Rainbow-electronics T89C51AC2 Manuel d'utilisateur télécharger pdf (Page 86)

T89C51AC2

Rev. B – 19-Dec-01

17. Interrupt System The controller has a total of 8 interrupt vectors: two external interrupts (INT0 and INT1),

three timer interrupts (timers 0, 1 and 2), a serial port interrupt, a PCA, a timer overrun

interrupt and an ADC. These interrupts are shown below.

Figure 40. Interrupt Control System

EX0

IEN0.0

External

Interrupt 0

INT0#

EX1

IEN0.2

External

Interrupt 1

INT1#

ET0

IEN0.1

Timer 0

IEN0.6

PCA

ET1

IEN0.3

Timer 1

IEN0.4

UART

EADC

IEN1.1

AtoD

Converter

Interrupt Enable Lowest Priority Interrupts

Highest

Priority Enable

Priority

Interrupts

AIN1:0

Timer 2

ET2

IEN0.5

TxD

RxD

CEX0:5

1 2 ... 81 82 83 84 85 86 87 88 89 90 91 ... 109 110

T89C51AC2 1

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