T89C51CC01 Atmel, T89C51CC01 Datasheet - Page 142
T89C51CC01
Manufacturer Part Number
T89C51CC01
Description
Enhanced 8-Bit Microcontroller
Manufacturer
Atmel
Datasheet
1.T89C51CC01.pdf
(170 pages)
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Registers
142
T89C51CC01
Table 115. IEN0 Register
IEN0 (S:A8h)
Interrupt Enable Register
Reset Value = 0000 0000b
bit addressable
Number
EA
Bit
7
7
6
5
4
3
2
1
0
Mnemonic Description
EX1
EX0
EC
Bit
ET2
ET1
ET0
EA
EC
ES
6
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.
PCA Interrupt Enable
Clear to disable the PCA interrupt.
Set to enable the PCA interrupt.
Timer 2 Overflow Interrupt Enable bit
Clear to disable Timer 2 overflow interrupt.
Set to enable Timer 2 overflow interrupt.
Serial Port Enable bit
Clear to disable serial port interrupt.
Set to enable serial port interrupt.
Timer 1 Overflow Interrupt Enable bit
Clear to disable timer 1 overflow interrupt.
Set to enable timer 1 overflow interrupt.
External Interrupt 1 Enable bit
Clear to disable external interrupt 1.
Set to enable external interrupt 1.
Timer 0 Overflow Interrupt Enable bit
Clear to disable timer 0 overflow interrupt.
Set to enable timer 0 overflow interrupt.
External Interrupt 0 Enable bit
Clear to disable external interrupt 0.
Set to enable external interrupt 0.
ET2
5
ES
4
ET1
3
EX1
2
ET0
1
4129K–CAN–01/05
EX0
0
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