AT89C51RC2-3CSIM datasheet(57/127 Pages) ATMEL

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AT89C51RB2/RC2

4180C–8051–12/03

Table 44. IENO Register

IEN0 - Interrupt Enable Register (A8h)

Reset Value = 0000 0000b

Bit addressable

ET2

ET1

EX1

ET0

EX0

Bit

Number

Bit

Mnemonic

Description

7EA

Enable All Interrupt Bit

Cleared to disable all interrupts.

Set to enable all interrupts.

6EC

PCA Interrupt Enable Bit

Cleared to disable.

Set to enable.

5ET2

Timer 2 Overflow Interrupt Enable Bit

Cleared to disable timer 2 overflow interrupt.

Set to enable timer 2 overflow interrupt.

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.

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.

EX0

External Interrupt 0 Enable Bit

Cleared to disable external interrupt 0.

Set to enable external interrupt 0.

AT89C51RC2-3CSIM Datasheet(PDF) 57 Page - ATMEL Corporation

AT89C51RC2-3CSIM Datasheet(HTML) 57 Page - ATMEL Corporation

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