AT89C51RB2-RLTCM ATMEL [ATMEL Corporation], AT89C51RB2-RLTCM Datasheet - Page 55
AT89C51RB2-RLTCM
Manufacturer Part Number
AT89C51RB2-RLTCM
Description
8-bit Microcontroller with 16K/ 32K Bytes Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89C51RB2-RLTCM.pdf
(125 pages)
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4180B–8051–04/03
Table 44. IENO Register
IEN0 - Interrupt Enable Register (A8h)
Reset Value = 0000 0000b
Bit addressable
Number
EA
Bit
7
7
6
5
4
3
2
1
0
Mnemonic Description
EC
ET2
ET1
EX1
ET0
EX0
Bit
EA
EC
ES
6
Enable All Interrupt Bit
Cleared to disable all interrupts.
Set to enable all interrupts.
PCA Interrupt Enable Bit
Cleared to disable.
Set to enable.
Timer 2 Overflow Interrupt Enable Bit
Cleared to disable timer 2 overflow interrupt.
Set to enable timer 2 overflow interrupt.
Serial Port Enable Bit
Cleared to disable serial port interrupt.
Set to enable serial port interrupt.
Timer 1 Overflow Interrupt Enable Bit
Cleared to disable timer 1 overflow interrupt.
Set to enable timer 1 overflow interrupt.
External Interrupt 1 Enable Bit
Cleared to disable external interrupt 1.
Set to enable external interrupt 1.
Timer 0 Overflow Interrupt Enable Bit
Cleared to disable timer 0 overflow interrupt.
Set to enable timer 0 overflow interrupt.
External Interrupt 0 Enable Bit
Cleared to disable external interrupt 0.
Set to enable external interrupt 0.
ET2
5
ES
4
ET1
3
AT89C51RB2/RC2
EX1
2
ET0
1
EX0
0
55
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