AT89C51CC02CA-TDSUM ATMEL [ATMEL Corporation], AT89C51CC02CA-TDSUM Datasheet - Page 134
AT89C51CC02CA-TDSUM
Manufacturer Part Number
AT89C51CC02CA-TDSUM
Description
Enhanced 8-bit Microcontroller with CAN Controller and Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89C51CC02CA-TDSUM.pdf
(156 pages)
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Registers
134
AT/T89C51CC02
Figure 57. 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
ET2
ET1
EX1
ET0
EX0
EC
Bit
EC
EA
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
4126J–CAN–05/06
EX0
0
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