clear to disable Timer 0 overflow interrupt.

Set to enable Timer 0 overflow interrupt.

EX0

External interrupt 0 Enable bit

Clear to disable external interrupt 0.

Set to enable external interrupt 0.

AT83C5121 Datasheet(PDF) 49 Page - ATMEL Corporation

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