AT83C51RB2-3CSCM データシートの表示（PDF） - Atmel Corporation
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AT83C51RB2-3CSCM Datasheet PDF : 83 Pages
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Table 33. IEO Register
IE0 - Interrupt Enable Register (A8h)
7
6
5
4
EA
EC
ET2
ES
3
2
1
0
ET1
EX1
ET0
EX0
Bit
Number
7
6
5
4
3
2
1
0
Bit
Mnemonic Description
Enable All interrupt bit
EA Cleared to disable all interrupts.
Set to enable all interrupts.
PCA interrupt enable bit
EC Cleared to disable.
Set to enable.
Timer 2 overflow interrupt enable bit
ET2 Cleared to disable Timer 2 overflow interrupt.
Set to enable Timer 2 overflow interrupt.
Serial port enable bit
ES Cleared to disable serial port interrupt.
Set to enable serial port interrupt.
Timer 1 overflow interrupt enable bit
ET1 Cleared to disable timer 1 overflow interrupt.
Set to enable timer 1 overflow interrupt.
External interrupt 1 enable bit
EX1 Cleared to disable external interrupt 1.
Set to enable external interrupt 1.
Timer 0 overflow interrupt enable bit
ET0 Cleared to disable timer 0 overflow interrupt.
Set to enable timer 0 overflow interrupt.
External interrupt 0 enable bit
EX0 Cleared to disable external interrupt 0.
Set to enable external interrupt 0.
Reset Value = 0000 0000b
Bit addressable
48 AT80C51RD2/AT83C51Rx2
4113B–8051–03/05
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